Charge redistribution and local lattice structure of (F, Zn)-codoped LaFeAsO superconductor

	Charge redistribution and local lattice structure of (F, Zn)-codoped LaFeAsO superconductor
	Cheng, J; Zhou J(周靖); Zhou, J; Hu, R; Xu, W; Li, YK; Zhang, LJ; Marcelli, A; Chu, WS; Xu, ZA
刊名	NEW JOURNAL OF PHYSICS
	2012
卷号	14 页码:33005
英文摘要	To understand the abnormal behavior of the superconducting transition temperature (T-c) because of the presence of a non-magnetic Zn impurity in the (F, Zn)-codoped LaFeAsO system (Li et al 2010 New J. Phys. 12 083008), we investigated its unique electronic and local structures via x-ray absorption spectroscopy and first-principles calculations. The data obtained showed that the presence of a Zn impurity induces an electron transfer from As to Fe atoms in both the F-underdoped and -overdoped regions. Moreover, due to the lattice mismatch, the local lattice structure is finely modulated by both F and Zn impurities. Actually, in the F-underdoped region doping by Zn is associated with regular FeAs4 tetrahedra, while distorted FeAs4 tetrahedra occur in the F-overdoped region where superconductivity is significantly suppressed.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000302326000003
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224522]
专题	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Cheng, J,Zhou J,Zhou, J,et al. Charge redistribution and local lattice structure of (F, Zn)-codoped LaFeAsO superconductor[J]. NEW JOURNAL OF PHYSICS,2012,14:33005.
APA	Cheng, J.,周靖.,Zhou, J.,Hu, R.,Xu, W.,...&储旺盛.(2012).Charge redistribution and local lattice structure of (F, Zn)-codoped LaFeAsO superconductor.NEW JOURNAL OF PHYSICS,14,33005.
MLA	Cheng, J,et al."Charge redistribution and local lattice structure of (F, Zn)-codoped LaFeAsO superconductor".NEW JOURNAL OF PHYSICS 14(2012):33005.