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	Superconductivity in Undoped CaFe2As2 Single Crystals
	Chen, Dong-Yun1,2; Yu, Jia1,2; Ruan, Bin-Bin1,2; Guo, Qi1,2; Zhang, Lei3; Mu, Qing-Ge1,2; Wang, Xiao-Chuan1,2; Pan, Bo-Jin1,2; Chen, Gen-Fu1,2,4; Ren, Zhi-An1,2,4
刊名	CHINESE PHYSICS LETTERS
	2016-06-01
卷号	33期号:6页码:1-4
DOI	10.1088/0256-307X/33/6/067402
文献子类	Article
英文摘要	Single crystals of undoped CaFe2As2 are grown by an FeAs self-flux method, and the crystals are quenched in ice-water rapidly after high-temperature growth. The quenched crystal undergoes a collapsed tetragonal structural phase transition around 80K revealed by the temperature-dependent x-ray diffraction measurements. Superconductivity below 25 K is observed in the collapsed phase by resistivity and magnetization measurements. The isothermal magnetization curve measured at 2 K indicates that this is a typical type-II superconductor. For comparison, we systematically characterize the properties of the furnace-cooled, quenched, and post-annealed single crystals, and find strong internal crystallographic strain existing in the quenched samples, which is the key for the occurrence of superconductivity in the undoped CaFe2As2 single crystals.
WOS关键词	DOPED CAFE2AS2 ; PRESSURE ; AMBIENT
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000378778800032
资助机构	National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Natural Science Foundation of China(11474339) ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; National Basic Research Program of China(2010CB923000 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB07020100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100) ; 2011CBA00100)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22464]
专题	合肥物质科学研究院_中科院强磁场科学中心
作者单位	1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China 4.Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Dong-Yun,Yu, Jia,Ruan, Bin-Bin,et al. Superconductivity in Undoped CaFe2As2 Single Crystals[J]. CHINESE PHYSICS LETTERS,2016,33(6):1-4.
APA	Chen, Dong-Yun.,Yu, Jia.,Ruan, Bin-Bin.,Guo, Qi.,Zhang, Lei.,...&Ren, Zhi-An.(2016).Superconductivity in Undoped CaFe2As2 Single Crystals.CHINESE PHYSICS LETTERS,33(6),1-4.
MLA	Chen, Dong-Yun,et al."Superconductivity in Undoped CaFe2As2 Single Crystals".CHINESE PHYSICS LETTERS 33.6(2016):1-4.

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