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Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors
Cheng, J; Zhai, HF; Wang, Y; Xu, W; Liu, SL; Cao, GH; Xu W(徐伟)
2016
发表期刊SCIENTIFIC REPORTS
卷号6
文章类型期刊论文
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.
DOI10.1038/srep37394
关键词[WOS]CHEMICAL PRESSURE ; LAO1-XFXBIS2 ; EXAFS ; BOND
语种英语
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000388231400001
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260377
专题多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Cheng, J,Zhai, HF,Wang, Y,et al. Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors[J]. SCIENTIFIC REPORTS,2016,6.
APA Cheng, J.,Zhai, HF.,Wang, Y.,Xu, W.,Liu, SL.,...&徐伟.(2016).Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors.SCIENTIFIC REPORTS,6.
MLA Cheng, J,et al."Role of valence changes and nanoscale atomic displacements in BiS2-based superconductors".SCIENTIFIC REPORTS 6(2016).
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