Role of valence changes and nanoscale atomic displacements in BiS(2)-based superconductors.
Role of valence changes and nanoscale atomic displacements in BiS(2)-based superconductors.
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BiS2 基超导体中价态变化和纳米级原子位移的作用
DOI:
10.1038/srep37394
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发表时间:
2016-11-22
影响因子:
4.6
通讯作者:
Cao G
中科院分区:
文献类型:
--
作者:
Cheng J;Zhai H;Wang Y;Xu W;Liu S;Cao G
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 theTcenhancement 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 theTcenhancement 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.
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影响因子:
3.7
作者:
Lin, Xi;Ni, Xinxin;Xu, Zhuan
通讯作者:
Xu, Zhuan
影响因子:
3.7
作者:
Grazioli, C;Hu, Z;Attenkofer, K
通讯作者:
Attenkofer, K
影响因子:
3.7
作者:
Xing, Jie;Li, Sheng;Wen, Hai-Hu
通讯作者:
Wen, Hai-Hu
DOI:
10.1107/s0108768190011041
发表时间:
1991-04-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE
影响因子:
--
作者:
BRESE, NE;OKEEFFE, M
通讯作者:
OKEEFFE, M
影响因子:
2.5
作者:
Newville, M
通讯作者:
Newville, M