Superconductivity in noncentrosymmetric NbReSi investigated by muon spin rotation and relaxation

Abstract

Noncentrosymmetric materials are promising paradigm to explore unconventional superconductivity. In particular, several Re containing noncentrosymmetric materials have attracted considerable attention due to a superconducting state with a broken time reversal symmetry. A comprehensive study on the superconducting ground state of NbReSi was investigated using magnetization, resistivity, and muon spin rotation/relaxation measurements. Zero field muon spectroscopy results showed the absence of any spontaneous magnetic field below the superconducting transition temperature, T${}_c$ = 6.29 K, indicating the preserved time-reversal symmetry. Transverse field muon spin rotation measurements confirms a s-wave nature of the sample with $\Delta (0)/k_B{T}_c$ = 1.726. This study urges further investigation on more noncentrosymmetric materials to elucidate the selective appearance of unconventional nature and unveil its dependence on antisymmetric spin-orbit coupling strength.

arXiv comment7 Pages, 7 fugures

References in corpus (28)

• Topological Insulators
• Topological insulators and superconductors
• Heavy fermion superconductivity and magnetic order in non-centrosymmetric $CeP{t}_{3}Si$
• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• Enhancement of the upper critical field by nonmagnetic impurities in dirty two-gap superconductors
• Superconductivty without inversion symmetry: MnSi versus CePt_3Si
• Three-Dimensional Topological Insulators
• Very High Field Two-Band Superconductivity in LaFeAsO_0.89F_0.11
• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Topological phases and surface flat bands in superconductors without inversion symmetry
• Spin susceptibility in superconductors without inversion symmetry
• Observation of Time-Reversal Symmetry Breaking in the Non-Centrosymmetric Superconductor Re6Zr
• Types of topological surface states in nodal noncentrosymmetric superconductors
• Magnetoelectric effects in heavy-fermion superconductors without inversion symmetry
• Majorana Fermions in Nodal Superconductors: Gapless Topological Phase
• Time-reversal symmetry breaking in Re-based superconductors
• Enhancement of Superconducting Transition Temperature due to the strong Antiferromagnetic Spin Fluctuations in Non-centrosymmetric Heavy-fermion Superconductor CeIrSi3 :A 29Si-NMR Study under Pressure
• Multigap superconductivity in sesquicarbides La${}_2$C${}_3$ and Y${}_2$C${}_3$
• Time-reversal symmetry breaking in noncentrosymmetric superconductor Re6Hf:further evidence for unconventional behaviour in the alpha-Mn family of materials
• Simultaneous Nodal Superconductivity and Time-Reversal Symmetry Breaking in the Noncentrosymmetric Superconductor CaPtAs
• Time Reversal Symmetry Breaking in noncentrosymmetric superconductor Re6Ti
• Structure and superconductivity of two different phases of Re3W
• Hole-pocket-driven superconductivity and its universal features in the electron-doped cuprates
• Time-reversal-symmetry breaking and unconventional pairing in the noncentrosymmetric superconductor La${}_7$Rh${}_3$
• Enhanced $T_c$ and multiband superconductivity in the fully-gapped ReBe${}_{22}$ superconductor
• Time-reversal symmetry breaking and multigap superconductivity in the noncentrosymmetric superconductor La${}_7$Ni${}_3$
• Superconducting properties of the non-centrosymmetric Superconductors TaXSi (X= Re, Ru)

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