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We derive an effective Hamiltonian which describes the dynamics of electrons in the conduction band of transition metal dichalcogenides (TMDC) in the presence of perpendicular electric and magnetic fields. We discuss in detail both the…

介观与纳米尺度物理 · 物理学 2014-03-18 Andor Kormányos , Viktor Zólyomi , Neil D. Drummond , Guido Burkard

The spin-resolved non-equilibrium real-time electron transport through a double-quantum-dot (DQD) Aharonov-Bohm (AB) interferometer with spin-orbit interaction (SOI) is explored. The SOI and AB interference in the real-time dynamics of spin…

介观与纳米尺度物理 · 物理学 2014-10-22 Matisse Wei-Yuan Tu , Amnon Aharony , Wei-Min Zhang , Ora Entin-Wohlman

Spin-orbit coupling provides a versatile tool to generate and to manipulate the spin degree of freedom in low-dimensional semiconductor structures. The spin Hall effect, where an electrical current drives a transverse spin current and…

In chemistry and biochemistry, chirality represents the structural asymmetry characterized by non-superimposable mirror images for a material like DNA. In physics, however, chirality commonly refers to the spin-momentum locking of a…

材料科学 · 物理学 2024-08-07 Binghai Yan

We show that superconducting correlations in the presence of non-zero condensate velocity can mediate the peculiar interaction between localized spins that breaks the global inversion symmetry of magnetic moments. The proposed interaction…

超导电性 · 物理学 2018-11-26 D. S. Rabinovich , I. V. Bobkova , A. M. Bobkov , M. A. Silaev

We study spin-orbital coupling effect on the Josephson current through a superconductor (SC) heterojunction, consisting of two s-wave superconductors and a two-dimensional electron gas (2DEG) layer between them. The Rashba-type (RSOC)…

超导电性 · 物理学 2009-11-13 Z. H. Yang , Y. H. Yang , J. Wang , K. S. Chan

A system exhibiting multiple simultaneously broken symmetries offers the opportunity to influence physical phenomena such as tunneling currents by means of external control parameters. Time-reversal symmetry and inversion symmetry are both…

强关联电子 · 物理学 2007-05-23 J. Linder , M. S. Gronsleth , A. Sudbo

We consider spin-polarized transport in a quantum spin Hall antidot system coupled to normal leads. Due to the helical nature of the conducting edge states, the screening potential at the dot region becomes spin dependent without external…

介观与纳米尺度物理 · 物理学 2014-09-04 Sun-Yong Hwang , Rosa Lopez , Minchul Lee , David Sanchez

Quantum spin-orbital liquids (QSOLs) are a novel phase of matter, similar to quantum spin liquids, with quantum fluctuations in both spin and orbital degrees of freedom. We use non-equilibrium Green's function theory to study…

介观与纳米尺度物理 · 物理学 2021-08-11 Zekun Zhuang , J. B. Marston

Periodic in time spin-Hall current and spin polarization induced by a dc electric bias has been calculated in a superconductor-normal 2DEG-superconductor (SNS) Josephson junction. We assumed that the band energies of electrons in the normal…

超导电性 · 物理学 2015-05-27 A. G. Mal'shukov , C. S. Chu

We present a theoretical study of the effect of spin-filtering on the Josephson and dissipative quasiparticle currents in a superconducting tunnel junction. By combining the quasiclassical Green's functions and the tunneling Hamiltonian…

超导电性 · 物理学 2015-06-05 F. S. Bergeret , A. Verso , A. F. Volkov

We calculate the effect of spin waves on the properties of finite size spin chains with a chiral spin ground state observed on bi-atomic Fe chains deposited on Iridium(001). The system is described with a Heisenberg model supplemented with…

介观与纳米尺度物理 · 物理学 2015-02-09 A. Roldán-Molina , M. J. Santander , Á. S. Núñez , J. Fernández-Rossier

We investigate spin-flip scattering processes of electrons when they pass a chiral interface, which is the boundary between right- and left-handed one-dimensional chain. We construct a minimal $p$-orbital model consisting of the right- and…

介观与纳米尺度物理 · 物理学 2025-05-12 Keita Matsubara , Kazumasa Hattori

We report selective injection of both spin-up and spin-down single electrons into a quantum dot (QD) from spin-polarized non-equilibrium quantum Hall edge channels (ECs) generated by selective transmission of spin-resolved ECs using a…

介观与纳米尺度物理 · 物理学 2015-06-24 Haruki Kiyama , Takashi Nakajima , Soichiro Teraoka , Akira Oiwa , Seigo Tarucha

Conventional spintronic mechanisms, such as spin-transfer and spin-orbit torques based on the spin current, rely on breaking time-reversal symmetry to manipulate magnetic moments. In contrast, for spatially separated dual spin currents, the…

介观与纳米尺度物理 · 物理学 2026-01-01 Gengchen Meng Qi Sun , Zhicheng Xie , Yumin Yang , Yu Zhang , Na Lei , Dahai Wei

A general form of the Hamiltonian for electrons confined to a curved one-dimensional (1D) channel with spin-orbit coupling (SOC) linear in momentum is rederived and is applied to a U-shaped channel. Discretizing the derived continuous 1D…

介观与纳米尺度物理 · 物理学 2011-08-31 Ming-Hao Liu , Jhih-Sheng Wu , Son-Hsien Chen , Ching-Ray Chang

We analyze spin-dependent transport through a spin-diode in the presence of spin-flip and under influence of temperature bias. The current polarization and the spin accumulation are investigated in detail by means of reduced density matrix.…

介观与纳米尺度物理 · 物理学 2012-04-10 M. Bagheri Tagani , H. Rahimpour Soleimani

A pure spin current formed by opposite spins moving in opposite directions is a rank-2 axial tensor which breaks the inversion symmetry. Thus a spin current has a second-order optical susceptibility, with unique polarization-dependence…

其他凝聚态物理 · 物理学 2010-06-30 Jing Wang , Bang-Fen Zhu , Ren-Bao Liu

The spinterface mechanism was suggested as a possible origin for the chirality induced spin-selectivity (CISS) effect, and was used to explain and reproduce, with remarkable accuracy, experimental data from transport experiments showing the…

介观与纳米尺度物理 · 物理学 2024-10-25 Oliver L. A. Monti , Yonatan Dubi

In the present work we propose that a one-dimensional quantum heterostructure composed of magnetic and non-magnetic atomic sites can be utilized as a spin filter for a wide range of applied bias voltage. A simple tight-binding framework is…

介观与纳米尺度物理 · 物理学 2016-09-13 Moumita Dey , Santanu K. Maiti
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