Superconducting properties of molybdenum ruthenium alloy Mo0.63Ru0.37
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 = 1.88kBTc, 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.
- Publication:
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European Physical Journal B
- Pub Date:
- March 2018
- DOI:
- 10.1140/epjb/e2018-80714-8
- Bibcode:
- 2018EPJB...91...56W
- Keywords:
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- Solid State and Materials