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Spin polarization induced by a temperature gradient (heat-current) in a magnetized two-dimensional electron gas (2DEG) with Rashba spin-orbit interaction is considered theoretically within the linear response theory. Using the Matsubara…

Mesoscale and Nanoscale Physics · Physics 2018-08-15 A. Dyrdal , J. Barnas , V. K. Dugaev , J. Berakdar

We observe microwave induced nonlocal resistance in magnetotransport in single and bilayer electronic systems. The obtained results provide evidence for an edge state current stabilized by microwave irradiation due to nonlinear resonances.…

Mesoscale and Nanoscale Physics · Physics 2014-04-23 A. D. Levin , Z. S. Momtaz , G. M. Gusev , A. K. Bakarov

We present a theoretical analysis of the nonlinear bias and temperature dependence of current-voltage characteristics of a spin-valve device which is formed by connecting a quantum dot to two ferromagnetic electrodes whose magnetic moments…

Condensed Matter · Physics 2015-06-25 Baigeng Wang , Jian Wang , Hong Guo

In this paper, current-induced spin polarization for two-dimensional electron gas with a general spin-orbit interaction is investigated. For isotropic energy spectrum, the in-plane current-induced spin polarization is found to be dependent…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 C. M. Wang , H. T. Cui , Q. Lin

The exchange interaction between the conduction electrons and magnetic moments at magnetic interface leads to mutual conversion between electron spin current and magnon current. We introduce a concept of spin convertance which…

Mesoscale and Nanoscale Physics · Physics 2013-02-08 Steven S. -L. Zhang , Shufeng Zhang

The ac conductance of a finite tubular two-dimensional electron gas is studied in the presence of the Rashba spin-orbit interaction. When the tube is coupled to two reservoirs, that interaction splits the steps in the dc current,…

Mesoscale and Nanoscale Physics · Physics 2014-12-24 E. A. Rothstein , B. Horovitz , O. Entin-Wohlman , A. Aharony

Because of the peculiar coupling of spatial and spin degrees of freedom effected by the Rashba spin-orbit interaction, lateral confinement of a two dimensional electronic system leads to a finite transverse spin polarization near the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. Chesi , G. F. Giuliani

Spin effects in a normal two-dimensional (2D) electron gas in lateral contact with a 2D region with spin-orbit interaction are studied. The peculiarity of this system is the presence of spin-dependent scattering of electrons from the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Aleksei A. Sukhanov , Vladimir A. Sablikov , Yurii Ya. Tkach

We identify a "twin-twist" angle in orthorhombic two-dimensional magnets that maximizes interlayer orbital overlap and enables strong interfacial coupling. Focusing on the van der Waals antiferromagnet CrSBr, we show that this twist angle,…

The LAO/STO interface hosts a two-dimensional electron system that is unusually sensitive to the application of an in-plane magnetic field. Low-temperature experiments have revealed a giant negative magnetoresistance (dropping by 70\%),…

Mesoscale and Nanoscale Physics · Physics 2015-07-06 M. Diez , A. M. R. V. L. Monteiro , G. Mattoni , E. Cobanera , T. Hyart , E. Mulazimoglu , N. Bovenzi , C. W. J. Beenakker , A. D. Caviglia

We have described the electron spin dynamics in the presence of Rashba spin- orbit interaction and disorder using the spin-density matrix method. We showed that in the Born approximation in the scattering amplitude the spin current is zero…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Alexander Khaetskii

Reports of emergent conductivity, superconductivity, and magnetism at oxide interfaces have helped to fuel intense interest in their rich physics and technological potential. Here we employ magnetic force microscopy to search for…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Feng Bi , Mengchen Huang , Chung-Wung Bark , Sangwoo Ryu , Chang-Beom Eom , Patrick Irvin , Jeremy Levy

We investigate intersubband mixing effects in multichannel quantum wires in the presence of Rashba spin-orbit coupling and attached to two terminals. When the contacts are ferromagnetic and their magnetization direction is perpendicular to…

Mesoscale and Nanoscale Physics · Physics 2010-04-29 M. M. Gelabert , Llorens Serra , David Sanchez , Rosa Lopez

A two dimensional hopping system with Rashba spin-orbit interaction is considered. Our main interest is concerned with the evolution of the spin degree of freedom of the electrons. We derive the rate equations governing the evolution of the…

Condensed Matter · Physics 2009-11-10 T. Damker , H. Boettger , V. V. Bryksin

We consider a quasi one-dimensional configuration consisting of two small pieces of ferromagnetic material separated by a metallic one and contacted by two metallic leads. A spin-polarized current is injected from one lead. Our goal is to…

Mesoscale and Nanoscale Physics · Physics 2007-06-13 J. Peguiron , M. -S. Choi , C. Bruder

We apply an analysis of time-dependent spin-polarized current in a semiconductor channel at room temperature to establish how the magnetization configuration and dynamics of three ferromagnetic terminals, two of them biased and third…

Mesoscale and Nanoscale Physics · Physics 2008-02-20 L. Cywinski , H. Dery , L. J. Sham

Electric current-induced magnetoresistance oscillations recently discovered in two-dimensional electron systems are analyzed using a microscopic scheme for nonlinear magnetotransport direct controlled by the current. The magnetoresistance…

Mesoscale and Nanoscale Physics · Physics 2007-09-18 X. L. Lei

In systems with strong spin-orbit coupling, the relationship between spin-transfer torque and the divergence of the spin current is generalized to a relation between spin transfer torques, total angular momentum current, and mechanical…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Paul M. Haney , M. D. Stiles

For the first time magnetrotransport of the ferromagnetic high-pressure phases of (GaSb)$_2$M (M=Cr,Mn) was measured. It was found that the main component of magnetotransport in these phases is negative and its amplitude is increasing with…

Materials Science · Physics 2021-11-30 A. A. Pronin , M. V. Kondrin , V. R. Gizatullin , O. A. Sazanova , A. G. Lyapin , S. V. Popova

We investigate the domain wall dynamics of a ferromagnetic wire under the combined influence of a spin-polarized current and magnonic spin-transfer torque generated by an external field, taking also into account Rashba spin-orbit coupling…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Jacob Linder
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