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Superconducting properties of molybdenum ruthenium alloy Mo0.63Ru0.37

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  • Wensen Wei

    (Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
    Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Min Ge

    (Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China)

  • Shasha Wang

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Lei Zhang

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences)

  • Yuyan Han

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences)

  • Haifeng Du

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Mingliang Tian

    (Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Yuheng Zhang

    (Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
    Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

Abstract

Resistance, magnetization and specific heat measurements were performed on Mo0.63Ru0.37 alloy. All of them confirm that Mo0.63Ru0.37 becomes superconducting at about 7.0 K with bulk nature. Its upper critical field behavior fits to Werthamer-Helfand-Hohenberg (WHH) model quite well, with an upper critical field of μ0Hc2(0) = 8.64 T, less than its Pauli limit. Its electronic specific heat is reproduced by Bardeen-Cooper-Schriffer (BCS)-based α-model with a gap ratio Δ0 = 1.88k B T c , which is a little larger than the standard BCS value of 1.76. We concluded that Mo0.63Ru0.37 is a fully gapped isotropic s-wave superconductor, with its features are mostly consistent with the conventional theory.

Suggested Citation

  • Wensen Wei & Min Ge & Shasha Wang & Lei Zhang & Yuyan Han & Haifeng Du & Mingliang Tian & Yuheng Zhang, 2018. "Superconducting properties of molybdenum ruthenium alloy Mo0.63Ru0.37," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 91(3), pages 1-7, March.
    • Handle: RePEc:spr:eurphb:v:91:y:2018:i:3:d:10.1140_epjb_e2018-80714-8
    DOI: 10.1140/epjb/e2018-80714-8
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    Solid State and Materials;

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