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Electron skew scattering by impurities is one of the major mechanisms behind the anomalous Hall effect in ferromagnetic nanostructures. It is particularly strong at the surface of topological insulators where electron dynamics is governed…

介观与纳米尺度物理 · 物理学 2024-08-30 Cooper Finnigan , Dmitry K. Efimkin

The quantum conductance of one-dimensional (1D) circuits built on flat (Euclidean) two-dimensional electron gases (2DEGs) is known to display a symmetric response to the inversion of Rashba spin-orbit coupling fields in Aharonov-Casher (AC)…

介观与纳米尺度物理 · 物理学 2025-11-20 E. J. Rodríguez , A. A. Reynoso , J. P. Baltanás , D. Bercioux , D. Frustaglia

Spin distribution in the diffraction pattern of two-dimensional electron gas by a split gate and a quantum point contact is computed in the presence of the spin-orbit coupling. After diffracted, the component of spin perpendicular to the…

介观与纳米尺度物理 · 物理学 2015-05-27 Cheng-Ju Lin , Chyh-Hong Chern

Spin drag measurements were performed in a two-dimensional electron system set close to the crossed spin helix regime and coupled by strong intersubband scattering. In a sample with uncommon combination of long spin lifetime and high charge…

介观与纳米尺度物理 · 物理学 2017-07-05 M. Luengo-Kovac , F. C. D. Moraes , G. J. Ferreira , A. S. L. Ribeiro , G. M. Gusev , A. K. Bakarov , V. Sih , F. G. G. Hernandez

Graphene consists in a single-layer carbon crystal where 2$p_z$ electrons display a linear dispersion relation in the vicinity of the Fermi level, conveniently described by a massless Dirac equation in $2+1$ spacetime. Spin-orbit effects…

介观与纳米尺度物理 · 物理学 2017-04-04 B. Berche , F. Mireles , E. Medina

We demonstrate that the combined effect of a spatially periodic potential, lateral confinement and spin-orbit interaction gives rise to a quantum ratchet mechanism for spin-polarized currents in two-dimensional coherent conductors. Upon…

介观与纳米尺度物理 · 物理学 2007-11-07 Matthias Scheid , Andreas Pfund , Dario Bercioux , Klaus Richter

The effect of Rashba spin-orbit interaction and anisotropic strain on the electronic, optical and thermodynamic properties of artificial graphene-like superlattice composed of InAs-GaAs quantum dots has been considered theoretically. The…

介观与纳米尺度物理 · 物理学 2019-11-27 Vram Mughnetsyan , Aram Manaselyan , Manuk Barseghyan , Albert Kirakosyan , David Laroze

Spin-charge interconversion is a very active direction in spintronics. Yet, the complex behaviour of some of the most promising systems such as SrTiO$_3$ (STO) interfaces is not fully understood. Here, on the basis of a 6-band…

介观与纳米尺度物理 · 物理学 2022-01-11 D. Q. To , T. H. Dang , L. Vila , J. P. Attané , M. Bibes , H. Jaffrès

Spin-orbit coupling is a source of strong spin dephasing in two- and three-dimensional semiconducting systems. We report that spin dephasing in a two-dimensional electron gas can be suppressed by introducing a quantum point contact.…

介观与纳米尺度物理 · 物理学 2012-01-23 Jae-Seung Jeong , Hyun-Woo Lee

We investigate the twist angle dependence of spin-orbit coupling (SOC) proximity effects and charge-to-spin conversion (CSC) in graphene/WSe$_2$ heterostructures from first principles. The CSC is shown to strongly depend on the twist angle,…

The spin galvanic effect (SGE) describes the conversion of a non-equilibrium spin polarization into a transverse charge current. Recent experiments have demonstrated a large conversion efficiency for the two-dimensional electron gas formed…

介观与纳米尺度物理 · 物理学 2017-12-27 G. Seibold , S. Caprara , M. Grilli , R. Raimondi

We study the spin current injected by spin pumping into single layer graphene and the two-dimensional electron gas (2DEG) with ferromagnetic contacts using scattering theory. The spin currents pumped into graphene are very distinct from…

介观与纳米尺度物理 · 物理学 2016-11-30 Takuya Inoue , Gerrit E. W. Bauer , Kentaro Nomura

We present a theoretical method to calculate the expectation value of spin in an inversion-asymmetric two-dimensional (2D) system with respect to an arbitrarily spin-polarized electron state, injected via an ideal point contact. The 2D…

介观与纳米尺度物理 · 物理学 2007-05-23 Ming-Hao Liu , Ching-Ray Chang

We consider the spin-orbit-induced spin Hall effect and spin swapping in diffusive superconductors. By employing the non-equilibrium Keldysh Green's function technique in the quasiclassical approximation, we derive coupled transport…

介观与纳米尺度物理 · 物理学 2017-02-22 Camilla Espedal , Peter Lange , Severin Sadjina , A. G. Mal'shukov , Arne Brataas

We have studied the spin-orbit interaction in a high mobility two-dimensional electron gas in a GaInAs/InP heterostructure as a function of an applied gate voltage as well as a function of temperature. Highly sensitive magnetotransport…

介观与纳米尺度物理 · 物理学 2009-11-13 Vitaliy A. Guzenko , Thomas Schäpers , Hilde Hardtdegen

We investigate the efficiency of charge-to-spin conversion in two-dimensional Rashba altermagnets, a class of materials that merge characteristics of both ferromagnets and antiferromagnets. Utilizing quantum linear response theory, we…

介观与纳米尺度物理 · 物理学 2024-09-11 Weiwei Chen , Longhai Zeng , W. Zhu

The anomalous spatial shifts at interface scattering, first studied in geometric optics, recently found their counterparts in the electronic context. It was shown that both longitudinal and transverse shifts, analogous to the Goos-Hanchen…

介观与纳米尺度物理 · 物理学 2019-04-11 Zhi-Ming Yu , Ying Liu , Shengyuan A. Yang

We investigate the spin-dependent transport properties of two-dimensional electron gas (2DEG) systems formed in diluted magnetic semiconductors and in the presence of Rashba spin-orbit interaction in the framework of the scattering matrix…

材料科学 · 物理学 2009-11-13 Anh T. Ngo , J. M. Villas-Boas , Sergio E. Ulloa

We present calculations of the frequency-dependent spin susceptibility tensor of a two-dimensional electron gas with competing Rashba and Dresselhaus spin-orbit interaction. It is shown that the interplay between both types of spin-orbit…

介观与纳米尺度物理 · 物理学 2015-05-13 Catalina López-Bastidas , Jesús A. Maytorena , Francisco Mireles

We present a semi-automated computer-assisted method to generate and calculate diagrams in the disorder averaging approach to disordered 2D conductors with intrinsic spin-orbit interaction (SOI). As an application, we calculate the effect…

介观与纳米尺度物理 · 物理学 2009-08-18 Oleg Chalaev , Daniel Loss