Generation of spin current and polarization under dynamic gate control of spin-orbit interaction in low-dimensional semiconductor systems

被引：34
|
作者：
Tang, CS
Mal'shukov, AG
Chao, KA
机构：
[1] Natl Ctr Theoret Sci, Div Phys, Hsinchu 30013, Taiwan
[2] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Obast, Russia
[3] Lund Univ, Dept Phys, Solid State Theory Div, S-22362 Lund, Sweden
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.71.195314
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on the Keldysh formalism, the Boltzmann kinetic equation and the drift-diffusion equation have been derived for studying spin-polarization flow and spin accumulation under effect of the time-dependent Rashba spin-orbit interaction in a semiconductor quantum well. The time-dependent Rashba interaction is provided by time-dependent electric gates of appropriate shapes. Several examples of spin manipulation by gates have been considered. Mechanisms and conditions for obtaining the stationary spin density and the induced rectified dc spin current are studied.
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页数：9
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