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Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3)
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; Zheng LR(郑黎荣); Liu J(刘景); Hu TD(胡天斗)
2010
发表期刊EPL
卷号91期号:5页码:57008
通讯作者[Sun, Liling ; Dai, Xi ; Zhang, Chao ; Yi, Wei ; Chen, Genfu ; Wang, Nanlin ; Yang, Jie ; Ren, Zhian ; Lu, Wei ; Dong, Xiaoli ; Che, Guangcan ; Wu, Qi ; Ding, Hong ; Zhao, Zhongxian] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China ; [Sun, Liling ; Dai, Xi ; Zhang, Chao ; Yi, Wei ; Chen, Genfu ; Wang, Nanlin ; Yang, Jie ; Ren, Zhian ; Lu, Wei ; Dong, Xiaoli ; Che, Guangcan ; Wu, Qi ; Ding, Hong ; Zhao, Zhongxian] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China ; [Zheng, Lirong ; Liu, Jing ; Hu, Tiandou] Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100039, Peoples R China ; [Jiang, Zheng ; Wei, Xiangjun ; Huang, Yuying] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
文章类型Article
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
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1209/0295-5075/91/57008
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000282123300029
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240702
专题多学科研究中心
实验物理中心
加速器中心
作者单位中国科学院高能物理研究所
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GB/T 7714
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):57008.
APA Sun, LL.,Dai, X.,Zhang, C.,Yi, W.,Chen, GF.,...&胡天斗.(2010).Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3).EPL,91(5),57008.
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):57008.
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