Nodeless superconductivity in noncentrosymmetric LaRhSn

Abstract

The superconducting order parameter of the noncentrosymmetric superconductor LaRhSn is investigated by means of low temperature measurements of the specific heat, muon-spin relaxation/rotation ($\mu$SR) and the tunnel-diode oscillator (TDO) based method. The specific heat and magnetic penetration depth [$\lambda (T)$] show an exponentially activated temperature dependence, demonstrating fully gapped superconductivity in LaRhSn. The temperature dependence of ${\lambda }^{-2}(T)$ deduced from the TDO based method and $\mu$SR show nearly identical behavior, which can be well described by a single-gap $s$-wave model, with a zero temperature gap value of $\Delta (0)=1.77(4)k_B{T}_c$. The zero-field $\mu$SR spectra do not show detectable changes upon cooling below $T_c$, and therefore there is no evidence for time-reversal-symmetry breaking in the superconducting state.

arXiv comment9 pages, 8 figures

References in corpus (42)

• Superconducting 2D system with lifted spin degeneracy: Mixed singlet-triplet state
• Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics
• Specific Heat of Mg ^{11}B_2
• Superconductivity and spin-orbit coupling in non-centrosymmetric materials: a review
• S-wave/spin-triplet order in superconductors without inversion symmetry: Li${}_2$Pd${}_3$B and Li${}_2$Pt${}_3$B
• Phenomenological two-gap model for the specific heat of MgB_2
• Properties of the Ideal Ginzburg-Landau Vortex Lattice
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Non-Abelian Topological Orders and Majorana Fermions in Spin-Singlet Superconductors
• 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
• Meissner - London state in superconductors of rectangular cross-section in perpendicular magnetic field
• Observation of Time-Reversal Symmetry Breaking in the Non-Centrosymmetric Superconductor Re6Zr
• Line nodes in the superconducting gap function of noncentrosymmetric CePt_3Si
• Recent progress on superconductors with time-reversal symmetry breaking
• Dirac Surface States and Nature of Superconductivity in Noncentrosymmetric BiPd
• Specific heat and $\mu$SR study on the noncentrosymmetric superconductor LaRhSi3
• Quantum-critical phase out of frustrated magnetism in a strongly correlated metal
• Time-reversal symmetry breaking in Re-based superconductors
• Evidence for two-gap superconductivity in the non-centrosymmetric compound LaNiC${}_2$
• Comparison of different methods for analyzing $\mu$SR line shapes in the vortex state of type-II superconductors
• Characteristic signatures of quantum criticality driven by geometrical frustration
• 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
• Evidence of nodal gap structure in the non-centrosymmetric superconductor Y2C3
• Investigations of the superconducting states of noncentrosymmetric LaPdSi3 and LaPtSi3
• Exotic Superconducting Properties in Topological Nodal Semimetal PbTaSe${}_2$
• Crystallographic and superconducting properties of the fully-gapped noncentrosymmetric 5d-electron superconductors CaMSi3 (M=Ir, Pt)
• Superconducting Properties of the Non-Centrosymmetric Superconductor Re6Hf
• Nodeless superconductivity in noncentrosymmetric PbTaSe${}_2$ single crystals
• Time-reversal-symmetry breaking and unconventional pairing in the noncentrosymmetric superconductor La${}_7$Rh${}_3$
• Evidence of Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric ThCoC${}_2$
• Anisotropic superconductivity in the noncentrosymmetric BiPd
• Superconductivity in the Hexagonal Ternary Phosphide ScIrP
• CaPtAs: a new noncentrosymmetric superconductor
• Probing the superconducting gap structure in the noncentrosymmetric topological superconductor ZrRuAs
• Fully-gapped superconductivity in single crystals of noncentrosymmetric Re${}_6$Zr with broken time-reversal symmetry
• $\mu$SR study of noncentrosymmetric superconductor PbTaSe${}_2$
• Synthesis and Superconducting Properties of a Hexagonal Phosphide ScRhP
• Antiferromagnetic correlations in strongly valence fluctuating CeIrSn
• Investigation of Superconducting Gap Structure in HfIrSi using muon spin relaxation/rotation
• Fully gapped superconductivity with preserved time reversal symmetry in noncentrosymmetric LaPdIn

Cited by in corpus (2)

• Magnetic phenomena in equiatomic ternary rare earth compounds
• Determination of the London penetration depth with the tunnel diode oscillator technique