Superconductivity in High-Entropy-Alloy Telluride AgInSnPbBiTe5
Yoshikazu Mizuguchi
TL;DR
This paper reports the discovery of superconductivity at 2.6 K in a high-entropy-alloy telluride, AgInSnPbBiTe5, synthesized under high pressure, marking the first HEA superconductor with a mixed metal site in a telluride.
Contribution
It introduces the first high-entropy-alloy superconductor with a mixed metal site in a telluride, expanding the scope of HEA materials to superconductivity.
Findings
Superconductivity observed at 2.6 K in AgInSnPbBiTe5.
First example of a high-entropy-alloy superconductor with a mixed metal site.
Successful synthesis of a polycrystalline HEA telluride under high pressure.
Abstract
A polycrystalline sample of the high-entropy-alloy-type telluride AgInSnPbBiTe5 was synthesized using high-pressure synthesis. Superconductivity with a transition temperature (Tc) of 2.6 K was observed in AgInSnPbBiTe5. Elemental and structural analyses revealed that five metals are mixed in a metal site of an NaCl-type structure. Since AgInSnPbBiTe5 has a cation site (Ag, In, Sn, Pb, and Bi) and an anion site (Te), this is the first example of a high-entropy-alloy (HEA) pseudo-binary superconductor.
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