Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3)
文献类型：期刊论文
| 作者 | Sun, LL ; Dai, X ; Zhang, C ; Yi, W ; Chen, GF ; Wang, NL ; Zheng, LR ; Jiang, Z ; Wei, XJ ; Huang, YY ; Yang, J ; Ren, ZA ; Lu, W ; Dong, XL ; Che, GC ; Wu, Q ; Ding, H ; Liu, J ; Hu, TD ; Zhao, ZX |
| 刊名 | EPL
 |
| 出版日期 | 2010 |
| 卷号 | 91期号:5 |
| 关键词 | IRON TEMPERATURE |
| ISSN号 | 0295-5075 |
| 通讯作者 | Sun, LL (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We studied high-pressure behavior of CeFeAsO1-xFx superconductors with x = 0.16 and x = 0.3 by in situ measurements of electrical resistance, X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS) with diamond anvil cell (DAC). A pressure-induced quantum phase transition from the superconducting state to the non-superconducting Kondo screened phase associated with a volume collapse was discovered in the layered CeFeAsO1-xFx compounds. The XAS data of Ce-L-3 in CeFeAsO0.7F0.3 clearly show a spectral weight transfer from the main line to the satellite line after the transition, demonstrating that Ce's valence changes under high pressure. Comprehensive experimental results and analysis in this paper provide some insight into the connection among superconductivity, valence change and structural phase transition, which reveals a picture of pressure-induced competition between Kondo singlet and BCS singlet in the Ce-pnictide superconductors. Copyright (C) EPLA, 2010 |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [10874230, 10874211, 10804127, 11074294]; 973 project [2010CB923000]; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/51436]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Sun, LL,Dai, X,Zhang, C,et al. Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3)[J]. EPL,2010,91(5). |
| APA | Sun, LL.,Dai, X.,Zhang, C.,Yi, W.,Chen, GF.,...&Zhao, ZX.(2010).Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3).EPL,91(5). |
| MLA | Sun, LL,et al."Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3)".EPL 91.5(2010). |
入库方式： OAI收割
来源：物理研究所
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