Superconducting Properties and Absence of Time Reversal Symmetry Breaking in the Noncentrosymmetric Superconducting Compounds TaxRe1-x(0.1 <= x <= 0.25)*

Unconventional superconductivity, in particular, in noncentrosymmetric systems, has been a long-sought topic in condensed matter physics. Recently, Re-based superconductors have attracted great attention owing to the potential time-reversal symmetry breaking in their superconducting states. We report the superconducting properties of noncentrosymmetric compounds TaxRe1 - x with 0.1 <= x <= 0.25, and find that the superconducting transition temperature reaches a maximum of similar to 8 K at the optimal level x = 0.15. Nevertheless, muon-spin rotation and relaxation measurements reveal no time-reversal symmetry breaking existing in its superconducting state, which is in sharp contrast to both centrosymmetric Re metal and many other noncentrosymmetric Re-based superconductors.

Automated summary

The study reports the superconducting properties of noncentrosymmetric compounds TaxRe1-x, with a maximum superconducting transition temperature of around 8 K at the optimal level of x=0.15. However, muon-spin rotation and relaxation measurements reveal no time-reversal symmetry breaking in its superconducting state, contrasting with both centrosymmetric Re metal and many other noncentrosymmetric Re-based superconductors.