由于Rashba耦合和Zitterbewegung的自旋相关焦耳加热
Spin Dependent Joule Heating due to Rashba Coupling and Zitterbewegung
摘要：
研究了外磁场作用下非对称硅量子阱的微波吸收，发现了自旋共振焦耳热的自旋相关分量。我们解释这种效应的Rashba自旋轨道耦合，导致在电流诱导的自旋进动和Zitterbewegung。证据是基于一个特定的电子自旋共振线的形状和它的振幅上的实验几何形状，在一定范围内，这表明一个“负”差分功率吸收的观察。
英文摘要：
Investigating microwave absorption in asymmetric Si quantum wells in an external magnetic field, we discover a spin dependent component of Joule heating at spin resonance. We explain this effect in terms of Rashba spin-orbit coupling which results in a current induced spin precession and Zitterbewegung. Evidence is based on the observation of a specific dependence of the electron spin resonance line shape and its amplitude on the experimental geometry which in some range suggests a "negative" differential power absorption.
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