Abstract
We use point-contact spectroscopy to study the temperature and magnetic fielddependence of the superconducting gap of a non-centrosymmetric superconductorRe3W for the first time. The spectra can be fitted very well to the isotropic s-wave BTK theory.The superconducting gap determined depends on the temperature and magnetic field in thesame way as expected for the weak-coupling s-wave BCS superconductors. These resultssuggest that the contribution of the spin-triplet pairing channel can be negligible in theRe3W system.
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