Negative magnetoresistance and spin filtering of spin-coupled di-iron-oxo clusters

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	Negative magnetoresistance and spin filtering of spin-coupled di-iron-oxo clusters
	Wang, RN ; Rodriguez, JH ; Liu, WM
刊名	PHYSICAL REVIEW B
	2014
卷号	89 期号:23
ISSN号	1098-0121
通讯作者	Wang, RN (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	Spin-dependent transport has been computationally studied for an open-shell singlet di-iron-oxo cluster. Currents and magnetoresistances have been investigated as a function of spin state within the nonequilibrium Green's function approach. The applied bias can be used to tune the sign of the observed magnetoresistance. A colossal magnetoresistance has been determined for hydrogen anchoring. Applied biases lower than 0.3 V, in conjunction with sulfur anchoring, induce a negative magnetoresistance due to lowering of the anchor-scatterer tunneling barrier. The di-iron-oxo cluster displays nearly perfect spin filtering for parallel alignment of the iron magnetic moments due to the energetic proximity, relative to the Fermi level, of its highest occupied molecular orbitals.
资助信息	China Postdoctoral Science Foundation [2013M530756]; NKBRSFC [2011CB921502, 2012CB821305]; NSFC [61227902, 61378017]; NSF [CHE0349189]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59534]
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	Wang, RN,Rodriguez, JH,Liu, WM. Negative magnetoresistance and spin filtering of spin-coupled di-iron-oxo clusters[J]. PHYSICAL REVIEW B,2014,89(23).
APA	Wang, RN,Rodriguez, JH,&Liu, WM.(2014).Negative magnetoresistance and spin filtering of spin-coupled di-iron-oxo clusters.PHYSICAL REVIEW B,89(23).
MLA	Wang, RN,et al."Negative magnetoresistance and spin filtering of spin-coupled di-iron-oxo clusters".PHYSICAL REVIEW B 89.23(2014).