二维电子气之间自旋轨道相互作用诱导的卡西米尔-利夫希兹力矩

IF 6.4 1区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Science China Physics, Mechanics & Astronomy Pub Date : 2024-07-11 DOI:10.1007/s11433-024-2399-7

Jia-Nan Rong, Liang Chen, Kai Chang

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引用次数: 0

摘要

我们以量子场论为基础，从理论上研究了具有拉什巴和德雷斯豪斯自旋轨道相互作用（SOIs）的两个平行二维电子气（2DEGs）之间的卡西米尔相互作用。我们推导出了极化张量的解析表达式，并获得了电磁（EM）场运动方程的解。我们计算了具有拉什巴和德雷斯豪斯 SOIs 的两个平行二维电子元件之间的卡西米尔-利夫希兹力矩（CLT），它可以通过改变两个 SOIs 之间的相对强度来调整。二维电子元件的 SOI 之间的相互作用所产生的二维电子元件之间的各向异性卡西米尔能为 CLT 和新型光电器件提供了新的来源。

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Spin-orbit interaction induced Casimir-Lifshitz torque between two-dimensional electron gases

We investigate theoretically the Casimir interaction between two parallel two-dimensional electron gases (2DEGs) with Rashba and Dresselhaus spin-orbit interactions (SOIs), based on the quantum field theory. We derive an analytical expression for the polarization tensor and obtain the solution to the motion equation of the electromagnetic (EM) field. We calculate the Casimir-Lifshitz torque (CLT) between two parallel 2DEGs with Rashba and Dresselhaus SOIs, which can be tuned by changing the relative strength between two SOIs. The anisotropic Casimir energy between 2DEGs caused by the interplay between the SOIs of 2DEGs offers a new origin of CLT and a new type of optoelectronic device.

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来源期刊

Science China Physics, Mechanics & Astronomy PHYSICS, MULTIDISCIPLINARY-

CiteScore

10.30

自引率

6.20%

发文量

4047

审稿时长

3 months

期刊介绍： Science China Physics, Mechanics & Astronomy, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Physics, Mechanics & Astronomy, is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Reviews summarize representative results and achievements in a particular topic or an area, comment on the current state of research, and advise on the research directions. The author’s own opinion and related discussion is requested. Research papers report on important original results in all areas of physics, mechanics and astronomy. Brief reports present short reports in a timely manner of the latest important results.