Superconductivity in Cubic A15-type V–Nb–Mo–Ir–Pt High-Entropy Alloys

Bin Liu; Bin Liu; Bin Liu; Jifeng Wu; Jifeng Wu; Yanwei Cui; Yanwei Cui; Yanwei Cui; Qinqing Zhu; Qinqing Zhu; Qinqing Zhu; Guorui Xiao; Guorui Xiao; Guorui Xiao; Siqi Wu; Guanghan Cao; Zhi Ren; Zhi Ren

doi:10.3389/fphy.2021.651808

Frontiers in Physics (Mar 2021)

Superconductivity in Cubic A15-type V–Nb–Mo–Ir–Pt High-Entropy Alloys

Bin Liu,
Bin Liu,
Bin Liu,
Jifeng Wu,
Jifeng Wu,
Yanwei Cui,
Yanwei Cui,
Yanwei Cui,
Qinqing Zhu,
Qinqing Zhu,
Qinqing Zhu,
Guorui Xiao,
Guorui Xiao,
Guorui Xiao,
Siqi Wu,
Guanghan Cao,
Zhi Ren,
Zhi Ren

Affiliations

Bin Liu: Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, China
Bin Liu: Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, China
Bin Liu: Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, China
Jifeng Wu: Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, China
Jifeng Wu: Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, China
Yanwei Cui: Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, China
Yanwei Cui: Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, China
Yanwei Cui: Department of Physics, Zhejiang University, Hangzhou, China
Qinqing Zhu: Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, China
Qinqing Zhu: Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, China
Qinqing Zhu: Department of Physics, Fudan University, Shanghai, China
Guorui Xiao: Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, China
Guorui Xiao: Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, China
Guorui Xiao: Department of Physics, Zhejiang University, Hangzhou, China
Siqi Wu: Department of Physics, Zhejiang University, Hangzhou, China
Guanghan Cao: Department of Physics, Zhejiang University, Hangzhou, China
Zhi Ren: Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou, China
Zhi Ren: Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou, China

DOI: https://doi.org/10.3389/fphy.2021.651808
Journal volume & issue: Vol. 9

Abstract

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We report the crystal structure and superconducting properties of new V5+2xNb35−xMo35−xIr10Pt15 high-entropy alloys (HEAs) for x in the range of 0 ≤x≤ 10. These HEAs are found to crystallize in a cubic A15-type structure and have a weakly coupled, fully gapped superconducting state. A maximum Tc of 5.18 K and zero-temperature upper critical field Bc2(0) of 6.4 T are observed at x = 0, and both quantities decrease monotonically with the increase of V content x. In addition, Tc shows an increase with increasing valence electron concentration from 6.4 to 6.5, which is compared with other A15-type HEA and binary superconductors.

Published in Frontiers in Physics

ISSN: 2296-424X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Physics
Website: https://www.frontiersin.org/journals/physics

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