拉什巴效应源于点群对称性的降低

IF 2.9 3区化学 Q3 CHEMISTRY, PHYSICAL Physical Chemistry Chemical Physics Pub Date : 2025-01-21 DOI:10.1039/d4cp04601c

Koshi Okamura

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引用次数: 0

摘要

用点群对称性的约简来描述非磁性凝聚态体系中的Rashba效应。根据时间反转对称性，将波向量k转换为- k的反演、二次旋转和反射对称性被确定为简并态的起源。在整体系统中缺乏这些对称性或在表面系统中破坏这些对称性，然后被确定为非简并状态的起源。评估了表面体系Au（111）、Au（110）和W（110）。在第一性原理计算的基础上，证明了体系统BiTeI存在非简并态。介绍了异质结构GaAs/AlGaAs和自旋霍尔效应的相关问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Rashba effect originates from the reduction of point-group symmetries

The Rashba effect in a nonmagnetic condensed-matter system is described by the reduction of point-group symmetries. The inversion, two-fold rotation, and reflection symmetries transforming the wavevector k to −k are identified as the origin of a degenerate state according to the time-reversal symmetry. The lack of these symmetries in a bulk system or the breaking of these in a surface system is then identified as the origin of a nondegenerate state. The surface systems Au(111), Au(110), and W(110) are assessed. The bulk system BiTeI is demonstrated for the existence of a nondegenerate state on the basis of first-principles calculations. The related issues of the heterostructure GaAs/AlGaAs and the spin Hall effect are also presented.

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来源期刊

Physical Chemistry Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

5.50

自引率

9.10%

发文量

2675

审稿时长

2.0 months

期刊介绍： Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.