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mu SR studies of superconducting MgB1.96C0.04

机译:MgB1.96C0.04的mu SR研究

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The superconducting properties of MgB1.96C0.04 have been investigated by the transverse-field muon spin rotation (TF-muSR) technique. The extracted temperature dependence of the mu(+) spin depolarization rate, sigma at TF = 0.6 T has been analyzed in terms of a two-gap model. Carbon doping affects the size of both superconducting gaps and the doping effect is more pronounced for the smaller gap, which is related to the 3D pi-sheets of the Fermi surface. The 'universal' correlation between the superconducting transition temperature, T-c and the effective Fermi temperature, T-F (Uemura plot) is also discussed. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 23]
机译:MgB1.96C0.04的超导性能已通过横场μ自旋旋转(TF-muSR)技术进行了研究。根据两间隙模型分析了mu(+)自旋去极化率sigma在TF = 0.6 T时的提取温度依赖性。碳掺杂会影响两个超导间隙的尺寸,并且较小的间隙会更明显地引起掺杂,这与费米表面的3Dπ片有关。还讨论了超导转变温度T-c和有效费米温度T-F(植村图)之间的“通用”相关性。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:23]

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