Superconducting properties of the In substituted Topological Crystalline Insulator, SnTe

Abstract

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 Tc(onset) at ~4.70(5) K and Tc(zero) at ~3.50(5) K. The upper and lower critical fields are estimated to be μ0Hc2(0) = 1.42(3) T and μ0Hc1(0) = 0.90(3) mT respectively, while κ = 56.4(8) indicates this material is a strongly type II superconductor.

arXiv comment5 pages, 4 figures, to appear in Physical Review B (Rapid Communications)

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• Topological Insulators
• Topological insulators and superconductors
• Topological Crystalline Insulators
• Topological Crystalline Insulators in the SnTe Material Class
• Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator
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• Topological Crystalline Insulator Nanostructures
• Superconducting doped topological materials
• Surface electronic state of superconducting topological crystalline insulator
• Superconductivity induced by In substitution into the topological crystalline insulator Pb(0.5)Sn(0.5)Te
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• Surface oxidation and thermoelectric properties of indium-doped tin telluride nanowires
• Studies of the superconducting properties of Sn1-xInxTe (x=0.38 to 0.45) using muon-spin spectroscopy
• Observation of surface states on heavily indium doped SnTe(111), a superconducting topological crystalline insulator
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• Superconductivity in In-doped AgPbBiTe3 compounds synthesized by high-pressure synthesis
• Non-Trivial Topological Phase in the Sn_{1-x}In_xTe Superconductor