二维系统中自旋霍尔效应的分类

IF 6.5 2区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Longjun Xiang, Fuming Xu, Luyang Wang, Jian Wang
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引用次数: 0

摘要

通常利用诺依曼原理,根据基础系统的对称性对导电性等物理特性进行分类,从而给出相应特性张量独立分量的数量上限。然而,对于给定的哈密顿,这种全局方法通常无法明确回答自旋霍尔效应(SHE)等物理效应是否存在。研究发现,自旋轨道相互作用(SOIs)的奇偶性和类型是很好的指标,可以进一步减少特定系统自旋霍尔电导率独立分量的数量。根据奇偶性以及各种拉什巴类和德雷斯豪斯类 SOIs,我们提出了一种局部方法来对二维(2D)双波段模型中的自旋霍尔效应进行分类,并提出了在所有二维磁点群中识别自旋霍尔效应存在与否的充分条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Classification of spin Hall effect in two-dimensional systems

Classification of spin Hall effect in two-dimensional systems

Physical properties such as the conductivity are usually classified according to the symmetry of the underlying system using Neumann’s principle, which gives an upper bound for the number of independent components of the corresponding property tensor. However, for a given Hamiltonian, this global approach usually can not give a definite answer on whether a physical effect such as spin Hall effect (SHE) exists or not. It is found that the parity and types of spin-orbit interactions (SOIs) are good indicators that can further reduce the number of independent components of the spin Hall conductivity for a specific system. In terms of the parity as well as various Rashba-like and Dresselhaus-like SOIs, we propose a local approach to classify SHE in two-dimensional (2D) two-band models, where sufficient conditions for identifying the existence or absence of SHE in all 2D magnetic point groups are presented.

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来源期刊
Frontiers of Physics
Frontiers of Physics PHYSICS, MULTIDISCIPLINARY-
CiteScore
9.20
自引率
9.30%
发文量
898
审稿时长
6-12 weeks
期刊介绍: Frontiers of Physics is an international peer-reviewed journal dedicated to showcasing the latest advancements and significant progress in various research areas within the field of physics. The journal's scope is broad, covering a range of topics that include: Quantum computation and quantum information Atomic, molecular, and optical physics Condensed matter physics, material sciences, and interdisciplinary research Particle, nuclear physics, astrophysics, and cosmology The journal's mission is to highlight frontier achievements, hot topics, and cross-disciplinary points in physics, facilitating communication and idea exchange among physicists both in China and internationally. It serves as a platform for researchers to share their findings and insights, fostering collaboration and innovation across different areas of physics.
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