准一维空穴自旋轨道规范场调制的电荷输运
Charge transport by modulating spin-orbit gauge fields for quasi-onedimensional holes
摘要：
本文从理论上研究了准一维空穴系统中零场自旋分裂的绝热时间变化引起的交流电荷输运（例如，在量子线或点接触中）。在传导电子系统中，部分电流来自自旋相关的电动势。我们发现，这种电流的贡献的大小是两个数量级更大的孔，并表现出参数依赖性，使其更容易获得实验。我们的研究结果表明，空穴结构是很好的候选人实现设备的自旋电流泵随时间变化的电场。
英文摘要：
We present a theoretical study of ac charge transport arising from adiabatic temporal variation of zero-field spin splitting in a quasi-onedimensional hole system (realized, e.g., in a quantum wire or point contact). As in conduction-electron systems, part of the current results from spin-dependent electromotive forces. We find that the magnitude of this current contribution is two orders of magnitude larger for holes and exhibits parametric dependences that make it more easily accessible experimentally. Our results suggest hole structures to be good candidates for realizing devices where spin currents are pumped by time-varying electric fields.
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