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We study the tunneling of conduction electrons through a (110)-oriented single-barrier heterostructure grown from III-V semiconductor compounds. It is shown that, due to low spatial symmetry of such a barrier, the tunneling current through…

介观与纳米尺度物理 · 物理学 2015-06-18 P. S. Alekseev , M. M. Glazov , S. A. Tarasenko

We consider the electronic transport through a Rashba quantum dot coupled to ferromagnetic leads. We show that the interference of localized electron states with resonant electron states leads to the appearance of the Fano-Rashba effect.…

介观与纳米尺度物理 · 物理学 2009-11-13 P. A. Orellana , M. Amado , F. Dominguez-Adame

We study a model of an electron on a cylindrical surface, which is coupled to the torsion field due to a dislocation along the axis of the cylinder. We discuss the effect of this torsion field on the energy spectrum of the electrons and…

强关联电子 · 物理学 2015-06-23 Debabrata Sinha

A possibility of controlled manipulation of electron spin states has been investigated for a cylindrical two-dimensional electron gas confined in a semiconductor nanotube/cylindrical nanowire with the Rashba spin-orbit interaction. We…

介观与纳米尺度物理 · 物理学 2014-04-03 P. Wójcik , J. Adamowski , M. Wołoszyn , B. J. Spisak

We investigate the electron transport through a two-dimensional semiconductor with a nonuniform Rashba spin-orbit interaction. Due to the combination of the coherence effect and the Rashba interaction, a spontaneous spin-polarized current…

介观与纳米尺度物理 · 物理学 2009-11-10 Qing-feng Sun , X. C. Xie

We investigate the longitudinal spin relaxation arising due to spin-flip transitions accompanied by phonon emission in quantum dots where the strength of the Rashba spin-orbit coupling is a random function of the lateral (in-plane)…

无序系统与神经网络 · 物理学 2009-11-11 E. Ya. Sherman , D. J. Lockwood

We study the electron spin relaxation in both symmetric and asymmetric GaAs/AlGaAs quantum wells (QWs) grown on (110) substrates in an external magnetic field B applied along the QW normal. The spin polarization is induced by circularly…

介观与纳米尺度物理 · 物理学 2015-06-18 G. Wang , A. Balocchi , A. V. Poshakinskiy , C. R. Zhu , S. A. Tarasenko , T. Amand , B. L. Liu , X. Marie

We investigate theoretically the spin-dependent electron transport in a Rashba quantum wire with rough edges. The charge and spin conductances are calculated as function of the electron energy or the wire length by adopting the spinresolved…

介观与纳米尺度物理 · 物理学 2012-09-06 Xianbo Xiao , Huili Li , Guanghui Zhou , Nianhua Liu

We analyze equilibrium spin currents in a 2D electron gas with Rashba spin-orbit interaction (Rashba medium). In a uniform Rashba medium these currents are constant, and their ability to really transport spin is not evident. But even weak…

介观与纳米尺度物理 · 物理学 2009-11-13 E. B. Sonin

Our recent study [Phys. Rev. B 103, 085309 (2021)] verified the existence of $\bf{k}$-linear Rashba spin-orbit coupling (SOC) of two-dimensional hole gases in quantum wells (QWs) which originates from a combination of heavy-hole-light-hole…

介观与纳米尺度物理 · 物理学 2022-03-17 Jia-Xin Xiong , Shan-Guan , Jun-Wei Luo , Shu-Shen Li

We studied the electric current induced in a two-dimensional electron gas by the spin current, in the presence of Rashba and cubic Dresselhaus spin-orbit interactions. We found out that the factor relating these currents is not universal,…

介观与纳米尺度物理 · 物理学 2015-06-03 L. Y. Wang , A. G. Mal'shukov , C. S. Chu

Spin current is a central theme in spintronics, and its generation is a keen issue. The spin-polarized current injection from the ferromagnet, spin battery, and spin Hall effect have been used to generate spin current, but Ohmic currents in…

超导电性 · 物理学 2019-11-05 James Jun He , Kanta Hiroki , Keita Hamamoto , Naoto Nagaosa

Spin polarization of a two-dimensional electron gas with Rashba spin-orbit interaction, induced by a thermo-current, is considered theoretically. It is shown that a temperature gradient gives rise to an in-plane spin polarization of the…

介观与纳米尺度物理 · 物理学 2013-08-27 A. Dyrdał , M. Inglot , V. K. Dugaev , J. Barnaś

The one-dimensional effective Hamiltonian for a planar curvilinear quantum wire with arbitrary shape is proposed in the presence of the Rashba spin-orbit interaction. Single electron propagation through a device of two straight lines…

介观与纳米尺度物理 · 物理学 2015-03-13 Erhu Zhang , Shengli Zhang , Qi Wang

We study the pseudospin and spin dynamical effects in single-layer silicene due to a perpendicular electric field periodically driven and its interplay with the intrinsic and extrinsic (Rashba) spin-orbit interaction. We find that the spin…

介观与纳米尺度物理 · 物理学 2018-08-15 Alexander Lopez , Francisco Mireles , John Schliemann , Benjamin Santos

The spatial separation of electron spins followed by the control of their individual spin dynamics has recently emerged as an essential ingredient in many proposals for spin-based technologies because it would enable both of the two spin…

Based on quantum-kinetic equations, coupled spin-charge drift-diffusion equations are derived for a two-dimensional electron gas on a cylindrical surface. Besides the Rashba and Dresselhaus spin-orbit interaction, the elastic scattering on…

材料科学 · 物理学 2008-08-04 P. Kleinert

We describe the simultaneous effects of the spin-orbit (SO) perturbation and a magnetic field $B$ on a disk shaped quantum dot (QD). {As it is known the} combination of electrostatic forces among the $N$ electrons confined in the QD and the…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Bellucci , P. Onorato

We study the effect of the Rashba spin-orbit coupling on the Fermi arcs of topological Dirac semimetals. The Rashba coupling is induced by breaking the inversion symmetry at the surface. Remarkably, this coupling could be enhanced by the…

介观与纳米尺度物理 · 物理学 2021-02-12 Yuriko Baba , Francisco Domínguez-Adame , Gloria Platero , Rafael A. Molina

The drift-diffusion formalism for spin-polarized carrier transport in semiconductors is generalized to include spin-orbit coupling. The theory is applied to treat the extrinsic spin Hall effect using realistic boundary conditions. It is…

介观与纳米尺度物理 · 物理学 2009-11-11 Wang-Kong Tse , J. Fabian , I. Zutic , S. Das Sarma