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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; Wu, ZY; Xu W(徐伟); Wu ZY(吴自玉); Zhang LJ(张林娟); Chu WS(储旺盛)
2012
发表期刊NEW JOURNAL OF PHYSICS
卷号14页码:33005
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.
学科领域Physics
DOI10.1088/1367-2630/14/3/033005
收录类别SCI
WOS记录号WOS:000302326000003
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224522
专题多学科研究中心
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.
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