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Penetration depth measurements in MgB2: Evidence for unconventional superconductivity
Panagopoulos, C; Rainford, BD; Xiang, T; Scott, CA; Kambara, M; Inoue, IH; Inoue, IH , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
2001
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号64期号:9页码:-
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.
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
关键词T-c Superconductors Temperature Yba2cu3o6.95 Density
学科领域Physics
收录类别SCI
WOS记录号WOS:000170726000105
引用统计
被引频次:56[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13675
专题理论物理所SCI论文
通讯作者Inoue, IH , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England.
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Panagopoulos, C,Rainford, BD,Xiang, T,et al. Penetration depth measurements in MgB2: Evidence for unconventional superconductivity[J]. PHYSICAL REVIEW B,2001,64(9):-.
APA Panagopoulos, C.,Rainford, BD.,Xiang, T.,Scott, CA.,Kambara, M.,...&Inoue, IH , Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England..(2001).Penetration depth measurements in MgB2: Evidence for unconventional superconductivity.PHYSICAL REVIEW B,64(9),-.
MLA Panagopoulos, C,et al."Penetration depth measurements in MgB2: Evidence for unconventional superconductivity".PHYSICAL REVIEW B 64.9(2001):-.
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