Pressure-induced competition between superconductivity and Kondo effect in CeFeAsO1-xFx (x=0.16 and 0.3)

doi:10.1209/0295-5075/91/57008

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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 (IF:1.957[JCR-2016],1.928[5-Year])
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
DOI	10.1209/0295-5075/91/57008
URL	查看原文
收录类别	SCI ; ADS
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000282123300029
ADS Bibcode	2010EL.....9157008S
ADS URL	https://ui.adsabs.harvard.edu/abs/2010EL.....9157008S
ADS引文	https://ui.adsabs.harvard.edu/abs/2010EL.....9157008S/citations
引用统计	正在获取... 被引频次：17 [ADS]
文献类型	期刊论文
条目标识符	https://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
第一作者单位	中国科学院高能物理研究所
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):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.