Academic literature on the topic 'Spin currents'

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Dissertations / Theses on the topic "Spin currents"

1

Wittmann, Angela Dorothea Anshi. "Spin currents in organic semiconductors." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/290148.

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Organic semiconductors have recently been found to have a comparably large spin diffusion time and length. This makes them ideal candidates for spintronic devices. However, spin injection, transport and detection properties in organic materials have yet to be fully understood. This work studies spin injection from ferromagnets into organic semiconductors via spin pumping. Furthermore, work towards thermal spin injection, and detection is presented and discussed. The first part of this thesis comprises the spin pumping experiments. Measuring linewidth broadening of the microwave absorption at f
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2

Díaz, Santiago Sebastián Alejandro. "Controlling Spin Interactions With Electric Currents." Tesis, Universidad de Chile, 2010. http://www.repositorio.uchile.cl/handle/2250/102410.

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3

Wulfhorst, Jeannette [Verfasser]. "Nonlocal spin currents in mesoscopic metallic spin valves / Jeannette Wulfhorst." München : Verlag Dr. Hut, 2012. http://d-nb.info/1028783183/34.

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4

Hahn, Christian. "Magnetization dynamics and pure spin currents in YIG/normal-metal systems." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066657.

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Le domaine de recherche de la spintronique vise a concevoir des dispositifs électroniques misant sur le degré de libre de spin pour transporter de l'information. An d'intégrer ces courants de spin dans des dispositifs électroniques, il est particulièrement intéressant d'étudier l'inter-conversion d'un pur courant de spin en un courant de charge par l'effet Hall de spin, ainsi que le transfert de moment angulaire entre les électrons de conduction d'un métal normal (NM) et l'aimantation d'un ferromagnétique (FM) (couple de transfert de spin / pompage de spin). An de mieux comprendre ces différen
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5

Savero, Torres Williams. "Interplay between pure spin currents and magnetic domain walls." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENY084.

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Ce manuscrit est basé sur l'étude de l'interaction entre des purs courants de spin et parois de domaines magnétiques. Cet étude a été divisée en quatre parties. Dans la première partie, nous avons donné une explication détaillée du transport de spin dans des nano structure métalliques en utilisant trois approches différentes. La deuxième partie est focalisée sur l'utilisation d'un pur courant de spin pour induire le mouvement d'un paroi de domaine. Dans la troisième et quatrième partie nous avons mis en évidence deux nouvelle techniques d'injection et détection de spin en utilisant des parois
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6

Zhang, S., and A. Fert. "Conversion between spin and charge currents with topological insulators." AMER PHYSICAL SOC, 2016. http://hdl.handle.net/10150/622358.

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Injection of a spin current into the surface or interface states of a topological insulator (TI) induces a charge current (inverse Edelstein effect or IEE) and, inversely, a charge current flowing at the surface or interface states of a TI generates a nonzero spin density (Edelstein Effect or EE) from which a spin current can be ejected into an adjacent layer. The parameters characterizing the efficiency of these conversions between spin and charge currents have been derived in recent experiments. By using a spinor distribution function for a momentum-spin locked TI, we determine a number of s
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7

Stagraczyński, Stefan Piotr [Verfasser]. "Magnetic dynamics and spin currents in quantum spin systems strongly coupled to environment / Stefan Piotr Stagraczyński." Halle, 2017. http://d-nb.info/114951289X/34.

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8

Statuto, Nahuel. "Magnetic Excitations Induced by Surface Acoustic Waves and Spin-Polarized Currents." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667710.

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The goal of this thesis is to explore and control the magnetization dynamics on magnetic multilayered thin films through two different techniques: the application of strain and spin- polarized currents, which represent lower-power consumption approaches to the control of magnetization dynamics compared with conventional techniques. The ferromagnetic materials with nanometric thickness used in this thesis are magnetic materials widely used in research. Aside the purely scientific interest, these materials are potentially applicable in telecommunications or technologies for storing and transm
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9

Fransson, Jonas. "Non-Orthogonality and Electron Correlations in Nanotransport : Spin- and Time-Dependent Currents." Doctoral thesis, Uppsala University, Department of Physics, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2687.

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<p>The concept of the transfer Hamiltonian formalism has been reconsidered and generalized to include the non-orthogonality between the electron states in an interacting region, e.g. quantum dot (QD), and the states in the conduction bands in the attached contacts. The electron correlations in the QD are described by means of a diagram technique for Hubbard operator Green functions for non-equilibrium states. </p><p>It is shown that the non-orthogonality between the electrons states in the contacts and the QD is reflected in the anti-commutation relations for the field operat
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10

Caruso, Laure. "Giant magnetoresistance based sensors for local magnetic detection of neuronal currents." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066272/document.

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L'étude de l'activité cérébrale nécessite des enregistrements simultanés à différentes échelles spatiales, d'une cellule unique aux aires corticales du cerveau. Ces mesures fournissent un aperçu sur la relation entre les structures, les fonctions et la dynamique des circuits neuronaux. Les techniques d'électrophysiologie apportent des informations cruciales sur l'activité électrique dans les neurones. Sonder localement la signature magnétique de cette activité donne des informations directes sur les courants neuronaux et la nature vectorielle d'une mesure magnétique renseigne sur la directionn
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