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题名: Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors
作者: Cheng, J; Zhai, HF; Wang, Y; Xu, W; Liu, SL; Cao, GH
刊名: SCIENTIFIC REPORTS
出版日期: 2016
卷号: 6, 页码:-
DOI: 10.1038/srep37394
通讯作者: Cheng, J (reprint author), Nanjing Univ Posts & Telecommun, Coll Sci, Ctr Adv Funct Ceram, Nanjing 210023, Jiangsu, Peoples R China.
文章类型: 期刊论文
英文摘要: Superconductivity within layered crystal structures has attracted sustained interest among condensed matter community, primarily due to their exotic superconducting properties. EuBiS2F is a newly discovered member in the BiS2-based superconducting family, which shows superconductivity at 0.3 K without extrinsic doping. With 50 at.% Ce substitution for Eu, superconductivity is enhanced with Tc increased up to 2.2 K. However, the mechanisms for the Tc enhancement have not yet been elucidated. In this study, the Ce-doping effect on the self-electron-doped superconductor EuBiS2F was investigated by X-ray absorption spectroscopy (XAS). We have established a relationship between Ce-doping and the T-c enhancement in terms of Eu valence changes and nanoscale atomic displacements. The new finding sheds light on the interplay among superconductivity, charge and local structure in BiS2-based superconductors.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000388231400001
ISSN号: 2045-2322
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26617
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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