subject:(Spin current)

University of South Carolina

1. Lu, Ning. Non-local Spin Valve Interferometer: Experimental Observation of Superconducting Spin Current and Spin Aharonov-Bohm Effect.

Degree: PhD, Physics and Astronomy, 2019, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/5265

► An electron interferometer was designed and fabricated via a normal metal (supercon- ductor)/insulator/ferromagnet non-local lateral spin valve with a ring-shaped normal metal/insulator spacer, and… (more)

▼ An electron interferometer was designed and fabricated via a normal metal (supercon- ductor)/insulator/ferromagnet non-local lateral spin valve with a ring-shaped normal metal/insulator spacer, and spin current interference was observed. At 4.2 K, a very high spin signal of 200 mΩ was found in a device with 2 µm injector-detector dis- tance and magnetic field swept parallel to the plane. With a perpendicular magnetic field sweep, a Hanle effect measurement showed both spin precession and h/e oscil- lation. Because of the non-adiabatic nature of the precessing spins at low fields as they traverse the normal metal ring, this is an experimental observation of Aharonov- Anandan’s non-adiabatic geometric phase. In addition, our observation of identical spin resistance for normal and supercon- ducting Aluminum is inconsistent with theoretical predictions based on the quasi- particle picture. In this designed sample, at the injector region, it is actually a superconductor/ferromagnet/superconductor lateral Josephson junction. Such a lateral Josephson junction convert spin singlet Cooper pairs from Aluminum to the long range triplet components in ferromagnet with projection of Sz = ±1. Such long range triplet components could diffuse a long distance in ferromagnet bar which is shorter than 3µm. The spin current results in superconducting Aluminum not only suggested the singlet-triplet conversion in ferromagnet, but may also suggest a new phenomenon, that is the long range triplet correlation in ferromagnet may also re- versely spread out into type I superconductor and exist for a short period of time in the superconductor and finally convert to singlet correlation due to exchange inter- action and spin-orbital coupling. Such an unstable triplet correlation in Aluminum could be detected in the non-local geometry. Although additional experimental work is needed to further confirm this supposition, our results might be the direct observa- tion of superconducting spin current which was under experimental pursuit recently. The experimental results may also suggest a new research area, that is triplet-singlet conversion in type I superconductor. Advisors/Committee Members: Scott Crittenden.

Subjects/Keywords: Physics; Spin Current; superconductor; Spin Aharonov-Bohm; Spin Valve; electron interferometer

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APA (6^th Edition):

Lu, N. (2019). Non-local Spin Valve Interferometer: Experimental Observation of Superconducting Spin Current and Spin Aharonov-Bohm Effect. (Doctoral Dissertation). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/5265

Chicago Manual of Style (16^th Edition):

Lu, Ning. “Non-local Spin Valve Interferometer: Experimental Observation of Superconducting Spin Current and Spin Aharonov-Bohm Effect.” 2019. Doctoral Dissertation, University of South Carolina. Accessed April 12, 2021. https://scholarcommons.sc.edu/etd/5265.

MLA Handbook (7^th Edition):

Lu, Ning. “Non-local Spin Valve Interferometer: Experimental Observation of Superconducting Spin Current and Spin Aharonov-Bohm Effect.” 2019. Web. 12 Apr 2021.

Vancouver:

Lu N. Non-local Spin Valve Interferometer: Experimental Observation of Superconducting Spin Current and Spin Aharonov-Bohm Effect. [Internet] [Doctoral dissertation]. University of South Carolina; 2019. [cited 2021 Apr 12]. Available from: https://scholarcommons.sc.edu/etd/5265.

Council of Science Editors:

Lu N. Non-local Spin Valve Interferometer: Experimental Observation of Superconducting Spin Current and Spin Aharonov-Bohm Effect. [Doctoral Dissertation]. University of South Carolina; 2019. Available from: https://scholarcommons.sc.edu/etd/5265

University of Cambridge

2. Zadvorna, Olga. Spin pumping measurements at interfaces between magnetic metal or insulator and organic semiconductors.

Degree: 2020, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/315654

► Over the last 16 years, organic spintronics has developed into a striving field with exciting reports of extremely long spin diffusion lengths and spin relaxation… (more)

Subjects/Keywords: spin pumping; ferromagnetic resonance; spin rectification; spin current

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APA (6^th Edition):

Zadvorna, O. (2020). Spin pumping measurements at interfaces between magnetic metal or insulator and organic semiconductors. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/315654

Chicago Manual of Style (16^th Edition):

Zadvorna, Olga. “Spin pumping measurements at interfaces between magnetic metal or insulator and organic semiconductors.” 2020. Doctoral Dissertation, University of Cambridge. Accessed April 12, 2021. https://www.repository.cam.ac.uk/handle/1810/315654.

MLA Handbook (7^th Edition):

Zadvorna, Olga. “Spin pumping measurements at interfaces between magnetic metal or insulator and organic semiconductors.” 2020. Web. 12 Apr 2021.

Vancouver:

Zadvorna O. Spin pumping measurements at interfaces between magnetic metal or insulator and organic semiconductors. [Internet] [Doctoral dissertation]. University of Cambridge; 2020. [cited 2021 Apr 12]. Available from: https://www.repository.cam.ac.uk/handle/1810/315654.

Council of Science Editors:

Zadvorna O. Spin pumping measurements at interfaces between magnetic metal or insulator and organic semiconductors. [Doctoral Dissertation]. University of Cambridge; 2020. Available from: https://www.repository.cam.ac.uk/handle/1810/315654

University of Delaware

3. Kandaz, Fatih. Anisotropic spin relaxation in mesoscopic nonmagnetic channels.

Degree: PhD, University of Delaware, Department of Physics and Astronomy, 2018, University of Delaware

URL: http://udspace.udel.edu/handle/19716/23597

► Spin–orbit (SO) effects, which are essential for spintronics, not only generate spin currents and spin torques but also provide ways to modulate spin currents. However,… (more)

Subjects/Keywords: Pure sciences; Applied sciences; Magnetism; Spin current; Spin polarization; Spin relaxation; Spin-orbit coupling; Spintronics

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APA (6^th Edition):

Kandaz, F. (2018). Anisotropic spin relaxation in mesoscopic nonmagnetic channels. (Doctoral Dissertation). University of Delaware. Retrieved from http://udspace.udel.edu/handle/19716/23597

Chicago Manual of Style (16^th Edition):

Kandaz, Fatih. “Anisotropic spin relaxation in mesoscopic nonmagnetic channels.” 2018. Doctoral Dissertation, University of Delaware. Accessed April 12, 2021. http://udspace.udel.edu/handle/19716/23597.

MLA Handbook (7^th Edition):

Kandaz, Fatih. “Anisotropic spin relaxation in mesoscopic nonmagnetic channels.” 2018. Web. 12 Apr 2021.

Vancouver:

Kandaz F. Anisotropic spin relaxation in mesoscopic nonmagnetic channels. [Internet] [Doctoral dissertation]. University of Delaware; 2018. [cited 2021 Apr 12]. Available from: http://udspace.udel.edu/handle/19716/23597.

Council of Science Editors:

Kandaz F. Anisotropic spin relaxation in mesoscopic nonmagnetic channels. [Doctoral Dissertation]. University of Delaware; 2018. Available from: http://udspace.udel.edu/handle/19716/23597

University of Exeter

4. Spicer, Timothy Michael. Excitation of picosecond magnetisation dynamics by spin transfer torque.

Degree: PhD, 2018, University of Exeter

URL: http://hdl.handle.net/10871/34684

► This thesis presents the results from investigations of ultrafast magnetisation dynamics driven by pure spin currents. Spin orbit coupling in heavy metal layers - such… (more)

▼ This thesis presents the results from investigations of ultrafast magnetisation dynamics driven by pure spin currents. Spin orbit coupling in heavy metal layers - such as tungsten, tantalum or platinum - allows for the generation of pure spin currents, whereby spin up and spin down electrons move in opposite directions. Hence, a flow of angular momentum can be controlled through the manipulation of charge current through a heavy metal layer. When a spin current is injected into a ferromagnet, a torque is exerted on its magnetisation, with the potential to induce a wide variety of ultrafast dynamics. The experimental investigation of these phenomena employed a variety of high-frequency electrical techniques and time-resolved scanning Kerr microscopy (TRSKM) methods. In addition, various simulative and analytical approaches were used to gain insight into the underlying mechanisms. Spin Hall nano-oscillators (SHNOs) have recently been shown to support a tunable GHz spin wave `bullet’ under injection of direct current (DC), making it an exciting candidate for microwave communication applications. This thesis will show how TRKSM can be used to measure the torques within these devices, revealing that radio frequency (RF) current does not possess the same distribution as the DC. The competition between self-inductance and focusing within the device geometry results in a modified distribution of spin current. Further TRSKM measurements show the modified torque landscape to promote the mobility of the `bullet' within the magnetic layer. Devices that exploit spin currents for magnetisation reversal have received interest from academia and industry for their potential use as memory elements. The perpendicular magnetic anisotropy present in Ta/CoFeB/MgO leads to lower write currents and higher thermal stability. However, ultrafast processes have not been previously observed in such devices. TRSKM measurements of Hall bar devices were compared with a macrospin model to understand the underlying torques, and to investigate the conditions required to promote switching. Square elements built from the same stack structure exhibited contrasting static and dynamic behaviour. Pulsed currents drove differing dynamics at the edge and center of the device, while enabling the realignment of magnetic domains. The domains themselves could be driven directly by the spin current leading to domain wall dynamics. Measurements with a bipolar electrical pulse demonstrated that meta-stable switching can be achieved in micron-scale elements.

Subjects/Keywords: 500; Spintronics; Magnetism; Dynamics; Spin Current

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APA (6^th Edition):

Spicer, T. M. (2018). Excitation of picosecond magnetisation dynamics by spin transfer torque. (Doctoral Dissertation). University of Exeter. Retrieved from http://hdl.handle.net/10871/34684

Chicago Manual of Style (16^th Edition):

Spicer, Timothy Michael. “Excitation of picosecond magnetisation dynamics by spin transfer torque.” 2018. Doctoral Dissertation, University of Exeter. Accessed April 12, 2021. http://hdl.handle.net/10871/34684.

MLA Handbook (7^th Edition):

Spicer, Timothy Michael. “Excitation of picosecond magnetisation dynamics by spin transfer torque.” 2018. Web. 12 Apr 2021.

Vancouver:

Spicer TM. Excitation of picosecond magnetisation dynamics by spin transfer torque. [Internet] [Doctoral dissertation]. University of Exeter; 2018. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10871/34684.

Council of Science Editors:

Spicer TM. Excitation of picosecond magnetisation dynamics by spin transfer torque. [Doctoral Dissertation]. University of Exeter; 2018. Available from: http://hdl.handle.net/10871/34684

NSYSU

5. Li, Jian-Huang. Calculations of conserved spin current in two dimensional k-linear spin-orbit coupled semiconductor.

Degree: Master, Physics, 2013, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629113-162357

► In the two dimensional systems, we investigate the conserved spin current response to an electric field for the generic k-linear spin-orbit coupled semiconductors at zero… (more)

Subjects/Keywords: conserved spin current; spin-Hall conductivity; k-linear spin-orbit coupled; longitudinal spin conductivity; spin-Hall effect

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APA (6^th Edition):

Li, J. (2013). Calculations of conserved spin current in two dimensional k-linear spin-orbit coupled semiconductor. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629113-162357

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Jian-Huang. “Calculations of conserved spin current in two dimensional k-linear spin-orbit coupled semiconductor.” 2013. Thesis, NSYSU. Accessed April 12, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629113-162357.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Jian-Huang. “Calculations of conserved spin current in two dimensional k-linear spin-orbit coupled semiconductor.” 2013. Web. 12 Apr 2021.

Vancouver:

Li J. Calculations of conserved spin current in two dimensional k-linear spin-orbit coupled semiconductor. [Internet] [Thesis]. NSYSU; 2013. [cited 2021 Apr 12]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629113-162357.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li J. Calculations of conserved spin current in two dimensional k-linear spin-orbit coupled semiconductor. [Thesis]. NSYSU; 2013. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629113-162357

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – Riverside

6. Turkyilmaz, Serol. A Study on Spin Current Absorption Through a Transparent Ferro Magnet Junction on Graphene.

Degree: Electrical Engineering, 2016, University of California – Riverside

URL: http://www.escholarship.org/uc/item/3bc2h4zc

► This dissertation consists of 3 different research projects and the first major part is devoted to exploring the spin absorption effect through a transparent Ferro… (more)

▼ This dissertation consists of 3 different research projects and the first major part is devoted to exploring the spin absorption effect through a transparent Ferro magnet junction on graphene and second major part investigates an advanced nanofabrication technique: multiple angle deposition for the realization of spin transfer torque in graphene lateral non-local spin valve devices in which pure spin current can be produced. A small portion of this thesis is also devoted to the characterization of top gated transistors fabricated on CVD grown and exfoliated MoS2 film using HfO2 as a dielectric.Spin absorption is of current interest for the realization of current induced magnetization reversal of nano-scale magnets which is the key for future spin transfer torque devices. We studied spin absorption by a Permalloy nanomagnet grown on top of a lateral graphene spin valve channel. A pure spin current is injected into a graphene channel via electrical spin injection through a Co/Al2O3 tunnel barrier junction. The Permalloy island in between the injector and the detector is expected to modulate the spin population at the detector via spin absorption. Depending on the magnetization of the Py island, the spin current can be absorbed differently resulting in a distinct signature of non-local magnetoresistance (MR) from the Py island magnetization and hence a modulation of the spin population. We attribute this effect to a combination of both transverse and longitudinal spin current absorptions which is caused by the micro domain formations within the Perm alloy island and hence a hysteretic behavior in the MR signal. This hysteretic behavior can be due to the magnetization rotation of micro domains which raise the discussion of both lateral and longitudinal spin absorption. It is very important to investigate the anisotropy of the island and correlate the result to the non-local MR measurement. To this end, magnetic force microscopy of the island is needed in order to further confirm the observed non local signal in our devices. This new effect is still being investigated and further studies are underway to unravel the origin of this new effect observed in graphene spin valves.

Subjects/Keywords: Electrical engineering; Lateral graphene spin valve; Nanofabrication; Spin current absorption; Spintronics

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APA (6^th Edition):

Turkyilmaz, S. (2016). A Study on Spin Current Absorption Through a Transparent Ferro Magnet Junction on Graphene. (Thesis). University of California – Riverside. Retrieved from http://www.escholarship.org/uc/item/3bc2h4zc

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Turkyilmaz, Serol. “A Study on Spin Current Absorption Through a Transparent Ferro Magnet Junction on Graphene.” 2016. Thesis, University of California – Riverside. Accessed April 12, 2021. http://www.escholarship.org/uc/item/3bc2h4zc.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Turkyilmaz, Serol. “A Study on Spin Current Absorption Through a Transparent Ferro Magnet Junction on Graphene.” 2016. Web. 12 Apr 2021.

Vancouver:

Turkyilmaz S. A Study on Spin Current Absorption Through a Transparent Ferro Magnet Junction on Graphene. [Internet] [Thesis]. University of California – Riverside; 2016. [cited 2021 Apr 12]. Available from: http://www.escholarship.org/uc/item/3bc2h4zc.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Turkyilmaz S. A Study on Spin Current Absorption Through a Transparent Ferro Magnet Junction on Graphene. [Thesis]. University of California – Riverside; 2016. Available from: http://www.escholarship.org/uc/item/3bc2h4zc

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

7. An, Kyongmo. Control of spin waves using charge and heat flows.

Degree: PhD, Physics, 2016, University of Texas – Austin

URL: http://dx.doi.org/10.26153/tsw/10193

► The manipulation and propagation of spin degree of freedom have been extensively studied for last decades, and the relevant field of research is named spintronics.… (more)

Subjects/Keywords: Spin waves; Spintronics; Magnetism; Brillouin light scattering; Spin current

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APA (6^th Edition):

An, K. (2016). Control of spin waves using charge and heat flows. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/10193

Chicago Manual of Style (16^th Edition):

An, Kyongmo. “Control of spin waves using charge and heat flows.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed April 12, 2021. http://dx.doi.org/10.26153/tsw/10193.

MLA Handbook (7^th Edition):

An, Kyongmo. “Control of spin waves using charge and heat flows.” 2016. Web. 12 Apr 2021.

Vancouver:

An K. Control of spin waves using charge and heat flows. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Apr 12]. Available from: http://dx.doi.org/10.26153/tsw/10193.

Council of Science Editors:

An K. Control of spin waves using charge and heat flows. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://dx.doi.org/10.26153/tsw/10193

King Abdullah University of Science and Technology

8. Wen, Yan. Spin Current Detection and Current Induced Magnetic Moment Switching in Magnetic Multilayers.

Degree: Physical Science and Engineering (PSE) Division, 2020, King Abdullah University of Science and Technology

URL: http://hdl.handle.net/10754/664132

► In the past two decades, the interest in materials with strong spin-orbit coupling has attracted substantial attention because of the novel physical mechanisms they display… (more)

Subjects/Keywords: spin current; spin-orbit torque; magnetism; antiferromagnets; tunnel magnetoresistance

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APA (6^th Edition):

Wen, Y. (2020). Spin Current Detection and Current Induced Magnetic Moment Switching in Magnetic Multilayers. (Thesis). King Abdullah University of Science and Technology. Retrieved from http://hdl.handle.net/10754/664132

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wen, Yan. “Spin Current Detection and Current Induced Magnetic Moment Switching in Magnetic Multilayers.” 2020. Thesis, King Abdullah University of Science and Technology. Accessed April 12, 2021. http://hdl.handle.net/10754/664132.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wen, Yan. “Spin Current Detection and Current Induced Magnetic Moment Switching in Magnetic Multilayers.” 2020. Web. 12 Apr 2021.

Vancouver:

Wen Y. Spin Current Detection and Current Induced Magnetic Moment Switching in Magnetic Multilayers. [Internet] [Thesis]. King Abdullah University of Science and Technology; 2020. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10754/664132.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wen Y. Spin Current Detection and Current Induced Magnetic Moment Switching in Magnetic Multilayers. [Thesis]. King Abdullah University of Science and Technology; 2020. Available from: http://hdl.handle.net/10754/664132

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

9. HONG, SIN-YANG. The effect of Platinum thickness and annealing on spinâSeebeck voltage in Pt/Ni79Fe21 structure.

Degree: Master, Physics, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629115-220353

► Platinum thickness dependence and annealing effect of the longitudinal spin-Seebeck voltage has been investigated in platinum/ Ni79Fe21 films, which has grown on sapphire substrate. In… (more)

Subjects/Keywords: Platinum; Permalloy; annealing; spin current; Anomalous Nernst effect; spin Seebeck effect; Inverse spin Hall effect

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APA (6^th Edition):

HONG, S. (2015). The effect of Platinum thickness and annealing on spinâSeebeck voltage in Pt/Ni79Fe21 structure. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629115-220353

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

HONG, SIN-YANG. “The effect of Platinum thickness and annealing on spinâSeebeck voltage in Pt/Ni79Fe21 structure.” 2015. Thesis, NSYSU. Accessed April 12, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629115-220353.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

HONG, SIN-YANG. “The effect of Platinum thickness and annealing on spinâSeebeck voltage in Pt/Ni79Fe21 structure.” 2015. Web. 12 Apr 2021.

Vancouver:

HONG S. The effect of Platinum thickness and annealing on spinâSeebeck voltage in Pt/Ni79Fe21 structure. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Apr 12]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629115-220353.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

HONG S. The effect of Platinum thickness and annealing on spinâSeebeck voltage in Pt/Ni79Fe21 structure. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629115-220353

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Rortais, Fabien. Etude de l'injection et détection de spin dans le silicium et germanium : d'une mesure locale de l'accumulation à la détection non locale du courant de spin : A Study of spin injection and detection in silicon and germanium : from the local measurement of spin accumulation to the non-local detection of spin currents.

Degree: Docteur es, Nanophysique, 2016, Université Grenoble Alpes (ComUE)

URL: http://www.theses.fr/2016GREAY059

► Depuis la découverte de la magnétorésistance (MR) géante en 1988 par le groupe d'Albert Fert (prix Nobel de physique en 2007), le domaine de l'électronique… (more)

▼ Depuis la découverte de la magnétorésistance (MR) géante en 1988 par le groupe d'Albert Fert (prix Nobel de physique en 2007), le domaine de l'électronique de spin a connu un essor sans précédent, justifié par toutes les applications qu'elle permet d'envisager en électronique.Depuis une vingtaine d'années, il est question d'utiliser le degré de liberté de spin directement dans les matériaux semi-conducteurs avec le gros avantage par rapport aux métaux de pouvoir manipuler électriquement le spin des porteurs. L'électronique de spin dans les matériaux semi-conducteurs utilise pour coder l'information non seulement la charge des porteurs (électrons et trous), mais aussi leur spin. En associant charge et spin, on ajoute de nouvelles fonctionnalités aux dispositifs de micro-électronique traditionnels.Le premier challenge consiste à contrôler l’injection et la détection d’une population de porteurs polarisés en spin dans les semi-conducteurs traditionnels (Si, Ge).Pour cela, nous avons étudié des dispositifs hybrides de type MIS: Métal ferromagnétique/Isolant/Semi-conducteur qui nous permettent d'injecter et de détecter électriquement un courant de spin. La première partie de cette thèse concerne les dispositifs à 3 terminaux sur différents substrats qui utilisent une unique électrode ferromagnétique pour injecter et détecter par effet Hanle l’accumulation de spin dans les semi-conducteurs. Une amplification des signaux de spin extraits expérimentalement par rapport aux valeurs théoriques du modèle diffusif est à l’origine d’une controverse importante. Nous avons alors démontré que l’origine du signal de MR ou de l’amplification ne peut être expliquée par la présence de défauts dans la barrière tunnel. A l’inverse, nous prouvons la présence d’états d’interface qui peuvent expliquer l’amplification du signal de spin. De plus, la réduction de la densité d’états d’interface par une préparation de surface montre des changements significatifs comme la diminution du signal de spin.La deuxième partie de ces travaux concerne la transition vers les vannes de spin latérales sur semi-conducteurs. Dans ces dispositifs utilisant deux électrodes FM, le découplage entre l’injection et la détection de spin permet de s’affranchir des effets de magnétorésistance parasites car seul un pur courant de spin est détecté dans le semi-conducteur. Par une croissance d’une jonction tunnel ferromagnétique épitaxiée, nous avons démontré l’injection de spin dans des substrats de silicium et germanium sur isolant. En particulier nous observons un fort signal de spin jusqu’à température ambiante dans le germanium.Finalement, les prémices de la manipulation de spin par l’étude du couplage spin-orbite ont été étudiées dans les substrats d’arséniure de gallium et de germanium. En effet, nous avons induit par effet Hall de spin (une conséquence du couplage spin-orbite) une accumulation de spin qui a été sondée en utilisant la spectroscopie de muon. On démontre alors, à basse température, la présence de l’accumulation grâce au couplage entre les spins… Advisors/Committee Members: Jamet, Matthieu (thesis director), Vergnaud, Céline (thesis director).

Subjects/Keywords: Spintronique; Semiconducteur; Sillicium; Spin valve; Manipulation de spin; Pur courant de spin; Spintronics; Semiconductors; Silicon; Spin valve; Spin manipulation; Pure spin current; 530

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APA (6^th Edition):

Rortais, F. (2016). Etude de l'injection et détection de spin dans le silicium et germanium : d'une mesure locale de l'accumulation à la détection non locale du courant de spin : A Study of spin injection and detection in silicon and germanium : from the local measurement of spin accumulation to the non-local detection of spin currents. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2016GREAY059

Chicago Manual of Style (16^th Edition):

Rortais, Fabien. “Etude de l'injection et détection de spin dans le silicium et germanium : d'une mesure locale de l'accumulation à la détection non locale du courant de spin : A Study of spin injection and detection in silicon and germanium : from the local measurement of spin accumulation to the non-local detection of spin currents.” 2016. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed April 12, 2021. http://www.theses.fr/2016GREAY059.

MLA Handbook (7^th Edition):

Rortais, Fabien. “Etude de l'injection et détection de spin dans le silicium et germanium : d'une mesure locale de l'accumulation à la détection non locale du courant de spin : A Study of spin injection and detection in silicon and germanium : from the local measurement of spin accumulation to the non-local detection of spin currents.” 2016. Web. 12 Apr 2021.

Vancouver:

Rortais F. Etude de l'injection et détection de spin dans le silicium et germanium : d'une mesure locale de l'accumulation à la détection non locale du courant de spin : A Study of spin injection and detection in silicon and germanium : from the local measurement of spin accumulation to the non-local detection of spin currents. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2016. [cited 2021 Apr 12]. Available from: http://www.theses.fr/2016GREAY059.

Council of Science Editors:

Rortais F. Etude de l'injection et détection de spin dans le silicium et germanium : d'une mesure locale de l'accumulation à la détection non locale du courant de spin : A Study of spin injection and detection in silicon and germanium : from the local measurement of spin accumulation to the non-local detection of spin currents. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2016. Available from: http://www.theses.fr/2016GREAY059

Cornell University

11. Ou, Yongxi. GENERATION OF SPIN CURRENT AND MANIPULATION OF MAGNETIC MOMENT IN MAGNETIC THIN FILM HETEROSTRUCTURES.

Degree: PhD, Physics, 2018, Cornell University

URL: http://hdl.handle.net/1813/59523

► In this thesis, I summarize my research on the generation of spin current via the spin Hall effect (SHE) in various material systems, the behaviors… (more)

▼ In this thesis, I summarize my research on the generation of spin current via the spin Hall effect (SHE) in various material systems, the behaviors of the spin-orbit torques (SOTs) which result from the injection of spin current into an adjacent ferromagnet (FM) in the thin film heterostructures under different interfacial and ambient conditions, the engineering of perpendicular magnetic anisotropy (PMA) at the FM/oxide interface, and how to use this effect together with the large SOTs to manipulate the magnetic moment in magnetic tunnel junctions (MTJs). Accordingly, the thesis consists of four sections for the experimental details regarding the above aspects. In the first study, I focused on the behavior of the SOTs generated in normal metal (NM)/FM/oxide heterostructures under different interfacial and ambient conditions. By varying the spin current sources and controlling the different interfaces, the strength of the SOTs can be efficiently modified, pointing out the physical origins and mechanism of the generation and transfer of these SOTs in the NM/FM/oxide heterostructures. In the second study, I explored the SHE in various material systems beyond conventional heavy metals. These material systems include antiferromagnetic alloys and ferromagnetic alloys near the magnetic transition temperatures. By employing spin torque ferromagnetic resonance and the harmonic response technique, I was able to quantify the strength of the SHE in those material systems under both room temperature and low temperature ambient conditions. In the third part, I explained the discovery and manipulation of the PMA at the FM/oxide interface by inserting an ultrathin metallic dusting layer. I demonstrated that with this dusting technique, the PMA can be greatly enhanced and efficiently modified by the types of the dusting material, the amount of that material, and the post-fabrication process involving the dusting layer. In the last part, I showed that by combing the strong SHE in the heavy metal tungsten (W) and the PMA effect from the dusting technique, MTJs with fast, reliable switching and low switching current can be realized in three-terminal nanoscale devices, demonstrating their great potential as a building block for the next generation memory storage elements. Advisors/Committee Members: Buhrman, Robert A. (chair), Mueller, Erich (committee member), Ralph, Daniel C. (committee member).

Subjects/Keywords: spin current; spin-orbit interaction; thin film heterostructure; Applied physics; Spintronics; Physics; Condensed matter physics; Spin Hall Effect; magnetic tunnel junction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ou, Y. (2018). GENERATION OF SPIN CURRENT AND MANIPULATION OF MAGNETIC MOMENT IN MAGNETIC THIN FILM HETEROSTRUCTURES. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/59523

Chicago Manual of Style (16^th Edition):

Ou, Yongxi. “GENERATION OF SPIN CURRENT AND MANIPULATION OF MAGNETIC MOMENT IN MAGNETIC THIN FILM HETEROSTRUCTURES.” 2018. Doctoral Dissertation, Cornell University. Accessed April 12, 2021. http://hdl.handle.net/1813/59523.

MLA Handbook (7^th Edition):

Ou, Yongxi. “GENERATION OF SPIN CURRENT AND MANIPULATION OF MAGNETIC MOMENT IN MAGNETIC THIN FILM HETEROSTRUCTURES.” 2018. Web. 12 Apr 2021.

Vancouver:

Ou Y. GENERATION OF SPIN CURRENT AND MANIPULATION OF MAGNETIC MOMENT IN MAGNETIC THIN FILM HETEROSTRUCTURES. [Internet] [Doctoral dissertation]. Cornell University; 2018. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/1813/59523.

Council of Science Editors:

Ou Y. GENERATION OF SPIN CURRENT AND MANIPULATION OF MAGNETIC MOMENT IN MAGNETIC THIN FILM HETEROSTRUCTURES. [Doctoral Dissertation]. Cornell University; 2018. Available from: http://hdl.handle.net/1813/59523

12. Barbedienne, Quentin. Étude d'états de surface topologiques en vue de leur intégration dans des dispositifs d'électronique de spin : Study of topological surface states for spintronic devices.

Degree: Docteur es, Physique, 2019, Université Paris-Saclay (ComUE)

URL: http://www.theses.fr/2019SACLS524

► La spintronique classique utilise généralement des matériaux magnétiques pour produire un courant de spin à partir d’un courant de charge. Un autre moyen, plus récemment… (more)

▼ La spintronique classique utilise généralement des matériaux magnétiques pour produire un courant de spin à partir d’un courant de charge. Un autre moyen, plus récemment étudié, consiste à utiliser le couplage spin-orbite (SOC). Il permet de produire un courant de spin pur selon une direction transverse au courant de charge en tenant compte des principes de la mécanique quantique relativiste. Dans les matériaux à fort couplage spin-orbite, les courants de spin ainsi produits sont suffisamment importants pour imaginer les utiliser pour la commutation magnétique dans les dispositifs spintroniques. Le couplage spin-orbite, correspondant à une correction relativiste dans les équations du mouvement de l’électron, particule de spin 1/2, peut être grand dans des matériaux contenant des atomes lourds. Cela signifie qu’une conversion du courant de charge en courant de spin peut être obtenue en utilisant les propriétés de systèmes à fort SOC tel que le platine (Pt), le tungstène (W) ou le tantale (Ta), par exemple. Depuis peu, des systèmes électroniques bidimensionnels (2DEG), obtenus au niveau d’interfaces ou de surfaces particulières, ont démontré des propriétés permettant des effets d’inter-conversion particulièrement efficaces. En particulier des états Rashba ou des systèmes d’isolants topologiques, suscitent actuellement un fort engouement dans la communauté de la spintronique pour cette faculté d’inter-conversion spin-charge.Dans ce cadre particulier, depuis une dizaine d’années, les isolants topologiques ont été étudiés pour leurs propriétés électroniques non conventionnelles qui prennent racine dans la définition théorique de l’effet Hall quantique entier donnée par Thouless, ainsi que dans les travaux de Haldane dans le graphène et de Kane dans des systèmes semi-conducteurs à faible bande interdite pourvus d’un SOC fort. Ces systèmes 2D présentent des propriétés électriques intrigantes : ils sont isolants en volume et conducteurs en surface. Ces états de conductions sont pourvus d’une dispersion linéaire en énergie en fonction du vecteur d’onde k, comme dans le cas du graphène, avec une hélicité en spin déterminée.De nombreuses questions restent néanmoins ouvertes quant à la compréhension des mécanismes à l’origine de ces états de conduction en surface, mais également quant à la manière la plus simple de détecter ces états topologiques. En vue de leur intégration dans des dispositifs spintroniques et de la réalisation d’interface TI/Matériaux ferromagnétiques un certain nombre de questions se posent : comment préserver la nature des états topologiques à l’interface ? Quels matériaux utiliser et quelle est la nature atomique de l’interface (diffusion atomique) ? Quels sont les échanges électroniques à l’interface ? Etc.L’une des applications utilisant les propriétés des isolants topologiques, est d’utiliser les propriétés de conversion du courant de charge en courant de spin (et vice versa) afin de modifier ou commuter l’aimantation d’un élément ou mémoire ferromagnétique déposé directement (ou séparé par une couche… Advisors/Committee Members: George, Jean-Marie (thesis director).

Subjects/Keywords: Isolants toplogiques; Spin orbite; Courant de spin; Couple de transfert de spin; Rashba; Magnéto-Transport; Topological insulators; Rashba interface state; Spin current; Spin transfert torque; Rashba; Magnetotransport

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Barbedienne, Q. (2019). Étude d'états de surface topologiques en vue de leur intégration dans des dispositifs d'électronique de spin : Study of topological surface states for spintronic devices. (Doctoral Dissertation). Université Paris-Saclay (ComUE). Retrieved from http://www.theses.fr/2019SACLS524

Chicago Manual of Style (16^th Edition):

Barbedienne, Quentin. “Étude d'états de surface topologiques en vue de leur intégration dans des dispositifs d'électronique de spin : Study of topological surface states for spintronic devices.” 2019. Doctoral Dissertation, Université Paris-Saclay (ComUE). Accessed April 12, 2021. http://www.theses.fr/2019SACLS524.

MLA Handbook (7^th Edition):

Barbedienne, Quentin. “Étude d'états de surface topologiques en vue de leur intégration dans des dispositifs d'électronique de spin : Study of topological surface states for spintronic devices.” 2019. Web. 12 Apr 2021.

Vancouver:

Barbedienne Q. Étude d'états de surface topologiques en vue de leur intégration dans des dispositifs d'électronique de spin : Study of topological surface states for spintronic devices. [Internet] [Doctoral dissertation]. Université Paris-Saclay (ComUE); 2019. [cited 2021 Apr 12]. Available from: http://www.theses.fr/2019SACLS524.

Council of Science Editors:

Barbedienne Q. Étude d'états de surface topologiques en vue de leur intégration dans des dispositifs d'électronique de spin : Study of topological surface states for spintronic devices. [Doctoral Dissertation]. Université Paris-Saclay (ComUE); 2019. Available from: http://www.theses.fr/2019SACLS524

NSYSU

13. Chin, Pei-Hao. Gauge field induced spin dynamics and spin conductivity in the Luttinger semiconductor system.

Degree: Master, Physics, 2015, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0606115-140740

► The main goal of this research is to realize the spin dynamics and the spin current in the non-spherical Luttinger Hamiltonian, which is a 4… (more)

Subjects/Keywords: Berry curvature; Luttinger Hamiltonian; semi-classical method; electron dynamics; spin current

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Chin, P. (2015). Gauge field induced spin dynamics and spin conductivity in the Luttinger semiconductor system. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0606115-140740

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chin, Pei-Hao. “Gauge field induced spin dynamics and spin conductivity in the Luttinger semiconductor system.” 2015. Thesis, NSYSU. Accessed April 12, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0606115-140740.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chin, Pei-Hao. “Gauge field induced spin dynamics and spin conductivity in the Luttinger semiconductor system.” 2015. Web. 12 Apr 2021.

Vancouver:

Chin P. Gauge field induced spin dynamics and spin conductivity in the Luttinger semiconductor system. [Internet] [Thesis]. NSYSU; 2015. [cited 2021 Apr 12]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0606115-140740.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chin P. Gauge field induced spin dynamics and spin conductivity in the Luttinger semiconductor system. [Thesis]. NSYSU; 2015. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0606115-140740

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Noel, Paul. Dynamical spin injection and spin to charge current conversion in oxide-based Rashba interfaces and topological insulators : Injection dynamique de spin et conversion courant de spin - courant de charge dans les interfaces Rashba à base d'oxydes et les isolants topologiques.

Degree: Docteur es, Physique de la matière condensée et du rayonnement, 2019, Université Grenoble Alpes (ComUE)

URL: http://www.theses.fr/2019GREAY062

►

L'utilisation de matériaux ferromagnétiques a longtemps été l'unique méthode pour détecter et produire des courants de spin. Cependant, depuis le milieu des années 2000 des… (more)

▼

L'utilisation de matériaux ferromagnétiques a longtemps été l'unique méthode pour détecter et produire des courants de spin. Cependant, depuis le milieu des années 2000 des méthodes alternatives ont été proposées. Un champ émergent de la spintronique, appelé spin-orbitronique, s'attelle à l'utilisation du couplage spin orbite pour détecter et produire des courants de spin en l'absence de matériaux ferromagnétiques. Une interconversion efficace entre courant de spin et courant de charge a pu être obtenues à l'aide de l'effet Hall de spin dans les métaux lourds tels que le Platine ou le Tantale. Une telle conversion peut aussi être obtenue en utilisant l'effet Edelstein dans les interfaces Rashba et les isolants topologiques.La conversion de courant de spin à courant de charge par effet Hall de spin et effet Edelstein inverse peut être étudiée par la méthode dite du pompage de spin par résonance ferromagnétique. Ce manuscrit présente ces différents effets de conversion ainsi que la technique utilisée basée sur une mesure électrique effectuée à la résonance ferromagnétique. Y sont présentés des résultats de conversion spin charge dans les métaux, les interfaces Rashba à base d'oxydes ainsi que dans les isolants topologiques. Parmi ces systèmes nous avons montré la possibilité de moduler à l'aide d'une grille électrostatique la conversion spin charge dans un gaz d'électron bidimensionel obtenu à la surface de l'oxyde SrTiO3. De plus il est possible de moduler, de façon rémanente, la conversion dans SrTiO3 grâce à la ferroélectricité obtenue à des températures cryogéniques.Parmi les autres systèmes étudiés les isolants topologiques HgTe et Sb2Te3 présentent des propriétés de conversion spin vers charge prometteuses à température ambiante. En particulier dans le cas de HgTe, en utilisant une couche de protection de HgCdTe nous avons pu obtenir des niveaux de conversion un ordre de grandeur plus élevé que dans le Platine.Ces résultats suggèrent que les gaz d'électrons bidimensionnels aux interfaces d'oxydes ainsi que les isolants topologiques sont des systèmes prometteurs pour la détections de courants de spin pour des applications au delà de la logique CMOS.

Using a ferromagnetic layer has been the first method to obtain and detect spin currents, allowing to modify the magnetization state of an adjacent layer using spin transfer torque. However, in recent years, an alternative way to manipulate spin currents has been proposed. An emerging field of spintronics, called spin-orbitronics, exploits the interplay between charge and spin currents enabled by the spin-orbit coupling (SOC) in non-magnetic systems. An efficient current conversion can be obtained through the Spin Hall Effect in heavy metals such as Platinum or Tantalum. The conversion can also be obtained by exploiting the Edelstein Effect in Rashba interfaces and topological insulators.The spin to charge conversion by means of Inverse Edelstein Effect and inverse Spin Hall Effect can be studied by the spin pumping by ferromagnetic resonance technique. This…

Advisors/Committee Members: Attané, Jean-Philippe (thesis director), Vila, Laurent (thesis director).

Subjects/Keywords: Spintronique; Spinorbitronique; Courants de spin; Effet Hall de spin; Effet Rashba; Isolants topologiques; Spintronics; Spinorbitronics; Spin current; Spin hall effect; Rashba effect; Topological insulators; 530

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Noel, P. (2019). Dynamical spin injection and spin to charge current conversion in oxide-based Rashba interfaces and topological insulators : Injection dynamique de spin et conversion courant de spin - courant de charge dans les interfaces Rashba à base d'oxydes et les isolants topologiques. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2019GREAY062

Chicago Manual of Style (16^th Edition):

Noel, Paul. “Dynamical spin injection and spin to charge current conversion in oxide-based Rashba interfaces and topological insulators : Injection dynamique de spin et conversion courant de spin - courant de charge dans les interfaces Rashba à base d'oxydes et les isolants topologiques.” 2019. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed April 12, 2021. http://www.theses.fr/2019GREAY062.

MLA Handbook (7^th Edition):

Noel, Paul. “Dynamical spin injection and spin to charge current conversion in oxide-based Rashba interfaces and topological insulators : Injection dynamique de spin et conversion courant de spin - courant de charge dans les interfaces Rashba à base d'oxydes et les isolants topologiques.” 2019. Web. 12 Apr 2021.

Vancouver:

Noel P. Dynamical spin injection and spin to charge current conversion in oxide-based Rashba interfaces and topological insulators : Injection dynamique de spin et conversion courant de spin - courant de charge dans les interfaces Rashba à base d'oxydes et les isolants topologiques. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2019. [cited 2021 Apr 12]. Available from: http://www.theses.fr/2019GREAY062.

Council of Science Editors:

Noel P. Dynamical spin injection and spin to charge current conversion in oxide-based Rashba interfaces and topological insulators : Injection dynamique de spin et conversion courant de spin - courant de charge dans les interfaces Rashba à base d'oxydes et les isolants topologiques. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2019. Available from: http://www.theses.fr/2019GREAY062

Uniwersytet im. Adama Mickiewicza w Poznaniu

15. Dyrdał, Anna. Spinowy efekt Halla .

Degree: 2013, Uniwersytet im. Adama Mickiewicza w Poznaniu

URL: http://hdl.handle.net/10593/6443

► Przedmiotem rozprawy są teoretyczne badania spinowego efektu Halla (SEH) w wybranych modelowych układach takich jak dwuwymiarowy gaz elektronowy, grafen i silicen oraz półprzewodniki IV-VI. W… (more)

Subjects/Keywords: Spinowy efekt Halla; Spin Hall effect; Prąd spinowy; Spin current spin-orbit interaction; Oddziaływanie spin-orbita; Graphene and silicene; Grafen i silicen; Półprzewodniki IV-VI; IV-VI semiconductors

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dyrdał, A. (2013). Spinowy efekt Halla . (Doctoral Dissertation). Uniwersytet im. Adama Mickiewicza w Poznaniu. Retrieved from http://hdl.handle.net/10593/6443

Chicago Manual of Style (16^th Edition):

Dyrdał, Anna. “Spinowy efekt Halla .” 2013. Doctoral Dissertation, Uniwersytet im. Adama Mickiewicza w Poznaniu. Accessed April 12, 2021. http://hdl.handle.net/10593/6443.

MLA Handbook (7^th Edition):

Dyrdał, Anna. “Spinowy efekt Halla .” 2013. Web. 12 Apr 2021.

Vancouver:

Dyrdał A. Spinowy efekt Halla . [Internet] [Doctoral dissertation]. Uniwersytet im. Adama Mickiewicza w Poznaniu; 2013. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10593/6443.

Council of Science Editors:

Dyrdał A. Spinowy efekt Halla . [Doctoral Dissertation]. Uniwersytet im. Adama Mickiewicza w Poznaniu; 2013. Available from: http://hdl.handle.net/10593/6443

16. Dugato, Danian Alexandre. Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd.

Degree: 2017, Universidade Federal de Santa Maria; Centro de Ciências Naturais e Exatas; Programa de Pós-Graduação em Física; UFSM; Brasil; Física

URL: http://repositorio.ufsm.br/handle/1/12779

►

In this work, we analyzed samples of thin films Ni81Fe19 and Pd with ZnO spacer. Ni81Fe19 is a ferromagnet with a low saturation magnetic field.… (more)

▼

In this work, we analyzed samples of thin films Ni81Fe19 and Pd with ZnO spacer. Ni81Fe19 is a ferromagnet with a low saturation magnetic field. Pd is a normal metal with high spinorbit coupling, much used in spin Hall effect and inverse spin Hall effect studies. ZnO is a semiconductor whose role is to reduce the charge current between layers. The sample have 5 nm of Ni81Fe19, 3 nm of Pd, and 2 nm of ZnO, with dimensions of 0.4 mm x 8 mm, deposited by magnetron sputtering. Using spin pumping we analyze the signal of the continuous voltage induced by ferromagnetic resonance. These samples the measured signal is a consequence of anisotropic magnetoresistance, anomalous Hall effect and inverse spin Hall effect. The thicknesses used contributes to a predominant inverse spin Hall effect signal. The ZnO spacer layer 2 nm reduces the effects of spin rectification, while maintaining spin current transfer.

Neste trabalho analisamos amostras de filmes finos de Ni81Fe19 e Pd separados por ZnO. O Ni81Fe19 foi escolhido por ser um ferromagneto com baixo campo magnético de saturação. O Pd é um metal normal com alto acoplamento spin-órbita, muito usado em estudos de efeito Hall de spin e efeito Hall de spin inverso. O ZnO é um semicondutor com o papel de diminuir a transferência de corrente de carga entre as camadas. As amostras tem espessura de 5 nm de Ni81Fe19, 3 nm de Pd e 2 nm de ZnO, com dimensões de 0,4 mm x 8 mm, depositadas por magnetron sputtering. Através da técnica de spin pumping analisamos o sinal de tensão contínua induzida por ressonância ferromagnética. Nestas amostras o sinal medido é consequência de efeitos de magnetorresistência anisotrópica, efeito Hall anômalo e efeito Hall de spin inverso. As espessuras utilizadas permitem um sinal de efeito Hall de spin inverso predominante. A camada espaçadora de 2nm de ZnO reduz os efeitos de retificação de spin, mantendo a transferência de corrente de spin.

Advisors/Committee Members: Dorneles, Lucio Strazzabosco, Pereira, Luis Gustavo, Silva, Ricardo Barreto da.

Subjects/Keywords: Correntes de spin; Efeito Hall de spin inverso; Magnetorresistência; Spin current; Inverse spin Hall effect; Magnetoresistance; CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dugato, D. A. (2017). Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd. (Masters Thesis). Universidade Federal de Santa Maria; Centro de Ciências Naturais e Exatas; Programa de Pós-Graduação em Física; UFSM; Brasil; Física. Retrieved from http://repositorio.ufsm.br/handle/1/12779

Chicago Manual of Style (16^th Edition):

Dugato, Danian Alexandre. “Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd.” 2017. Masters Thesis, Universidade Federal de Santa Maria; Centro de Ciências Naturais e Exatas; Programa de Pós-Graduação em Física; UFSM; Brasil; Física. Accessed April 12, 2021. http://repositorio.ufsm.br/handle/1/12779.

MLA Handbook (7^th Edition):

Dugato, Danian Alexandre. “Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd.” 2017. Web. 12 Apr 2021.

Vancouver:

Dugato DA. Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd. [Internet] [Masters thesis]. Universidade Federal de Santa Maria; Centro de Ciências Naturais e Exatas; Programa de Pós-Graduação em Física; UFSM; Brasil; Física; 2017. [cited 2021 Apr 12]. Available from: http://repositorio.ufsm.br/handle/1/12779.

Council of Science Editors:

Dugato DA. Magnetorresistência e correntes de spin em Multicamadas de Ni81Fe19/ZnO/Pd. [Masters Thesis]. Universidade Federal de Santa Maria; Centro de Ciências Naturais e Exatas; Programa de Pós-Graduação em Física; UFSM; Brasil; Física; 2017. Available from: http://repositorio.ufsm.br/handle/1/12779

NSYSU

17. Yang, Kung-Shang. Probing the spin polarized current in oxygen deficient Co-doped ZnO by Andreev reflection technique.

Degree: PhD, Physics, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0102117-141239

► Dilute magnetic semiconductor (DMO) combines spin-polarization and magnetic properties in semiconducting state. One of the compound base on ZnO have potential for application due to… (more)

Subjects/Keywords: Oxygen vacancy; Point-contact Andreev reflection; Spin polarization; ZnO; Spin current; dilute Magnetic Oxide; II-VI Compound Semiconductor

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, K. (2017). Probing the spin polarized current in oxygen deficient Co-doped ZnO by Andreev reflection technique. (Doctoral Dissertation). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0102117-141239

Chicago Manual of Style (16^th Edition):

Yang, Kung-Shang. “Probing the spin polarized current in oxygen deficient Co-doped ZnO by Andreev reflection technique.” 2017. Doctoral Dissertation, NSYSU. Accessed April 12, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0102117-141239.

MLA Handbook (7^th Edition):

Yang, Kung-Shang. “Probing the spin polarized current in oxygen deficient Co-doped ZnO by Andreev reflection technique.” 2017. Web. 12 Apr 2021.

Vancouver:

Yang K. Probing the spin polarized current in oxygen deficient Co-doped ZnO by Andreev reflection technique. [Internet] [Doctoral dissertation]. NSYSU; 2017. [cited 2021 Apr 12]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0102117-141239.

Council of Science Editors:

Yang K. Probing the spin polarized current in oxygen deficient Co-doped ZnO by Andreev reflection technique. [Doctoral Dissertation]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0102117-141239

University of South Carolina

18. SUN, ZHELIN. Modification of the Stoner-Wohlfarth Astroid by A Spin-Polarized Current.

Degree: MS, Physics and Astronomy, 2011, University of South Carolina

URL: https://scholarcommons.sc.edu/etd/1759

► Spintronics, or Spin Electronics, is an emerging and promising technology that exploits the intrinsic spin of the electrons to make next generation nano-scale solid-state… (more)

Subjects/Keywords: Physical Sciences and Mathematics; Physics; CONDENSE MATTER PHYSICS; MAGNETISM; NANOSCIENCE; SPIN-POLARIZED CURRENT; SPIN TRANSFER TORQUE; STONER-WOHLFARTH ASTROID

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APA (6^th Edition):

SUN, Z. (2011). Modification of the Stoner-Wohlfarth Astroid by A Spin-Polarized Current. (Masters Thesis). University of South Carolina. Retrieved from https://scholarcommons.sc.edu/etd/1759

Chicago Manual of Style (16^th Edition):

SUN, ZHELIN. “Modification of the Stoner-Wohlfarth Astroid by A Spin-Polarized Current.” 2011. Masters Thesis, University of South Carolina. Accessed April 12, 2021. https://scholarcommons.sc.edu/etd/1759.

MLA Handbook (7^th Edition):

SUN, ZHELIN. “Modification of the Stoner-Wohlfarth Astroid by A Spin-Polarized Current.” 2011. Web. 12 Apr 2021.

Vancouver:

SUN Z. Modification of the Stoner-Wohlfarth Astroid by A Spin-Polarized Current. [Internet] [Masters thesis]. University of South Carolina; 2011. [cited 2021 Apr 12]. Available from: https://scholarcommons.sc.edu/etd/1759.

Council of Science Editors:

SUN Z. Modification of the Stoner-Wohlfarth Astroid by A Spin-Polarized Current. [Masters Thesis]. University of South Carolina; 2011. Available from: https://scholarcommons.sc.edu/etd/1759

Kyoto University

19. Shigematsu, Ei. Study on transport and conversion of ac and dc spin current generated by magnetization dynamics .

Degree: 2020, Kyoto University

URL: http://hdl.handle.net/2433/245846

Subjects/Keywords: spintronics; semiconductor spintronics; spin pumping; ac spin current

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APA (6^th Edition):

Shigematsu, E. (2020). Study on transport and conversion of ac and dc spin current generated by magnetization dynamics . (Thesis). Kyoto University. Retrieved from http://hdl.handle.net/2433/245846

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shigematsu, Ei. “Study on transport and conversion of ac and dc spin current generated by magnetization dynamics .” 2020. Thesis, Kyoto University. Accessed April 12, 2021. http://hdl.handle.net/2433/245846.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shigematsu, Ei. “Study on transport and conversion of ac and dc spin current generated by magnetization dynamics .” 2020. Web. 12 Apr 2021.

Vancouver:

Shigematsu E. Study on transport and conversion of ac and dc spin current generated by magnetization dynamics . [Internet] [Thesis]. Kyoto University; 2020. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/2433/245846.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shigematsu E. Study on transport and conversion of ac and dc spin current generated by magnetization dynamics . [Thesis]. Kyoto University; 2020. Available from: http://hdl.handle.net/2433/245846

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Saskatchewan

20. Desmarais, Jacques K. Development of Tools for the Study of Heavy-Element Containing Periodic Systems in the CRYSTAL Code and their Application.

Degree: 2020, University of Saskatchewan

URL: http://hdl.handle.net/10388/13055

► This thesis investigates the development of first-principles methods for the study of heavy-element containing periodic systems, as well as their application, in particular to crystalline… (more)

▼ This thesis investigates the development of first-principles methods for the study of heavy-element containing periodic systems, as well as their application, in particular to crystalline lanthanide oxides. The Generalized Kohn-Sham Density Functional Theory (GKS-DFT, i.e. in which density functional approximations are built directly from KS orbitals, using so-called hybrid functionals) was shown to provide a particularly effective means to correct for self-interaction errors that plague more conventional local or semi-local formulations in a scalar-relativistic (SR) context. As such, the SR GKS-DFT scheme allowed for a detailed characterization of the electronic structure of the lanthanide sesquioxide series, and enabled (for the first time) to rationalize all known electronic and structural pressure-induced phase transitions in the prototypical strongly-correlated and mixed-valence material EuO. But the hybrid functional approach proved even more useful when developing instead fully relativistic theories and algorithms, which include not only SR effect, but also spin-dependent relativistic effects, such as spin-orbit coupling (SOC). Coincidentally, this thesis reports the first implementation for a self-consistent treatment of SOC in periodic systems with a fraction of exact non-local Fock exchange in a two- component spinor basis (2c-SCF). The numerous advantages of using such a formulation, as opposed to the more approximate treatments of previously existing implementations, are discussed. These advantages originate from the ability of the Fock exchange operator to locally rotate the magnetization of the system with respect to a starting guess configuration (local magnetic torque). In addition, the non-local Fock exchange operator permits to include in the two-electron potential the contribution of the spinors that are mapped to certain spin-blocks of the single-particle density matrix. This allows for a proper treatment of the orbital relaxation of current densities, and their coupling with the other density variables. As a result, it is shown that the lack of Fock exchange (or even its more approximate treatment in a one-component basis, as with previous implementations) from more conventional formulations of the KS-DFT means that the calculation would not allow to access the full range of time-reversal symmetry broken states. This is because, it is shown that in the absence of Fock exchange, the band structure is constrained by a sum rule, linking the one-electron energy levels at opposite points in the first Brillouin zone (kj and −kj). Advisors/Committee Members: Pan, Yuanming, Tse, John S., Erba, Alessandro, Civalleri, Bartolomeo, Ansdell, Kevin, Bowles, Richard, Ugliengo, Piero.

Subjects/Keywords: ab initio methods; rare earth elements; lanthanides; spin-orbit coupling; spin-current density functional theory; CRYSTAL program

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APA (6^th Edition):

Desmarais, J. K. (2020). Development of Tools for the Study of Heavy-Element Containing Periodic Systems in the CRYSTAL Code and their Application. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/13055

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Desmarais, Jacques K. “Development of Tools for the Study of Heavy-Element Containing Periodic Systems in the CRYSTAL Code and their Application.” 2020. Thesis, University of Saskatchewan. Accessed April 12, 2021. http://hdl.handle.net/10388/13055.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Desmarais, Jacques K. “Development of Tools for the Study of Heavy-Element Containing Periodic Systems in the CRYSTAL Code and their Application.” 2020. Web. 12 Apr 2021.

Vancouver:

Desmarais JK. Development of Tools for the Study of Heavy-Element Containing Periodic Systems in the CRYSTAL Code and their Application. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/10388/13055.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Desmarais JK. Development of Tools for the Study of Heavy-Element Containing Periodic Systems in the CRYSTAL Code and their Application. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/13055

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

21. Guerra, Gabriel Andrés Fonseca. Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials.

Degree: 2014, Universidade Federal de Pernambuco

URL: https://repositorio.ufpe.br/handle/123456789/12719

►

Conselho Nacional de Desenvolvimento Científi co e Tecnol ógico; Coordenação de Aperfeiçoamento de Pessoal de Ní vel Superior; Financiadora de Estudos e Projetos; Fundação de… (more)

▼

Conselho Nacional de Desenvolvimento Científi co e Tecnol ógico; Coordenação de Aperfeiçoamento de Pessoal de Ní vel Superior; Financiadora de Estudos e Projetos; Fundação de Amparo a Ciência e Tecnologia do Estado de Pernambuco.

In this master thesis we study experimentally the longitudinal spin Seebeck effect (LSSE) in bilayers made of a ferromagnetic insulator (FMI) and a metallic layer (M). We also present a theoretical model based on the spin current density ⃗ Js carried by a non-equilibrium magnon distribution, generated by a thermal gradient ∇T across the thickness of the FMI. When ⃗ Js reach the FMI/M interface it is pumped towards the M layer due to conservation of the angular momentum, so, the M layer is essential for the LSSE existence. Here the FMI consists of a Yttrium Iron Garnet (YIG) lm, grown over a Gadolinium Gallium Garnet (GGG) substrate. Different metallic materials were used as the M layer i.e. Pt and Ta that have normal behavior and Py that is a ferromagnetic metal (FMM). The experimental procedure consists of systematic measurements of the electric voltage VISHE, produced by ⃗ Js through the Inverse Spin Hall Effect (ISHE) in the normal metal or (FMM) layer. In YIG/Pt measurements were done in the temperature range from 20 to 300 K. The experimental data are tted to the proposed model for the LSSE and good agreement is obtained. The results shows that the Py and Ta can be used to detect the LSSE with the ISHE. The results of this master thesis have strong interest in the area of spin caloritronics helping to the development of the eld and to raise possibilities of new spintronic devices. – – Nesta diserta ção e estudado experimentalmente o Efeito Seebeck de Spin Longi- tudinal (LSSE), em bicamadas formadas por um isolante ferromagn etico (FMI) e um lme metalico (M). Tamb em foi desenvolvido um modelo te orico baseado na den- sidade de corrente de spin ⃗ Js que existe quando uma distribui c~ao de m agnons fora do equil brio e gerada por um gradiente t ermico ∇T aplicado na sec ção transversal do FMI. Quando ⃗ Js chega na interface FMI/M e bombeada para a camada M satis- fazendo a conserva ção do momentum angular, assim que a camada NM e essencial para ter um LSSE. Como camada FMI foi utilizada a granada de trio e ferro (YIG) crescida num substrato de (GGG). Diferentes materiais metalicos foram utilizados como camada M, sendo Pt e Ta paramagn eticos e o Py ferromagnetico. O proced- imento experimental consiste na medi c~ao sistem atica da voltagem el etrica VISHE, que e produzida por ⃗ Js por meio do efeito Hall de spin inverso (ISHE) que ocorre na camada M. As medidas em YIG/Pt foram feitas numa faixa ampla de temperatura de 20 a 300 K. Os dados experimentais são fi tados com a teoria proposta para o LSSE encontrando-se boa concordância. Nossos resultados mostram que o Py e o Ta s~ao bons candidatos para detec ção do LSSE. Esta disserta ção e de grande interesse na area da caloritrônica de spin, ajudando no desenvolvimento deste campo e…

Advisors/Committee Members: Rezende, Sergio Machado.

Subjects/Keywords: Spin Seebeck effect; Spin Hall effect; Magnon transport; Thin lms; Pure spin current; Spintronics; Efeito Seebeck de spin; Efeito Hall de spin; Transporte de magnons; Filmes finos; Corrente pura de spin; Spintrônica

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APA (6^th Edition):

Guerra, G. A. F. (2014). Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials. (Masters Thesis). Universidade Federal de Pernambuco. Retrieved from https://repositorio.ufpe.br/handle/123456789/12719

Chicago Manual of Style (16^th Edition):

Guerra, Gabriel Andrés Fonseca. “Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials.” 2014. Masters Thesis, Universidade Federal de Pernambuco. Accessed April 12, 2021. https://repositorio.ufpe.br/handle/123456789/12719.

MLA Handbook (7^th Edition):

Guerra, Gabriel Andrés Fonseca. “Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials.” 2014. Web. 12 Apr 2021.

Vancouver:

Guerra GAF. Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials. [Internet] [Masters thesis]. Universidade Federal de Pernambuco; 2014. [cited 2021 Apr 12]. Available from: https://repositorio.ufpe.br/handle/123456789/12719.

Council of Science Editors:

Guerra GAF. Study of the longitudinal spin Seebeck effect in hybrid structures with yttrium iron garnet and various metallic materials. [Masters Thesis]. Universidade Federal de Pernambuco; 2014. Available from: https://repositorio.ufpe.br/handle/123456789/12719

Penn State University

22. Ying, Yiqun Alex. Probing the Enhanced Superconductivity and Chiral Edge Current in Spin-triplet Superconductor Sr2RuO4.

Degree: 2012, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/16138

► This dissertation aims at providing insight into the mechanism of spin-triplet superconductivity in Sr2RuO4, the only Cu-free layered perovskite material found to be superconducting. The… (more)

Subjects/Keywords: Sr2RuO4; spin-triplet superconductivity; chiral p-wave; proximity effect; dislocation; Josephson interferometer; chiral edge current

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APA (6^th Edition):

Ying, Y. A. (2012). Probing the Enhanced Superconductivity and Chiral Edge Current in Spin-triplet Superconductor Sr2RuO4. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/16138

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ying, Yiqun Alex. “Probing the Enhanced Superconductivity and Chiral Edge Current in Spin-triplet Superconductor Sr2RuO4.” 2012. Thesis, Penn State University. Accessed April 12, 2021. https://submit-etda.libraries.psu.edu/catalog/16138.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ying, Yiqun Alex. “Probing the Enhanced Superconductivity and Chiral Edge Current in Spin-triplet Superconductor Sr2RuO4.” 2012. Web. 12 Apr 2021.

Vancouver:

Ying YA. Probing the Enhanced Superconductivity and Chiral Edge Current in Spin-triplet Superconductor Sr2RuO4. [Internet] [Thesis]. Penn State University; 2012. [cited 2021 Apr 12]. Available from: https://submit-etda.libraries.psu.edu/catalog/16138.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ying YA. Probing the Enhanced Superconductivity and Chiral Edge Current in Spin-triplet Superconductor Sr2RuO4. [Thesis]. Penn State University; 2012. Available from: https://submit-etda.libraries.psu.edu/catalog/16138

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

23. Salazar, Cuauhtemoc. Effective Models for Optical Properties: A Study on 1D, 2D, and 3D Materials.

Degree: PhD, 2018, University of Toronto

URL: http://hdl.handle.net/1807/82815

► In this thesis I employ effective Hamiltonian models to study the electronic structure of materials. With these models I study charge- and spin-injection induced by… (more)

Subjects/Keywords: 2D Materials; Alloys; Current Injection; Effective Models; Optical Coherent Control; Spin Injection; 0605

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APA (6^th Edition):

Salazar, C. (2018). Effective Models for Optical Properties: A Study on 1D, 2D, and 3D Materials. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/82815

Chicago Manual of Style (16^th Edition):

Salazar, Cuauhtemoc. “Effective Models for Optical Properties: A Study on 1D, 2D, and 3D Materials.” 2018. Doctoral Dissertation, University of Toronto. Accessed April 12, 2021. http://hdl.handle.net/1807/82815.

MLA Handbook (7^th Edition):

Salazar, Cuauhtemoc. “Effective Models for Optical Properties: A Study on 1D, 2D, and 3D Materials.” 2018. Web. 12 Apr 2021.

Vancouver:

Salazar C. Effective Models for Optical Properties: A Study on 1D, 2D, and 3D Materials. [Internet] [Doctoral dissertation]. University of Toronto; 2018. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/1807/82815.

Council of Science Editors:

Salazar C. Effective Models for Optical Properties: A Study on 1D, 2D, and 3D Materials. [Doctoral Dissertation]. University of Toronto; 2018. Available from: http://hdl.handle.net/1807/82815

University of Minnesota

24. Stecklein, Gordon. Generation and Absorption of Pure Spin Currents Using Graphene Nonlocal Spin Valves.

Degree: PhD, Physics, 01, University of Minnesota

URL: http://hdl.handle.net/11299/218060

► This work describes the fabrication and measurement of nanoscale devices in which a spin-polarized electrical current is used to inject spins into graphene, which then… (more)

Subjects/Keywords: Graphene; Interface Physics; Spin Current; Spintronics

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APA (6^th Edition):

Stecklein, G. (01). Generation and Absorption of Pure Spin Currents Using Graphene Nonlocal Spin Valves. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/218060

Chicago Manual of Style (16^th Edition):

Stecklein, Gordon. “Generation and Absorption of Pure Spin Currents Using Graphene Nonlocal Spin Valves.” 01. Doctoral Dissertation, University of Minnesota. Accessed April 12, 2021. http://hdl.handle.net/11299/218060.

MLA Handbook (7^th Edition):

Stecklein, Gordon. “Generation and Absorption of Pure Spin Currents Using Graphene Nonlocal Spin Valves.” 01. Web. 12 Apr 2021.

Vancouver:

Stecklein G. Generation and Absorption of Pure Spin Currents Using Graphene Nonlocal Spin Valves. [Internet] [Doctoral dissertation]. University of Minnesota; 01. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/11299/218060.

Council of Science Editors:

Stecklein G. Generation and Absorption of Pure Spin Currents Using Graphene Nonlocal Spin Valves. [Doctoral Dissertation]. University of Minnesota; 01. Available from: http://hdl.handle.net/11299/218060

25. YANG YUMENG. STUDY OF SPIN CURRENT EFFECT IN METALLIC ANTIFERROMAGNET AND HEAVY METAL HETEROSTRUCTURES.

Degree: 2016, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/134916

Subjects/Keywords: Spin orbit torque; spin Hall magnetoresistance; antiferromagnet; spintronics; spin current; heavy metal

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

YUMENG, Y. (2016). STUDY OF SPIN CURRENT EFFECT IN METALLIC ANTIFERROMAGNET AND HEAVY METAL HETEROSTRUCTURES. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/134916

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

YUMENG, YANG. “STUDY OF SPIN CURRENT EFFECT IN METALLIC ANTIFERROMAGNET AND HEAVY METAL HETEROSTRUCTURES.” 2016. Thesis, National University of Singapore. Accessed April 12, 2021. http://scholarbank.nus.edu.sg/handle/10635/134916.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

YUMENG, YANG. “STUDY OF SPIN CURRENT EFFECT IN METALLIC ANTIFERROMAGNET AND HEAVY METAL HETEROSTRUCTURES.” 2016. Web. 12 Apr 2021.

Vancouver:

YUMENG Y. STUDY OF SPIN CURRENT EFFECT IN METALLIC ANTIFERROMAGNET AND HEAVY METAL HETEROSTRUCTURES. [Internet] [Thesis]. National University of Singapore; 2016. [cited 2021 Apr 12]. Available from: http://scholarbank.nus.edu.sg/handle/10635/134916.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

YUMENG Y. STUDY OF SPIN CURRENT EFFECT IN METALLIC ANTIFERROMAGNET AND HEAVY METAL HETEROSTRUCTURES. [Thesis]. National University of Singapore; 2016. Available from: http://scholarbank.nus.edu.sg/handle/10635/134916

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

26. TAKASHI FUJITA. Theoretical study of spin currents in semiconductors.

Degree: 2009, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/18632

Subjects/Keywords: spintronics; spin current; spin orbit coupling; spin-Hall effect; gauge fields; semiconductor physics

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APA (6^th Edition):

FUJITA, T. (2009). Theoretical study of spin currents in semiconductors. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/18632

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

FUJITA, TAKASHI. “Theoretical study of spin currents in semiconductors.” 2009. Thesis, National University of Singapore. Accessed April 12, 2021. http://scholarbank.nus.edu.sg/handle/10635/18632.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

FUJITA, TAKASHI. “Theoretical study of spin currents in semiconductors.” 2009. Web. 12 Apr 2021.

Vancouver:

FUJITA T. Theoretical study of spin currents in semiconductors. [Internet] [Thesis]. National University of Singapore; 2009. [cited 2021 Apr 12]. Available from: http://scholarbank.nus.edu.sg/handle/10635/18632.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

FUJITA T. Theoretical study of spin currents in semiconductors. [Thesis]. National University of Singapore; 2009. Available from: http://scholarbank.nus.edu.sg/handle/10635/18632

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

27. HO CONG SON. THEORY OF SPIN TRANSPORT IN SPIN-ORBIT COUPLING SYSTEMS.

Degree: 2014, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/118273

Subjects/Keywords: spin-orbit coupling; spin Hall effect; spin current; spin-motive force; Zitterbewegung; spin transport

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APA (6^th Edition):

SON, H. C. (2014). THEORY OF SPIN TRANSPORT IN SPIN-ORBIT COUPLING SYSTEMS. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/118273

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

SON, HO CONG. “THEORY OF SPIN TRANSPORT IN SPIN-ORBIT COUPLING SYSTEMS.” 2014. Thesis, National University of Singapore. Accessed April 12, 2021. http://scholarbank.nus.edu.sg/handle/10635/118273.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

SON, HO CONG. “THEORY OF SPIN TRANSPORT IN SPIN-ORBIT COUPLING SYSTEMS.” 2014. Web. 12 Apr 2021.

Vancouver:

SON HC. THEORY OF SPIN TRANSPORT IN SPIN-ORBIT COUPLING SYSTEMS. [Internet] [Thesis]. National University of Singapore; 2014. [cited 2021 Apr 12]. Available from: http://scholarbank.nus.edu.sg/handle/10635/118273.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

SON HC. THEORY OF SPIN TRANSPORT IN SPIN-ORBIT COUPLING SYSTEMS. [Thesis]. National University of Singapore; 2014. Available from: http://scholarbank.nus.edu.sg/handle/10635/118273

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Hurst, Jerome. Ultrafast spin dynamics in ferromagnetic thin films : Dynamique ultra-rapide de spin dans des films ferromagnétiques.

Degree: Docteur es, Physique de la matière condensée, 2017, Université de Strasbourg

URL: http://www.theses.fr/2017STRAE004

►

Dans cette thèse, on s’intéresse à l'étude théorique et à la simulation numérique de la dynamique de charges et de spins dans des nano-structures métalliques.… (more)

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Dans cette thèse, on s’intéresse à l'étude théorique et à la simulation numérique de la dynamique de charges et de spins dans des nano-structures métalliques. Ces dernières années la physique des nano-structures métalliques à connu un intérêt croissant, aussi bien d'un point de vue de la physique fondamental que d'un point de vue des applications technologiques. Il est donc essentiel d'avoir des modèles théoriques nous permettant de décrire correctement ce type d'objets. Cette thèse comporte deux études distinctes. Dans un premier temps on utilise un modèle semi-classique dans l'espace des phases afin d'étudier la dynamique de charges et de spins dans des films ferromagnétiques(Nickel). On décrit dans le même modèle le magnétisme itinérant et le magnétisme localisé. On montre qu'il est possible, en excitant le système avec un laser pulsé femtoseconde dans le domaine du visible, de créer un courant de spin oscillant dans la direction normal du film sur des temps ultrarapides(femtoseconde). Dans un second temps on s’intéresse à la dynamique de charge d'électrons confinés dans des nano-particules d'Or ou bien encore par des potentiels anisotropes. On montre que de telles systèmes sont des candidats intéressant pour faire de la génération d'harmoniques.

In this thesis we focus on the theoritical description and on the numerical simulation of the charge and spin dynamics in metallic nano-structures. The physics of metallic nano-structures has stimulated a huge amount of scientific interest in the last two decades, both for fundamental research and for potential technological applications. The thesis is divided in two parts. In the first part we use a semiclassical phase-space model to study the ultrafast charge and spin dynamics in thin ferromagnetic films (Nickel). Both itinerant and localized magnetism are taken into account. It is shown that an oscillating spin current can be generated in the film via the application of a femtosecond laser pulse in the visible range. In the second part we focus on the charge dynamics of electrons confined in metallic nano-particles (Gold) or anisotropic wells. We show that such systems can be used for high harmonic generation.

Advisors/Committee Members: Hervieux, Paul-Antoine (thesis director), Manfredi, Giovanni (thesis director).

Subjects/Keywords: Dynamique de spin; Magnétisme ultra-rapide; Méthode dans l’espace des phases; Équations de Wigner/Vlasov; Courant de spin; Dynamique non linéaire; Approche variationnelle; Génération d'harmoniques; Spin dynamics; Ultrafast magnetism; Phase-space methods; Wigner/Vlasov equation; Spin current; Nonlinear dynamics; Variational approach; High harmonic generation; 530.4

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hurst, J. (2017). Ultrafast spin dynamics in ferromagnetic thin films : Dynamique ultra-rapide de spin dans des films ferromagnétiques. (Doctoral Dissertation). Université de Strasbourg. Retrieved from http://www.theses.fr/2017STRAE004

Chicago Manual of Style (16^th Edition):

Hurst, Jerome. “Ultrafast spin dynamics in ferromagnetic thin films : Dynamique ultra-rapide de spin dans des films ferromagnétiques.” 2017. Doctoral Dissertation, Université de Strasbourg. Accessed April 12, 2021. http://www.theses.fr/2017STRAE004.

MLA Handbook (7^th Edition):

Hurst, Jerome. “Ultrafast spin dynamics in ferromagnetic thin films : Dynamique ultra-rapide de spin dans des films ferromagnétiques.” 2017. Web. 12 Apr 2021.

Vancouver:

Hurst J. Ultrafast spin dynamics in ferromagnetic thin films : Dynamique ultra-rapide de spin dans des films ferromagnétiques. [Internet] [Doctoral dissertation]. Université de Strasbourg; 2017. [cited 2021 Apr 12]. Available from: http://www.theses.fr/2017STRAE004.

Council of Science Editors:

Hurst J. Ultrafast spin dynamics in ferromagnetic thin films : Dynamique ultra-rapide de spin dans des films ferromagnétiques. [Doctoral Dissertation]. Université de Strasbourg; 2017. Available from: http://www.theses.fr/2017STRAE004

Kyoto University / 京都大学

29. Nakata, Kouki. Non-Equilibrium Quantum Spin Transport Theory Based on Schwinger-Keldysh Formalism : Schwinger-Keldysh形式に基づく非平衡量子スピン輸送理論.

Degree: 博士(理学), 2014, Kyoto University / 京都大学

URL: http://hdl.handle.net/2433/188467 ; http://dx.doi.org/10.14989/doctor.k18056

新制・課程博士

甲第18056号

理博第3934号

Subjects/Keywords: Schwinger-Keldysh formalism; Spin current; Spin pumping; Magnon; Bose-Einstein condensation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nakata, K. (2014). Non-Equilibrium Quantum Spin Transport Theory Based on Schwinger-Keldysh Formalism : Schwinger-Keldysh形式に基づく非平衡量子スピン輸送理論. (Thesis). Kyoto University / 京都大学. Retrieved from http://hdl.handle.net/2433/188467 ; http://dx.doi.org/10.14989/doctor.k18056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nakata, Kouki. “Non-Equilibrium Quantum Spin Transport Theory Based on Schwinger-Keldysh Formalism : Schwinger-Keldysh形式に基づく非平衡量子スピン輸送理論.” 2014. Thesis, Kyoto University / 京都大学. Accessed April 12, 2021. http://hdl.handle.net/2433/188467 ; http://dx.doi.org/10.14989/doctor.k18056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nakata, Kouki. “Non-Equilibrium Quantum Spin Transport Theory Based on Schwinger-Keldysh Formalism : Schwinger-Keldysh形式に基づく非平衡量子スピン輸送理論.” 2014. Web. 12 Apr 2021.

Vancouver:

Nakata K. Non-Equilibrium Quantum Spin Transport Theory Based on Schwinger-Keldysh Formalism : Schwinger-Keldysh形式に基づく非平衡量子スピン輸送理論. [Internet] [Thesis]. Kyoto University / 京都大学; 2014. [cited 2021 Apr 12]. Available from: http://hdl.handle.net/2433/188467 ; http://dx.doi.org/10.14989/doctor.k18056.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nakata K. Non-Equilibrium Quantum Spin Transport Theory Based on Schwinger-Keldysh Formalism : Schwinger-Keldysh形式に基づく非平衡量子スピン輸送理論. [Thesis]. Kyoto University / 京都大学; 2014. Available from: http://hdl.handle.net/2433/188467 ; http://dx.doi.org/10.14989/doctor.k18056

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Université Paris-Sud – Paris XI

30. Nguyen, Ngoc-Minh. Propagation de parois magnétiques dans des films et des pistes à anisotropie magnétique perpendiculaire : Propagation de domain walls in the thin films and wires with perpendicular magnetic anisotropy.

Degree: Docteur es, Physique, 2012, Université Paris-Sud – Paris XI

URL: http://www.theses.fr/2012PA112356

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Cette thèse est consacrée à l’étude des mécanismes de propagation de parois magnétiques dans des films et des pistes magnétiques basés sur des matériaux à… (more)

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Cette thèse est consacrée à l’étude des mécanismes de propagation de parois magnétiques dans des films et des pistes magnétiques basés sur des matériaux à anisotropie magnétique perpendiculaire qui sont très prometteurs pour les mémoires magnétiques non volatiles d’ultra haute densité. Je me suis principalement intéressé à l’influence des défauts structuraux sur les mécanismes de dépiegeage de parois en utilisant la technique de microscopie Kerr ainsi que des mesures de transport. Trois résultats importants ont été mis en évidence : (1) Dans des vannes de spin de type CoNi/Cu/CoNi, il existe une forte influence du champ dipolaire généré par la couche dure qui peut influencer la nucléation parasite de paroi magnétique dans la couche libre et créer une propagation asymétrique sous l’effet d’un courant polarisé. J’ai aussi montré que dans des pistes sub-50nm, le renversement de l’aimantation s’effectue par des événements multiples de nucléation à cause de la présence de centres de piégeage fort qui bloquent la propagation ; (2) En visualisant la géométrie des domaines magnétiques et en étudiant les lois de reptation, j’ai montré la présence d’une faible densité de défauts structuraux et de faibles champs de propagation dans les multicouches texturés/amorphe de CoNi-CoFeB et cristallisés de Ta-CoFeB-MgO ; (3) J’ai finalement mis en évidence un effet du transfert de spin à de faibles densités de courant (≈5x1011 A/cm2) dans les pistes de CoNi-CoFeB. J’ai aussi montré une forte influence du champ d’Oesterd sur la propagation de parois liée à la présence de faibles champs de propagation. Finalement, dans le cas des pistes basées sur des films cristallisés de Ta-CoFeB-MgO, j’ai pu mesurer la vitesse sur 10 ordres de grandeur et montrer que les parois se propagent à des champs de propagation ultra faibles (0,1mT).

This work is focused on the study of magnetic domain wall propagation mechanisms in the thin films and wires based on materials with perpendicular magnetic anisotropy which are promissing for the non-volatile magnetic memory of ultra high density. I’m interested in the influence of structural defects on the mechanisms of domain wall propagation by using the Kerr microscopy technique and the transport measurements. Three important results were obtained: (1) In the spin valve structure of CoNi/Cu/CoNi, a strong influence of the dipolar magnetic field induced by the hard layer can generate a parasitic nucleation in the soft layer and create an asymmetric domain wall propagation driven by a spin polarized current. I also demonstrated that in sub-50nm wires, the nature of magnetization reversal process is the multiple nucleation events because of strong pinning centers that hinder the domain wall motion; (2) By observing the magnetic domain geometry et studying the creep law, I have pointed out that in the CoNi-CoFeB multilayers and the crystallized Ta-CoFeB-MgO multilayers, the structural defect density is low and the propagation fields can be reduced; (3) I found a spin-transfer effect with low current density…

Advisors/Committee Members: Ravelosona, Dafiné (thesis director), Vernier, Nicolas (thesis director).

Subjects/Keywords: Matériaux ferromagnétiques; Anisotropie magnétique perpendiculaire; Paroi magnétique; Courant polarisé en spin; Microscopie Kerr; Ferromagnetical materials; Perpendicular magnetic anisotropy; Domain wall; Spin polarised current; Kerr microscopy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nguyen, N. (2012). Propagation de parois magnétiques dans des films et des pistes à anisotropie magnétique perpendiculaire : Propagation de domain walls in the thin films and wires with perpendicular magnetic anisotropy. (Doctoral Dissertation). Université Paris-Sud – Paris XI. Retrieved from http://www.theses.fr/2012PA112356

Chicago Manual of Style (16^th Edition):

Nguyen, Ngoc-Minh. “Propagation de parois magnétiques dans des films et des pistes à anisotropie magnétique perpendiculaire : Propagation de domain walls in the thin films and wires with perpendicular magnetic anisotropy.” 2012. Doctoral Dissertation, Université Paris-Sud – Paris XI. Accessed April 12, 2021. http://www.theses.fr/2012PA112356.

MLA Handbook (7^th Edition):

Nguyen, Ngoc-Minh. “Propagation de parois magnétiques dans des films et des pistes à anisotropie magnétique perpendiculaire : Propagation de domain walls in the thin films and wires with perpendicular magnetic anisotropy.” 2012. Web. 12 Apr 2021.

Vancouver:

Nguyen N. Propagation de parois magnétiques dans des films et des pistes à anisotropie magnétique perpendiculaire : Propagation de domain walls in the thin films and wires with perpendicular magnetic anisotropy. [Internet] [Doctoral dissertation]. Université Paris-Sud – Paris XI; 2012. [cited 2021 Apr 12]. Available from: http://www.theses.fr/2012PA112356.

Council of Science Editors:

Nguyen N. Propagation de parois magnétiques dans des films et des pistes à anisotropie magnétique perpendiculaire : Propagation de domain walls in the thin films and wires with perpendicular magnetic anisotropy. [Doctoral Dissertation]. Université Paris-Sud – Paris XI; 2012. Available from: http://www.theses.fr/2012PA112356

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