High-Pressure Synthesis and Superconducting Properties of NaCl-Type In1-xPbxTe (x = 0–0.8)

Masayoshi Katsuno; Rajveer Jha; Kazuhisa Hoshi; Ryota Sogabe; Yosuke Goto; Yoshikazu Mizuguchi

doi:10.3390/condmat5010014

Condensed Matter (Mar 2020)

High-Pressure Synthesis and Superconducting Properties of NaCl-Type In1-xPbxTe (x = 0–0.8)

Masayoshi Katsuno,
Rajveer Jha,
Kazuhisa Hoshi,
Ryota Sogabe,
Yosuke Goto,
Yoshikazu Mizuguchi

Affiliations

Masayoshi Katsuno: Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Rajveer Jha: Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Kazuhisa Hoshi: Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Ryota Sogabe: Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Yosuke Goto: Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
Yoshikazu Mizuguchi: Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan

DOI: https://doi.org/10.3390/condmat5010014
Journal volume & issue: Vol. 5, no. 1
p. 14

Abstract

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We have investigated the Pb-substitution effect upon the superconductivity of NaCl-type In1-xPbxTe. Polycrystalline samples with x = 0−0.8 were synthesized using high-pressure synthesis. The lattice parameter was systematically increased by Pb substitution. For x ≤ 0.6, bulk superconductivity was observed, and the superconducting transition temperature increased from 3 K (for InTe) to 5 K by Pb substitutions. From analyses of specific heat jumps at the superconducting transition, conventional (phonon-mediated) weak-coupling pairing mechanisms were suggested for In1-xPbxTe.

Published in Condensed Matter

ISSN: 2410-3896 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Physics
Website: http://www.mdpi.com/journal/condensedmatter

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