Ab initio calculation of the intrinsic spin Hall effect in semiconductors

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	Ab initio calculation of the intrinsic spin Hall effect in semiconductors
	Guo, GY ; Yao, Y ; Niu, Q
刊名	PHYSICAL REVIEW LETTERS
	2005
卷号	94 期号:22
关键词	MANIPULATION
ISSN号	0031-9007
通讯作者	Guo, GY: Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan.
中文摘要	Off-diagonal long-range order (ODLRO) which is believed to be one characteristic of superconductivity is a quantum phenomenon not describable in classical mechanical terms. The quantum state constructed by eta-pairing demonstrates ODLRO. Entanglement is a key concept of the quantum information processing and has no classical counterpart. We study the entanglement property of the eta-pairing quantum state by concurrence and entropy which are two measures of the entanglement. We show that the concurrence of entanglement between one-site and the rest sites is exactly the correlation function of the ODLRO for the eta-pairing state in the thermodynamic limit. So, when the eta-pairing state is entangled, it demonstrates ODLRO and is thus in the superconducting phase, if it is a separable state, there is no ODLRO. In the thermodynamical limit, the entanglement between the M-site and other sites of the eta-pairing state does not vanish. Other types of ODLRO of the eta-pairing state are presented. We show that the behaviour of the ODLRO correlation functions is equivalent to that of the entanglement of the eta-pairing state. The scaling of the entropy of the entanglement for the eta-pairing state is studied.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33374]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Guo, GY,Yao, Y,Niu, Q. Ab initio calculation of the intrinsic spin Hall effect in semiconductors[J]. PHYSICAL REVIEW LETTERS,2005,94(22).
APA	Guo, GY,Yao, Y,&Niu, Q.(2005).Ab initio calculation of the intrinsic spin Hall effect in semiconductors.PHYSICAL REVIEW LETTERS,94(22).
MLA	Guo, GY,et al."Ab initio calculation of the intrinsic spin Hall effect in semiconductors".PHYSICAL REVIEW LETTERS 94.22(2005).