RKKY interaction between quantum dot spins tuned by the quantum dot level

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	RKKY interaction between quantum dot spins tuned by the quantum dot level
	Yang M (Yang Mou) ; Li SS (Li Shu-Shen)
刊名	physical review b
	2006
卷号	74 期号:7 页码:art.no.073402
关键词	FERROMAGNETISM
ISSN号	1098-0121
通讯作者	li, ss, ccast, world lab, pob 8730, beijing 100080, peoples r china. e-mail: sslee@red.semi.ac.cn
中文摘要	we have investigated the ruderman-kittel-kasuya-yosida (rkky) interaction between two quantum dot (qd) spins mediated by a two-dimensional electron gas in the simplest case. the oscillation of the rkky interaction versus the distance between the two qds consists of two ingredients with different periods. the rkky interaction undulates with the variation of the singly occupied qd level, which provides us a way to tune the magnitude and the sign of the rkky interaction by pushing the qd level up and down. these conclusions are quite different from the usual result obtained by replacing the s-d exchange interaction with its value at the fermi level. the influence on the rkky interaction brought about under more realistic conditions is also discussed.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-04-11
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/10404]
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	Yang M ,Li SS . RKKY interaction between quantum dot spins tuned by the quantum dot level[J]. physical review b,2006,74(7):art.no.073402.
APA	Yang M ,&Li SS .(2006).RKKY interaction between quantum dot spins tuned by the quantum dot level.physical review b,74(7),art.no.073402.
MLA	Yang M ,et al."RKKY interaction between quantum dot spins tuned by the quantum dot level".physical review b 74.7(2006):art.no.073402.