Here, the authors report on the superconducting properties of the ternary noncentrosymmetric superconductor Re₈NbTa, a new member of the Re-based superconductors that are known for the frequent occurrence of time-reversal symmetry breaking and their complex superconducting ground states. Bulk and transverse field muon spin rotation/relaxation ({μ}SR) measurements confirm moderately coupled, fully gapped superconductivity. However, zero-field {μ}SR measurements indicate the possible presence of spin fluctuation/time-reversal symmetry breaking in the superconducting ground state, suggesting the unconventional superconductivity in Re₈NbTa.
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Kushwaha et al. (2024) studied this question.
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