Spin splitting modulated by uniaxial stress in InAs nanowires

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	Spin splitting modulated by uniaxial stress in InAs nanowires
	Liu GH (Liu Genhua) ; Chen YH (Chen Yonghai) ; Jia CH (Jia Caihong) ; Hao GD (Hao Guo-Dong) ; Wang ZG (Wang Zhanguo)
刊名	journal of physics-condensed matter
	2011
卷号	23 期号:1 页码:art. no. 015801
关键词	NARROW-GAP SEMICONDUCTOR INVERSION-ASYMMETRY QUANTUM DOTS BAND STATES
通讯作者	liu, gh, chinese acad sci, inst semicond, key lab semicond mat sci, pob 912, beijing 100083, peoples r china. yhchen@red.semi.ac.cn
合作状况	国内
英文摘要	we theoretically study the electronic structure, spin splitting, effective mass, and spin orientation of inas nanowires with cylindrical symmetry in the presence of an external electric field and uniaxial stress. using an eight-band k center dot p theoretical model, we deduce a formula for the spin splitting in the system, indicating that the spin splitting under uniaxial stress is a nonlinear function of the momentum and the electric field. the spin splitting can be described by a linear rashba model when the wavevector and the electric field are sufficiently small. our numeric results show that the uniaxial stress can modulate the spin splitting. with the increase of wavevector, the uniaxial tensile stress first restrains and then amplifies the spin splitting of the lowest electron state compared to the no strain case. the reverse is true under a compression. moreover, strong spin splitting can be induced by compression when the top of the valence band is close to the bottom of the conductance band, and the spin orientations of the electron stay almost unchanged before the overlap of the two bands.; submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-12-28t00:58:42z no. of bitstreams: 1 spin splitting modulated by uniaxial stress in inas nanowires.pdf: 796736 bytes, checksum: c287652d16a65d5e08daddb5a14551c5 (md5); approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-12-28t01:00:21z (gmt) no. of bitstreams: 1 spin splitting modulated by uniaxial stress in inas nanowires.pdf: 796736 bytes, checksum: c287652d16a65d5e08daddb5a14551c5 (md5); made available in dspace on 2010-12-28t01:00:21z (gmt). no. of bitstreams: 1 spin splitting modulated by uniaxial stress in inas nanowires.pdf: 796736 bytes, checksum: c287652d16a65d5e08daddb5a14551c5 (md5) previous issue date: 2011; the work was supported by the 973 program (2006cb604908, 2006cb921607), and the national natural science foundation of china (60625402, 60990313).; 国内
学科主题	半导体材料
收录类别	SCI
资助信息	the work was supported by the 973 program (2006cb604908, 2006cb921607), and the national natural science foundation of china (60625402, 60990313).
语种	英语
公开日期	2010-12-28
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/20686]
专题	半导体研究所_中科院半导体材料科学重点实验室
推荐引用方式 GB/T 7714	Liu GH ,Chen YH ,Jia CH ,et al. Spin splitting modulated by uniaxial stress in InAs nanowires[J]. journal of physics-condensed matter,2011,23(1):art. no. 015801.
APA	Liu GH ,Chen YH ,Jia CH ,Hao GD ,&Wang ZG .(2011).Spin splitting modulated by uniaxial stress in InAs nanowires.journal of physics-condensed matter,23(1),art. no. 015801.
MLA	Liu GH ,et al."Spin splitting modulated by uniaxial stress in InAs nanowires".journal of physics-condensed matter 23.1(2011):art. no. 015801.