自旋光电流与电流诱导的电子自旋极化——半导体自旋电子学的新进展

Spin photocurrent and current－induced spin polarization——New progress in semiconductor spintronics

摘要: 文章通过自旋光电流与Kerr效应的实验，介绍在自旋-轨道耦合的体系中，如何通过自旋注入来驱动电子的运动产生电流，又如何反过来通过电子的运动或电流在系统中产生自旋激化.实验结果表明，自旋轨道耦合不但给我们提供了对自旋的操控手段，而且还给我们提供了用非磁性材料且无外加磁场条件下作为自旋源的新途径.

Abstract: By using spin photocurrent and Kerr rotation experiments in a spin－orbit coupled system, we demonstrate how the injected spin can drive a current and how a current can conversely induce spin polarization. It proves that the spin－orbit coupling will not only bring us possible ways to manipulate spin, but also provide a new spin source without magnetic material and/or external magnetic field.