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Manipulating the electron spin with the aid of spin-orbit coupling (SOC) is an indispensable element of spintronics. Electrostatically gating a material with strong SOC results in an effective magnetic field which can in turn be used to…

Experimental investigations of spin-charge interconversion in magnetic bilayers comprising a ferromagnet adjacent to a topological insulator have reported scattered results on the spin-charge and charge-spin conversion efficiency.…

介观与纳米尺度物理 · 物理学 2024-01-10 Aurelien Manchon , Shuyuan Shi , Hyunsoo Yang

Spin-orbit torque (SOT) has been extensively studied as a key mechanism in spintronics applications. However, conventional SOT materials limit the spin polarization direction to the in-plane orientation, which is suboptimal for efficient…

介观与纳米尺度物理 · 物理学 2025-03-20 Yifei Yang , Jian-Ping Wang

We explain how Rashba spin-orbit coupling (SOC) in a two-dimensional electron gas (2DEG), or in a conventional $s$-wave superconductor, can lead to a large magnetoresistance even with one ferromagnet. However, such enhanced…

介观与纳米尺度物理 · 物理学 2023-08-15 Chenghao Shen , Ranran Cai , Alex Matos-Abiague , Wei Han , Jong E. Han , Igor Zutic

Injection of unpolarized charge current through the longitudinal leads of a four-terminal two-dimensional electron gas with the Rashba spin-orbit (SO) coupling and/or SO scattering off extrinsic impurities is responsible not only for the…

介观与纳米尺度物理 · 物理学 2008-11-06 R. L. Dragomirova , L. P. Zarbo , B. K. Nikolic

Nonlinear spintronics combines nonlinear dynamics with spintronics, opening up new possibilities beyond linear responses. A recent theoretical work [Xiao et al., Phys. Rev. Lett. 130, 166302 (2023)] predicts the nonlinear generation of spin…

材料科学 · 物理学 2024-01-30 Insu Baek , Seungyun Han , Suik Cheon , Hyun-Woo Lee

The emergent induction of spiral magnets that was proposed [Jpn. J. Appl. Phys. 58, 120909 (2019)] and recently demonstrated [Nature 586, 232 (2020)] is shown to be further extended by a comprehensive treatment of the Rashba spin-orbit…

介观与纳米尺度物理 · 物理学 2021-03-05 Jun'ichi Ieda , Yuta Yamane

Using the linear response formalism for the spin-orbit torque (SOT) we compute from first principles the SOT in a system of two layers of L1$_0$-FePt(001) deposited on an fcc Pt(001) substrate of varying thickness. We find that at room…

材料科学 · 物理学 2015-06-22 Guillaume Géranton , Frank Freimuth , Stefan Blügel , Yuriy Mokrousov

We investigate the response of the Rashba spin-orbit system to a time-periodic scalar potential, in order to determine whether an induced magnetization exists. We approach this by employing the Floquet-Green function method within the…

介观与纳米尺度物理 · 物理学 2026-03-18 Malen Etxeberria-Etxaniz , Andrés Arnau , Asier Eiguren

We study the spin relaxation torque in nonmagnetic or ferromagnetic metals with nonuniform spin-orbit coupling within the Keldysh Green's function formalism. In non-magnet, the relaxation torque is shown to arise when the spin-orbit…

介观与纳米尺度物理 · 物理学 2015-06-03 Kazuhiro Tsutsui , Akihito Takeuchi , Gen Tatara , Shuichi Murakami

Recent studies have shown that the non-relativistic antiferromagnetic ordering could generate momentum-dependent spin splitting analogous to the Rashba effect, but free from the requirement of relativistic spin-orbit coupling. Whereas the…

材料科学 · 物理学 2021-06-16 Lin-Ding Yuan , Zhi Wang , Jun-Wie Luo , Alex Zunger

The gate-controlled electron spin interference was observed in nanolithographically defined square loop (SL) arrays fabricated using In$_{0.52}$Al$_{0.48}$As/In$_{0.53}$Ga$_{0.47}$As/In$_{0.52}$Al$_{0.48}$As quantum wells. In this…

介观与纳米尺度物理 · 物理学 2009-11-11 Takaaki Koga , Yoshiaki Sekine , Junsaku Nitta

Substantial understanding of spin-orbit interactions in heavy-metal (HM)/ferromagnet (FM) heterostructures is crucial in developing spin-orbit torque (SOT) spintronics devices utilizing spin Hall and Rashba effects. Though the study of SOT…

材料科学 · 物理学 2017-09-13 Christian Engel , Sarjoosing Goolaup , Feilong Luo , Wen Siang Lew

Altermagnets exhibit momentum-dependent spin splitting despite having zero net magnetization. This enables a spin-splitter effect in which an external electric field generates transverse spin currents by separating oppositely polarized…

介观与纳米尺度物理 · 物理学 2026-02-27 Sanjay Sarkar , Sayan Sarkar , Amit Agarwal

We provide a general procedure to calculate the current-induced spin-transfer torque which acts on a general steep magnetic texture due to the exchange interaction with an applied spin-polarized current. As an example, we consider a…

介观与纳米尺度物理 · 物理学 2016-01-20 Martin Stier , Michael Thorwart

Rashba spin-orbit coupling appears in 2D systems lacking inversion symmetry, and causes the spin-splitting of otherwise degenerate energy bands into an upper and lower helicity band. In this paper, we explore how impurity scattering affects…

介观与纳米尺度物理 · 物理学 2018-11-26 Joel Hutchinson , Joseph Maciejko

Spin-orbit interaction (SOI) has been a key tool to steer and manipulate spin-dependent transport properties in two-dimensional electron gases. Here we demonstrate how spin currents can be created and efficiently read out in nano- or…

介观与纳米尺度物理 · 物理学 2023-04-05 F. N. Gürsoy , P. Reck , C. Gorini , K. Richter , I. Adagideli

Employing the spin degree of freedom of charge carriers offers the possibility to extend the functionality of conventional electronic devices, while colloidal chemistry can be used to synthesize inexpensive and tuneable nanomaterials. In…

Spin-orbit torques (SOT) allow the electrical control of magnetic states. Current-induced SOT switching of the perpendicular magnetization is of particular technological importance. The SOT consists of damping-like and field-like torques so…

The combination of the time-reversal-symmetric single-particle backscattering field (commonly known as Rashba spin-orbit coupling) and non-backscattering electron interactions is generally expected to produce inelastic backscattering in 1D…

强关联电子 · 物理学 2017-11-01 Maxim Kharitonov , Florian Geissler , Björn Trauzettel