Detection of spinons via spin transport

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	Detection of spinons via spin transport
	Chen, CZ ; Sun, QF ; Wang, F ; Xie, XC
刊名	PHYSICAL REVIEW B
	2013
卷号	88 期号:4
ISSN号	1098-0121
通讯作者	Chen, CZ (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	The existence of deconfined spinons is the defining property of quantum spin liquids. These exotic excitations have a (fractionalized) spin quantum number and no electric charge, and have been proposed to form Fermi surfaces in the recently discovered organic spin liquid candidates. However, direct probes for them are still lacking. Here we propose to experimentally identify the spinons by measuring the spin current flowing through the spin liquid candidate materials, which would be a direct test for the existence of spin-carrying mobile excitations. By the nonequilibrium Green's function technique we evaluate the spin current through the interface between a Mott insulator and a metal under a spin bias, and find that different kinds of Mott insulators, including quantum spin liquids, can be distinguished by different relations between the spin bias and spin current. We also discuss relations to experiments and estimate experimentally relevant parameters.
资助信息	MOST of China [2012CB921303, 2009CB929100, 2012CB821402]; NSF-China [11074174, 11121063, 91221302, 11274364]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/56881]
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	Chen, CZ,Sun, QF,Wang, F,et al. Detection of spinons via spin transport[J]. PHYSICAL REVIEW B,2013,88(4).
APA	Chen, CZ,Sun, QF,Wang, F,&Xie, XC.(2013).Detection of spinons via spin transport.PHYSICAL REVIEW B,88(4).
MLA	Chen, CZ,et al."Detection of spinons via spin transport".PHYSICAL REVIEW B 88.4(2013).