Nodeless s-wave superconductivity in the α-Mn structure type noncentrosymmetric superconductor TaOs: A μSR study

Abstract

Noncentrosymmetric superconductors can lead to a variety of exotic properties in the superconducting state such as line nodes, multigap behavior, and time-reversal symmetry breaking. In this paper, we report the properties of the new noncentrosymmetric superconductor TaOs, using muon spin relaxation and rotation measurements. It is shown using the zero-field muon experiment that TaOs preserve the time-reversal symmetry in the superconducting state. From the transverse field muon measurements, we extract the temperature dependence of $\lambda (T)$ which is proportional to the superfluid density. This data can be fit with a fully gapped s-wave model for $\alpha$ = $\Delta (0)/k_B{T}_c$ = 2.01 $\pm$ 0.02. Furthermore, the value of magnetic penetration depth is found to be 5919 $\pm$ 45 \textÅ, which is consistent with the value obtained from the bulk measurements.

arXiv comment10 pages, 4 figures

References in corpus (30)

• Heavy fermion superconductivity and magnetic order in non-centrosymmetric $CeP{t}_{3}Si$
• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• S-wave/spin-triplet order in superconductors without inversion symmetry: Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Properties of the Ideal Ginzburg-Landau Vortex Lattice
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Time-Reversal Symmetry-Breaking Superconductivity in Heavy Fermion PrOs4Sb12 detected by Muon Spin Relaxation
• Spin Triplet Superconducting State due to Broken Inversion Symmetry in Li_2Pt_3B
• Superconductivity in quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$ with significant electron correlations
• Evidence for Time-Reversal-Symmetry-Broken Superconductivity in Locally Noncentrosymmetric SrPtAs
• Observation of Time-Reversal Symmetry Breaking in the Non-Centrosymmetric Superconductor Re6Zr
• Non-unitary triplet pairing in the centrosymmetric superconductor LaNiGa${}_2$
• Evidence for time-reversal symmetry breaking in superconducting PrPt4Ge12
• Specific heat and $\mu$SR study on the noncentrosymmetric superconductor LaRhSi3
• Time-reversal symmetry breaking in Re-based superconductors
• Absence of zero field muon spin relaxation induced by superconductivity in the B phase of UPt${}_3$
• Multigap superconductivity in sesquicarbides La${}_2$C${}_3$ and Y${}_2$C${}_3$
• Physical properties of the non-centrosymmetric superconductor Nb0.18Re0.82
• Time-reversal symmetry breaking in noncentrosymmetric superconductor Re6Hf:further evidence for unconventional behaviour in the alpha-Mn family of materials
• Broken time-reversal symmetry probed by muon spin relaxation in the caged type superconductor Lu${}_5$Rh${}_6$Sn${}_{18}$
• Time Reversal Symmetry Breaking in noncentrosymmetric superconductor Re6Ti
• Investigations of the superconducting states of noncentrosymmetric LaPdSi3 and LaPtSi3
• 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
• Muon spin rotation/relaxation measurements of the non-centrosymmetric superconductor Mg10Ir19B16
• $\mu$SR study of noncentrosymmetric superconductor PbTaSe${}_2$
• Multigap Superconductivity in Chiral Noncentrosymmetric TaRh${}_2$B${}_2$
• Superconducting properties of the noncentrosymmetric superconductor TaOs
• Time-reversal symmetry violation and the structure of Superconducting Order Parameter of PrOs${}_4$Sb${}_{12}$