High-Pressure Synthesis and Superconductivity of Ag-doped Topological Crystalline Insulator SnTe (Sn1-xAgxTe with x = 0-0.5)

Abstract

We have synthesized the single-phase polycrystalline samples of Sn1-xAgxTe, Ag-doped topological crystalline insulator SnTe, with a range of x = 0-0.5 using a high-pressure synthesis method. The crystal structure of Sn1-xAgxTe at room temperature is a cubic NaCl-type structure, which does not vary upon Ag substitution. Bulk superconductivity with a transition temperature of 2.4 K was observed for x = 0.15-0.25, and the optimal Ag content was x = 0.2. The Sn1-xAgxTe superconducting phase will be useful for understanding the superconductivity nature and mechanisms of the carrier-doped SnTe system.

14 pages, 7 figures, 1 table

References in corpus (8)

• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Topological Crystalline Insulators
• Bulk superconducting phase with a full energy gap in the doped topological insulator Cu_xBi_2Se_3
• Enhanced superconducting pairing interaction in indium-doped tin telluride
• Superconductivity above 50K in LnFeAsO1-y (Ln= Nd, Sm, Gd, Tb and Dy) Synthesized by High-pressure Technique
• Superconducting properties of the In substituted Topological Crystalline Insulator, SnTe
• Stabilization of high-Tc phase of BiS2-based superconductor LaO0.5F0.5BiS2 using high-pressure synthesis
• Resonance-state-induced superconductivity at high Indium contents in In-doped SnTe

Cited by in corpus (9)

• Superconducting properties of high-entropy-alloy tellurides M-Te (M: Ag, In, Cd, Sn, Sb, Pb, Bi) with a NaCl-type structure
• Superconductivity in HEA-type compounds
• ARPES study of the epitaxially grown topological crystalline insulator SnTe(111)
• Unusual phonon density of states and response to the superconducting transition in the In-doped topological crystalline insulator Pb${}_{0.5}$Sn${}_{0.5}$Te
• Nodeless superconducting gap in the candidate topological superconductor Sn${}_{1-x}$In${}_x$Te for x = 0.7
• Bi Substitution Effects on Superconductivity of Valence-Skip superconductor AgSnSe2
• Specific Heat and Electrical Transport Properties of Sn0.8Ag0.2Te Superconductor
• Full superconducting gap in the candidate topological superconductor In${}_{1-x}$Pb${}_x$Te for x = 0.2
• Superconductivity in In-doped AgPbBiTe3 compounds synthesized by high-pressure synthesis