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

Condensed Matter

Ryota Sogabe¹  Rajveer Jha¹  Kazuhisa Hoshi¹  Yoshikazu Mizuguchi¹  Yosuke Goto¹  Masayoshi Katsuno¹ 

[1] Department of Physics, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan;

关键词: element substitution;    superconductivity;    valence fluctuation;    high-pressure synthesis;   

DOI  :  10.3390/condmat5010014

来源: DOAJ

【 摘 要 】

We have investigated the Pb-substitution effect upon the superconductivity of NaCl-type In_1-xPb_xTe. 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 In_1-xPb_xTe.

【 授权许可】

Unknown