Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2Revealed by X-ray Absorption Spectroscopy
文献类型：期刊论文
| 作者 | Cheng, Jie1; Yang, Yingshuo2; Li, Yuke3; Dong, Peng4; Wang, Yu5; Liu, Shengli1,6 |
| 刊名 | Journal of Physical Chemistry C
 |
| 出版日期 | 2017 |
| 卷号 | 121期号:15页码:8525-8530 |
| ISSN号 | 19327447 |
| DOI | 10.1021/acs.jpcc.7b01479 |
| 英文摘要 | 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-xCexFBiS2was investigated by Ce and Bi L3-edge X-ray absorption spectroscopy. Upon Ce-doping both the Ce-S2 and Bi-S2 bonds shrink, enhancing the coupling between Sr/CeF and superconducting BiS2layers. Therefore, Ce substitution provides electron carriers to the superconducting BiS2layers 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(6px/6py)-S(3p) orbitals within the superconducting plane. Therefore, Ce-doping not only provides the electron carriers to superconducting BiS2layers, but also results in the flatter Bi-S1 plane. This may be related to the enhancement of superconductivity in Ce-doped SrFBiS2compounds. © 2017 American Chemical Society. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/25362]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.College of Science, Center of Advanced Functional Ceramics, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu; 210023, China; 2.College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu; 210023, China; 3.Department of Physics, Hangzhou Normal University, Hangzhou; 310036, China; 4.Information Construction and Management Office, Nanjing University of Posts and Telecommunications, Nanjing, Jiangsu; 210023, China; 5.Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai; 201204, China; 6.Nanjing University (Suzhou) High-Tech Institute, Suzhou; 215123, China |
| 推荐引用方式 GB/T 7714 | Cheng, Jie,Yang, Yingshuo,Li, Yuke,et al. Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2Revealed by X-ray Absorption Spectroscopy[J]. Journal of Physical Chemistry C,2017,121(15):8525-8530. |
| APA | Cheng, Jie,Yang, Yingshuo,Li, Yuke,Dong, Peng,Wang, Yu,&Liu, Shengli.(2017).Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2Revealed by X-ray Absorption Spectroscopy.Journal of Physical Chemistry C,121(15),8525-8530. |
| MLA | Cheng, Jie,et al."Electron Transfer and Local Atomic Displacement in Sr1-xCexFBiS2Revealed by X-ray Absorption Spectroscopy".Journal of Physical Chemistry C 121.15(2017):8525-8530. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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