s-wave pairing in MgCNi3 revealed by point contact tunneling

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	s-wave pairing in MgCNi3 revealed by point contact tunneling
	Shan, L ; Tao, HJ ; Gao, H ; Li, ZZ ; Ren, ZA ; Che, GC ; Wen, HH
刊名	PHYSICAL REVIEW B
	2003
卷号	68 期号:14
关键词	OVERDOPED BI2SR2CACU2O8+DELTA QUASI-PARTICLE SPECTROSCOPY SUPERCONDUCTIVITY JUNCTION MGB2
ISSN号	1098-0121
通讯作者	Shan, L (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China.
中文摘要	Electron-tunneling spectroscopy on MgCNi3 has been studied with N/MgCNi3 point contacts with N=PtIr and Au. Most of the measured tunneling conductance show an Andreev reflection peak and a pronounced dip structure outside the peak. We introduce a Josephson junction in series with the point contact to model the tunneling process. By tuning the weights of the point contact quasiparticle voltage and the Josephson voltage we are able to fit almost all the tunneling data nicely. The results support BCS s-wave pairing in MgCNi3, and the model explains the sharp dip structure which is seen in point contact tunneling into some polycrystalline superconductors.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/54247]
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	Shan, L,Tao, HJ,Gao, H,et al. s-wave pairing in MgCNi3 revealed by point contact tunneling[J]. PHYSICAL REVIEW B,2003,68(14).
APA	Shan, L.,Tao, HJ.,Gao, H.,Li, ZZ.,Ren, ZA.,...&Wen, HH.(2003).s-wave pairing in MgCNi3 revealed by point contact tunneling.PHYSICAL REVIEW B,68(14).
MLA	Shan, L,et al."s-wave pairing in MgCNi3 revealed by point contact tunneling".PHYSICAL REVIEW B 68.14(2003).