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| Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2 Revealed by X-ray Absorption Spectroscopy | |
| Cheng, J; Yang, YS; Li, YK; Dong, P; Wang, Y; Liu, SL | |
| 2017 | |
| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| ISSN | 1932-7447 |
| Volume | 121Issue:15Pages:8525-8530 |
| Subtype | 期刊论文 |
| Abstract | Superconductivity in quasi-two-dimensional crystal Structures has attracted sustained interest among condensed matter community, primarily due to their exotic superconducting properties. Recently, superconductivity of BiS2-based compounds with the desired layered crystal structure has been reported. In this contribution, Ce-doping effect on-the electronic structure and local atomic displacement of Sr1-xCexFBiS2 was investigated by Ce and Bi L-3-edge X-ray absorption spectroscopy. Upon Ce-doping both the Ce-S2 and Bi-S2 bonds shrink, enhancing the coupling between Sr/CeF and super-conducting BiS2 layers. Therefore, Ce substitution provides electron carriers to the superconducting BiS2 layers through the enhanced Ce-S2-Bi channel. On the other hand, Ce-doping effectively modulates the in-plane structure of Bi-S1 plane. In Ce-doped compounds both the shortening of in-plane Bi-S1 bond and the flatter Bi-S1 plane would enhance overlap of Bi(6p(x)/6p(y))-S(3p) orbitals within the superconducting plane. Therefore, Ce-doping not only provides the electron carriers to superconducting BiS2 layers, but also results in the flatter Bi-S1 plane. This may be related to the enhancement of superconductivity in Ce-doped SrFBiS2 compounds. |
| DOI | 10.1021/acs.jpcc.7b01479 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000400039300033 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/27309 |
| Collection | 中科院上海应用物理研究所2011-2019年 |
| Recommended Citation GB/T 7714 | Cheng, J,Yang, YS,Li, YK,et al. Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2 Revealed by X-ray Absorption Spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2017,121(15):8525-8530. |
| APA | Cheng, J,Yang, YS,Li, YK,Dong, P,Wang, Y,&Liu, SL.(2017).Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2 Revealed by X-ray Absorption Spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY C,121(15),8525-8530. |
| MLA | Cheng, J,et al."Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2 Revealed by X-ray Absorption Spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY C 121.15(2017):8525-8530. |
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| Electron Transfer an（6910KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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