Optimizing the superconducting transition temperature and upper critical field of Sn(1-x)In(x)Te

Abstract

Sn(1-x)In(x)Te is a possible candidate for topological superconductivity. Previous work has shown that substitution of In for Sn in the topological crystalline insulator SnTe results in superconductivity, with the transition temperature, Tc, growing with In concentration. We have performed a systematic investigation of Sn(1-x)In(x)Te for a broad range of x, synthesizing single crystals (by a modified floating zone method) as well as polycrystalline samples. The samples have been characterized by x-ray diffraction, resistivity, and magnetization. For the single crystals, the maximum Tc is obtained at x=0.45 with a value of of 4.5 K, as determined by the onset of diamagnetism.

5 pages, 6 figures; revised version

References in corpus (8)

• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Topological Crystalline Insulators
• Experimental realization of a topological crystalline insulator in SnTe
• A topological crystalline insulator (TCI) phase via topological phase transition and crystalline mirror symmetry
• Odd-Parity Pairing and Topological Superconductivity in a Strongly Spin-Orbit Coupled Semiconductor
• Enhanced superconducting pairing interaction in indium-doped tin telluride
• Fermiology of Strongly Spin-Orbit Coupled Superconductor Sn1-xInxTe and its Implication to Topological Superconductivity
• Superconducting properties of the In substituted Topological Crystalline Insulator, SnTe

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