Spin states and persistent currents in mesoscopic rings: Spin-orbit interactions

CORC > 半导体研究所 > 中国科学院半导体研究所 > 中国科学院半导体研究所（2009年前）

	Spin states and persistent currents in mesoscopic rings: Spin-orbit interactions
	Sheng JS ; Chang K
刊名	physical review b
	2006
卷号	74 期号:23 页码:art.no.235315
关键词	QUANTUM RINGS
ISSN号	issn: 1098-0121
通讯作者	chang, k, chinese acad sci, inst semicond, sklsm, pob 912, beijing 100083, peoples r china. 电子邮箱地址: kchang@red.semi.ac.cn
中文摘要	we investigate theoretically electron spin states in one-dimensional and two-dimensional (2d) hard-wall mesoscopic rings in the presence of both the rashba spin-orbit interaction (rsoi) and the dresselhaus spin-orbit interaction (dsoi) in a perpendicular magnetic field. the hamiltonian of the rsoi alone is mathematically equivalent to that of the dsoi alone using an su(2) spin rotation transformation. our theoretical results show that the interplay between the rsoi and dsoi results in an effective periodic potential, which consequently leads to gaps in the energy spectrum. this periodic potential also weakens and smoothens the oscillations of the persistent charge current and spin current and results in the localization of electrons. for a 2d ring with a finite width, higher radial modes destroy the periodic oscillations of persistent currents.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-29
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/9720]
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	Sheng JS,Chang K. Spin states and persistent currents in mesoscopic rings: Spin-orbit interactions[J]. physical review b,2006,74(23):art.no.235315.
APA	Sheng JS,&Chang K.(2006).Spin states and persistent currents in mesoscopic rings: Spin-orbit interactions.physical review b,74(23),art.no.235315.
MLA	Sheng JS,et al."Spin states and persistent currents in mesoscopic rings: Spin-orbit interactions".physical review b 74.23(2006):art.no.235315.