Nonlinear Rashba model and spin relaxation in quantum wells

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	Nonlinear Rashba model and spin relaxation in quantum wells
	Yang W (Yang W.) ; Chang K (Chang Kai)
刊名	physical review b
	2006
卷号	74 期号:19 页码:art.no.193314
关键词	2-DIMENSIONAL ELECTRON ORBIT INTERACTION GATE CONTROL HETEROSTRUCTURES APPROXIMATION SPINTRONICS ANISOTROPY SYSTEMS DEVICE
ISSN号	1098-0121
通讯作者	chang, k, chinese acad sci, inst semicond, sklsm, pob 912, beijing 100083, peoples r china. e-mail: kchang@red.semi.ac.cn
中文摘要	we find that the rashba spin splitting is intrinsically a nonlinear function of the momentum, and the linear rashba model may overestimate it significantly, especially in narrow-gap semiconductors. a nonlinear rashba model is proposed, which is in good agreement with the numerical results from the eight-band k center dot p theory. using this model, we find pronounced suppression of the d'yakonov-perel' spin relaxation rate at large electron densities, and a nonmonotonic dependence of the resonance peak position of the electron spin lifetime on the electron density in [111]-oriented quantum wells, both in qualitative disagreement with the predictions of the linear rashba model.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-04-11
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/10246]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Yang W ,Chang K . Nonlinear Rashba model and spin relaxation in quantum wells[J]. physical review b,2006,74(19):art.no.193314.
APA	Yang W ,&Chang K .(2006).Nonlinear Rashba model and spin relaxation in quantum wells.physical review b,74(19),art.no.193314.
MLA	Yang W ,et al."Nonlinear Rashba model and spin relaxation in quantum wells".physical review b 74.19(2006):art.no.193314.