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. |
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