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arXiv 2001.046402020-01-14cond-mat.supr-concond-mat.mtrl-sci

Superconducting properties of high-entropy-alloy tellurides M-Te (M: Ag, In, Cd, Sn, Sb, Pb, Bi) with a NaCl-type structure

Md. Riad Kasem, Kazuhisa Hoshi, Rajveer Jha, Masayoshi Katsuno, Aichi Yamashita, Yosuke Goto, Tatsuma D. Matsuda, Yuji Aoki, Yoshikazu Mizuguchi

备注：: 9 pages, 4 figures
DOI：: 10.35848/1882-0786/ab7482

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High-entropy-alloy-type tellurides M-Te, which contain five different metals of M = Ag, In, Cd, Sn, Sb, Pb, and Bi, were synthesized using high pressure synthesis. Structural characterization revealed that all the obtained samples have a cubic NaCl-type structure. Six samples, namely AgCdSnSbPbTe5, AgInSnSbPbTe5, AgCdInSnSbTe5, AgCdSnPbBiTe5, AgCdInPbBiTe5, and AgCdInSnBiTe5 showed superconductivity. The highest transition temperature (Tc) among those samples was 1.4 K for AgInSnSbPbTe5. A sample of AgCdInSbPbTe5 showed a semiconductor-like transport behavior. From the relationship between Tc and lattice constant, it was found that a higher Tc is observed for a telluride with a larger lattice constant.

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