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Time-reversal symmetry breaking in noncentrosymmetric superconductor Re6Hf:further evidence for unconventional behaviour in the alpha-Mn family of materials

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arxiv 1710.08598 v1 pith:5LPXF3QR submitted 2017-10-24 cond-mat.supr-con

Time-reversal symmetry breaking in noncentrosymmetric superconductor Re6Hf:further evidence for unconventional behaviour in the alpha-Mn family of materials

D. Singh , J. A. T. Barker , A. Thamizhavel , D. McK. Paul , A. D. Hillier , R. P. Singh This is my paper
classification cond-mat.supr-con
keywords unconventionalbreakingfamilyimportantre6hfsuperconductorssymmetrytime-reversal
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The discovery of new families of unconventional superconductors is important both experimentally and theoretically, especially if it challenges current models and thinking. By using muon spin relaxation in zero-field, time-reversal symmetry breaking has been observed in Re6Hf. Moreover, the temperature dependence of the superfluid density exhibits s-wave superconductivity with an enhanced electron-phonon coupling. This, coupled with the results from isostructural Re6Zr, shows that the Re6X family are indeed a new and important group of unconventional superconductors.

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