Persistent spin current in a quantum-dot ring with Rashba spin-orbit coupling

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	Persistent spin current in a quantum-dot ring with Rashba spin-orbit coupling
	G. Y. Yi; Y. Han; W. J. Gong; H. N. Wu; G. Z. Wei
	2009
发表期刊	Physics Letters A
ISSN	0375-9601
卷号	373 期号:18-19 页码:1672-1678
摘要	By means of the non-equilibrium Green's function technique, the persistent spin and charge currents in a quantum-dot ring are theoretically investigated. We find that by introducing local spin-orbit interaction on an individual quantum dot, a pure persistent spin current can be induced even in the absence of external magnetic flux and magnetic material. Compared with persistent spin current in the quantum ring, the magnitude and direction of the persistent spin current can be controlled experimentally by means of adjusting the energy levels of quantum dots. In addition, a certain spin component of the persistent current can be suppressed by introducing an external magnetic flux. (c) 2009 Elsevier B.V. All rights reserved.
部门归属	[yi, guangyu; han, yu; gong, weijiang; wu, haina; wei, guozhu] northeastern univ, coll sci, shenyang 110006, peoples r china. [han, yu] liaoning univ, dept phys, shenyang 110036, peoples r china. [wei, guozhu] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;wei, gz (reprint author), northeastern univ, coll sci, shenyang 110006, peoples r china;guozhuwei02@sina.com
关键词	Quantum-dot Ring Green's Function Persistent Spin Current Phase-factors Berrys Phase Loop Transport Single
URL	查看原文
WOS记录号	WOS:000269486700015
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32503
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. Y. Yi,Y. Han,W. J. Gong,et al. Persistent spin current in a quantum-dot ring with Rashba spin-orbit coupling[J]. Physics Letters A,2009,373(18-19):1672-1678.
APA	G. Y. Yi,Y. Han,W. J. Gong,H. N. Wu,&G. Z. Wei.(2009).Persistent spin current in a quantum-dot ring with Rashba spin-orbit coupling.Physics Letters A,373(18-19),1672-1678.
MLA	G. Y. Yi,et al."Persistent spin current in a quantum-dot ring with Rashba spin-orbit coupling".Physics Letters A 373.18-19(2009):1672-1678.