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题名: Penetration depth measurements in MgB2: Evidence for unconventional superconductivity
作者: Panagopoulos, C ;  Rainford, BD ;  Xiang, T ;  Scott, CA ;  Kambara, M ;  Inoue, IH
刊名: PHYSICAL REVIEW B
出版日期: 2001
卷号: 64, 期号:9, 页码:-
关键词: T-C SUPERCONDUCTORS ;  TEMPERATURE ;  YBA2CU3O6.95 ;  DENSITY
学科分类: Physics
通讯作者: Inoue, IH , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
部门归属: Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England; Univ Cambridge, Interdisciplinary Res Ctr Superconduct, Cambridge CB3 0HE, England; Univ Southampton, Dept Phys & Astron, Southampton SO17 1BJ, Hants, England; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan
英文摘要: We have measured the magnetic penetration depth of the recently discovered binary superconductor MgB2 using Mon spin rotation and low-field ac susceptibility. From the damping of the muon precession signal we find the penetration depth at zero temperature is similar to 85 nm. The low-temperature penetration depth shows a quadratic temperature dependence, indicating either the presence of nodes in the gap or that the gap minimum must be smaller than the lowest temperature measured (4.2 K) if the pairing has anisotropic s-wave symmetry.
收录类别: SCI
WOS记录号: WOS:000170726000105
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13675
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Panagopoulos, C,Rainford, BD,Xiang, T,et al. Penetration depth measurements in MgB2: Evidence for unconventional superconductivity[J]. PHYSICAL REVIEW B,2001,64(9):-.
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