Nonexistence of intrinsic spin currents

被引：100

作者：

Khaetskii, A ^{[1
]}

机构：

[1] Univ Munich, Dept Phys, D-80333 Munich, Germany

[2] Univ Munich, Ctr Nanosci, D-80333 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.96.056602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We describe the electron spin dynamics in the presence of Rashba spin-orbit interaction and disorder using the spin-density matrix method. We show that in the Born approximation in the scattering amplitude the spin current is zero for an arbitrary ratio of the spin-orbit splitting and the scattering rate. Various types of the disorder potential are studied. We argue that the bulk spin current always depends explicitly on scattering by impurities. In this sense universal intrinsic spin current does not exist.

引用

页数：4

共 21 条

[1]

[Anonymous], QUANTUM MECH

[2] Theory of spin-charge-coupled transport in a two-dimensional electron gas with Rashba spin-orbit interactions -: art. no. 155308 [J].