Direct detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction: Utilizing the SU(2) symmetry

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	Direct detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction: Utilizing the SU(2) symmetry
	Li J (Li Jun) ; Chang K (Chang Kai)
刊名	physical review b
	2010
卷号	82 期号:3 页码:art. no. 033304
关键词	RELAXATION ANISOTROPY QUANTUM-WELLS SEMICONDUCTORS SYSTEMS
通讯作者	li, j, chinese acad sci, inst semicond, sklsm, pob 912, beijing 100083, peoples r china. 电子邮箱地址: kchang@red.semi.ac.cn
合作状况	其它
英文摘要	we propose a simple method to detect the relative strength of rashba and dresselhaus spin-orbit interactions in quantum wells (qws) without relying on the directional-dependent physical quantities. this method utilizes the two different critical gate voltages that leading to the remarkable signals of su(2) symmetry, which happens to reflect the intrinsic-structure-inversion asymmetry of the qw. we support our proposal by the numerical calculation of in-plane relaxation times based on the self-consistent eight-band kane model. we find that the two different critical gate voltages leading to the maximum spin-relaxation times [one effect of the su(2) symmetry] can simply determine the ratio of the coefficients of rashba and dresselhaus terms. our proposal can also be generalized to extract the relative strengths of the spin-orbit interactions in quantum-wire and quantum-dot structures.; submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-08-17t02:54:01z no. of bitstreams: 1 physrevb.82.033304.pdf: 228864 bytes, checksum: 1d7127279433152190736b2805f8d7cc (md5); approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-08-17t02:54:56z (gmt) no. of bitstreams: 1 physrevb.82.033304.pdf: 228864 bytes, checksum: 1d7127279433152190736b2805f8d7cc (md5); made available in dspace on 2010-08-17t02:54:56z (gmt). no. of bitstreams: 1 physrevb.82.033304.pdf: 228864 bytes, checksum: 1d7127279433152190736b2805f8d7cc (md5) previous issue date: 2010; this work is supported by the nsfc under grants no. 60525405 and no. 10874175, and national basic research program of china (973 program) (grant no. 2010cb933700).; 其它
学科主题	半导体物理
收录类别	SCI
资助信息	this work is supported by the nsfc under grants no. 60525405 and no. 10874175, and national basic research program of china (973 program) (grant no. 2010cb933700).
语种	英语
公开日期	2010-08-17 ; 2010-10-15
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/13495]
专题	半导体研究所_半导体超晶格国家重点实验室
推荐引用方式 GB/T 7714	Li J ,Chang K . Direct detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction: Utilizing the SU(2) symmetry[J]. physical review b,2010,82(3):art. no. 033304.
APA	Li J ,&Chang K .(2010).Direct detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction: Utilizing the SU(2) symmetry.physical review b,82(3),art. no. 033304.
MLA	Li J ,et al."Direct detection of the relative strength of Rashba and Dresselhaus spin-orbit interaction: Utilizing the SU(2) symmetry".physical review b 82.3(2010):art. no. 033304.