Activation conductivity and superconducting state in solid solutions (PbzSn1-z)0.8In0.2Te.

D. V. Denisov,N. Yu. Mikhailin, A. E. Rudominskiy,R. V. Parfeniev,D. V. Shamshur

Physica C: Superconductivity and its Applications（2022）

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摘要

•Resistivity of (PbzSn1-z)0.8In0.2Te solid solutions with various z was studied.•Metallic conductivity observed for z ≤ 0.4, activation conductivity for z ≥ 0.5.•Conductivity type change induced by the shift of indium impurity band.•Superconductivity was observed in samples with metallic conductivity.•Superconductivity persists if activation energy is lower than superconducting gap

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关键词

Superconductivity in semiconductors,Superconductor-insulator transition,Activation energy,Topological materials

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