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

Wensen Wei, Min Ge, Shasha Wang, Lei Zhang, Yuyan Han, Haifeng Du (), Mingliang Tian and Yuheng Zhang
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Wensen Wei: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
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
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
Mingliang Tian: Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of Chinese Academy of Sciences
Yuheng Zhang: Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China

The European Physical Journal B: Condensed Matter and Complex Systems, 2018, vol. 91, issue 3, 1-7

Abstract: 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.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1140/epjb/e2018-80714-8

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