Spin states and persistent currents in a quantum ring with an embedded magnetic impurity

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	Spin states and persistent currents in a quantum ring with an embedded magnetic impurity
	Sheng JS ; Chang K
刊名	journal of physics-condensed matter
	2008
卷号	20 期号:2 页码:art. no. 025222
关键词	D EXCHANGE INTERACTION
ISSN号	0953-8984
通讯作者	sheng, js, 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	spin states and persistent currents are investigated theoretically in a quantum ring with an embedded magnetic ion under a uniform magnetic field including the spin-orbit interactions. the magnetic impurity acts as a spin-dependent delta-potential for electrons and results in gaps in the energy spectrum, consequently suppressing the oscillation of the persistent currents. the competition between the zeeman splittings and the s-d exchange interaction leads to a transition of the electron ground state in the ring. the interplay between the periodic potential induced by the rashba and dresselhaus spin-orbit interactions and the delta-potential induced by the magnetic impurity leads to significant variation in the energy spectrum, charge density distribution, and persistent currents of electrons in the ring.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-08
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/6876]
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 a quantum ring with an embedded magnetic impurity[J]. journal of physics-condensed matter,2008,20(2):art. no. 025222.
APA	Sheng JS,&Chang K.(2008).Spin states and persistent currents in a quantum ring with an embedded magnetic impurity.journal of physics-condensed matter,20(2),art. no. 025222.
MLA	Sheng JS,et al."Spin states and persistent currents in a quantum ring with an embedded magnetic impurity".journal of physics-condensed matter 20.2(2008):art. no. 025222.