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

Abstract

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.

5 pages, 2 figures Accepted Physical Review B, Rapid Communication

References in corpus (7)

• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Physical properties of the noncentrosymmetric superconductor Mg_10Ir_19B_16
• Specific heat and $\mu$SR study on the noncentrosymmetric superconductor LaRhSi3
• Comparison of different methods for analyzing $\mu$SR line shapes in the vortex state of type-II superconductors
• Physical properties of noncentrosymmetric superconductor LaIrSi3: A μSR study
• Comparative study of the centrosymmetric and non-centrosymmetric superconducting phases of Re3W using muon-spin spectroscopy and heat capacity measurements
• Probing the superconducting ground state of the noncentrosymmetric superconductors CaTSi3 (T = Ir, Pt) using muon-spin relaxation and rotation

Cited by in corpus (7)

• Simultaneous Nodal Superconductivity and Time-Reversal Symmetry Breaking in the Noncentrosymmetric Superconductor CaPtAs
• Nodeless superconductivity and time-reversal symmetry breaking in the noncentrosymmetric superconductor Re24Ti5
• Nodeless superconductivity and preserved time-reversal symmetry in the noncentrosymmetric Mo3P superconductor
• Type-I superconductivity in noncentrosymmetric superconductor AuBe
• Structure and superconductivity in the binary Re${}_{1-x}$Mo${}_x$ alloys
• Unconventional superconducting properties of noncentrosymmetric Re5.5Ta
• Investigations of the superconducting ground state of Zr${}_3$Ir: Introducing a new noncentrosymmetric superconductor