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北美退伍军人节(Veterans Day),12 日无更新
arXiv 0904.1999cond-mat.mes-hall
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自旋轨道耦合系统中的半经典自旋输运

Semiclassical spin transport in spin-orbit-coupled systems

Dimitrie Culcer

摘要:

这篇文章讨论了自旋轨道相互作用系统中的自旋输运,以及如何在半经典图像中理解它。我将首先介绍自旋输运的半经典波包描述,它解释了载流子的微观运动如何产生自旋流。由于自旋不守恒,自旋流的定义具有一定的任意性。第二部分从密度矩阵的角度简要介绍了自旋输运和自旋进动之间的关系以及散射的重要作用。

英文摘要:

This article discusses spin transport in systems with spin-orbit interactions and how it can be understood in a semiclassical picture. I will first present a semiclassical wave-packet description of spin transport, which explains how the microscopic motion of carriers gives rise to a spin current. Due to spin non-conservation the definition of the spin current has some arbitrariness. In the second part I will briefly review the physics from a density matrix point of view, which makes clear the relationship between spin transport and spin precession and the important role of scattering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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