Superconducting properties of the In-substituted topological crystalline insulator SnTe

被引：75
作者：
Balakrishnan, G. [1 ]
Bawden, L. [1 ]
Cavendish, S. [1 ]
Lees, M. R. [1 ]
机构：
[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England
来源：
PHYSICAL REVIEW B | 2013年 / 87卷 / 14期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1103/PhysRevB.87.140507
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report detailed investigations of the properties of a superconductor obtained by substituting In at the Sn site in the topological crystalline insulator (TCI), SnTe. Transport, magnetization, and heat capacity measurements have been performed on crystals of Sn0.6In0.4Te, which is shown to be a bulk superconductor with T-c(onset) at similar to 4.70(5) K and T-c(zero) at similar to 3.50(5) K. The upper and lower critical fields are estimated to be mu H-0(c2)(0) = 1.42(3) T and mu H-0(c1)(0) = 0.90(3) mT, respectively, while kappa = 56.4(8) indicates this material is a strongly type-II superconductor. DOI: 10.1103/PhysRevB.87.140507
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页数：4
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