Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$

Abstract

The results from muon spin relaxation experiments on the non-centrosymmetric intermetallic superconductor LaNiC${}_2$ are reported. We find that the onset of superconductivity coincides with the appearance of spontaneous magnetic fields, implying that in the superconducting state time reversal symmetry is broken. An analysis of the possible pairing symmetries suggests only four triplet states compatible with this observation, all of which are non-unitary. They include the intriguing possibility of triplet pairing with the full point group symmetry of the crystal, which is only possible in a non-centrosymmetric superconductor.

4+ pages, 2 tables, 4 figures

References in corpus (7)

• Topological spin-current in non-centrosymmetric superconductors
• Order parameter in superconductors with non-degenerate bands
• Gap structure in noncentrosymmetric superconductors
• Strong-Coupling Superconductivity of CeIrSi${}_3$ with the Non-centrosymmetric Crystal Structure
• Magnetic Properties in Non-centrosymmetric Superconductors with and without Antiferromagnetic Order
• Low-energy magnetic response of the noncentrosymmetric heavy-fermion superconductor CePt3Si studied via inelastic neutron scattering
• Magnetic field dependence of the superconducting gap node topology in non-centrosymmetric CePt${}_3$Si

Cited by in corpus (95)

• Unconventional Superconductivity
• Topological surface states in nodal superconductors
• Surface density of states and topological edge states in non-centrosymmetric superconductors
• Microscopic evidence for anisotropic multigap superconductivity in the CsV${}_3$Sb${}_5$ kagome superconductor
• Specific heat and $\mu$SR study on the noncentrosymmetric superconductor LaRhSi3
• Time-reversal symmetry breaking in noncentrosymmetric superconductor Re6Hf:further evidence for unconventional behaviour in the alpha-Mn family of materials
• Theory of superconductivity with non-Hermitian and parity-time reversal symmetric cooper pairing symmetry
• A comprehensive review on topological superconducting materials and interfaces
• Relativistic analysis of the pairing symmetry of the noncentrosymmetric superconductor LaNiC${}_2$
• 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
• Broken time-reversal symmetry probed by muon spin relaxation in the caged type superconductor Lu${}_5$Rh${}_6$Sn${}_{18}$
• Physical properties of noncentrosymmetric superconductor LaIrSi3: A μSR study
• Superconducting and normal-state properties of the noncentrosymmetric superconductor Re6Zr
• Muon spin rotation study of magnetism and superconductivity in Ba(Fe1-xCox)2As2 single crystals
• Comparative study of the centrosymmetric and non-centrosymmetric superconducting phases of Re3W using muon-spin spectroscopy and heat capacity measurements
• Unconventional superconductivity in the cage type compound Sc${}_5$Rh${}_6$Sn${}_{18}$
• Pressure effects on the unconventional superconductivity of the noncentrosymmetric LaNiC2
• Nodeless superconductivity and preserved time-reversal symmetry in the noncentrosymmetric Mo3P superconductor
• Muon-spin relaxation study of the layered kagome superconductor CsV${}_3$Sb${}_5$
• muSR and Magnetometry Study of the Type-I Superconductor BeAu
• CaPtAs: a new noncentrosymmetric superconductor
• Type-I superconductivity in noncentrosymmetric superconductor AuBe
• Spin-triplet superconductivity in Weyl nodal-line semimetals
• Studies of the superconducting properties of Sn1-xInxTe (x=0.38 to 0.45) using muon-spin spectroscopy
• Probing the superconducting ground state of the noncentrosymmetric superconductors CaTSi3 (T = Ir, Pt) using muon-spin relaxation and rotation
• Heat capacity double transitions in time-reversal symmetry broken superconductors
• Time-reversal symmetry breaking and multigap superconductivity in the noncentrosymmetric superconductor La${}_7$Ni${}_3$
• Structure and superconductivity in the binary Re${}_{1-x}$Mo${}_x$ alloys
• Full-gap superconductivity in non-centrosymmetric Re${}_6$Zr, Re${}_{27}$Zr${}_5$ and Re${}_{24}$Zr${}_5$
• Kondo Effect in the Presence of Spin-Orbit Coupling
• Intrinsic nature of spontaneous magnetic fields in superconductors with time-reversal symmetry breaking
• Broken Time Reversal Symmetry in Superconducting Pr1-xCexPt4Ge12
• Nonunitary Superconductivity in Complex Quantum Materials
• Mechanism of High-Temperature Superconductivity in Correlated-Electron Systems
• Unconventional superconducting properties of noncentrosymmetric Re5.5Ta
• Spontaneous time-reversal symmetry breaking by disorder in superconductors
• Theory of tunneling spectroscopy for chiral topological superconductors
• Investigations of the superconducting ground state of Zr${}_3$Ir: Introducing a new noncentrosymmetric superconductor
• Time-Reversal Symmetry Breaking Superconductivity in Three-Dimensional Dirac Semimetallic Silicides
• Origin of the anomalous Hall effect in two-band chiral superconductors
• Time-reversal symmetry breaking in Re-based superconductors: Recent developments
• Time-reversal symmetry breaking in frustrated superconductor Re${}_2$Hf
• Superconducting properties of the non-centrosymmetric Superconductors TaXSi (X= Re, Ru)
• Nodeless superconductivity in the centro- and noncentrosymmetric rhenium-boron superconductors
• Muon spin rotation and infrared spectroscopy study of magnetism and superconductivity in Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$
• Evidence of fully-gapped superconductivity in NbReSi: A combined $\mu$SR and NMR study
• $\mu$SR and inelastic neutron scattering investigations of the noncentrosymmetric antiferromagnet CeNiC${}_2$
• Fully gapped superconductivity with preserved time reversal symmetry in noncentrosymmetric LaPdIn
• Conventional type-II superconductivity in locally non-centrosymmetric LaRh${}_2$As${}_2$ single crystals
• Fully gapped superconductivity in centrosymmetric and non-centrosymmetric Re-B compounds probed with $\mu$SR
• Thermodynamic transitions and topology of spin-triplet superconductivity: Application to UTe${}_2$
• Two-Gap Time Reversal Symmetry Breaking Superconductivity in Non-Centrosymmetric LaNiC2
• Fermi surface effect on spontaneous breaking of time-reversal symmetry in unconventional superconducting films
• Evidence for the coexistence of time-reversal symmetry breaking and Bardeen-Cooper-Schrieffer-like superconductivity in La${}_7$Pd${}_3$
• Superconducting properties of the noncentrosymmetric superconductor TaOs
• High-order Time-Reversal Symmetry Breaking Normal State
• Nodeless superconductivity in Lu${}_{5-x}$Rh${}_6$Sn${}_{18+x}$ with broken time reversal symmetry
• Superconductivity in noncentrosymmetric NbReSi investigated by muon spin rotation and relaxation
• Nodeless superconductivity in noncentrosymmetric LaRhSn
• Nodeless superconductivity in quasi-one-dimensional Nb2PdS5: A muSR study
• Crystal growth and properties of the non-centrosymmetric superconductor, Ru7B3
• Spontaneous magnetization in unitary superconductors with time reversal symmetry breaking
• Signature of Anomalous Andreev bound states in magnetic Josephson junction of noncentrosymmetric superconductor on a topological insulator
• Supercurrent Diode Effect in Josephson Interferometers with Multiband Superconductors
• Fully-gapped superconductivity and topological aspects of the noncentrosymmetric TaReSi superconductor
• Time reversal symmetry breaking and s-wave superconductivity in CaPd2Ge2: A $\mu$SR study
• Quantum muon diffusion and the preservation of time-reversal symmetry in the superconducting state of type-I rhenium
• Time-reversal symmetry breaking from lattice dislocations in superconductors
• Proximity effect of time-reversal symmetry broken non-centrosymmetric superconductors
• Singlet-triplet mixing in the order parameter of the noncentrosymmetric superconductor Ru${}_7$B${}_3$
• Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa${}_2$
• Time-reversal symmetry breaking in superconducting low-carrier-density quasi-skutterudite Lu3Os4Ge13
• Nodeless time-reversal symmetry breaking in the centrosymmetric superconductor Sc${}_5$Co${}_4$Si${}_{10}$ probed by muon-spin spectroscopy
• Spin-orbit-coupled superconductivity with spin-singlet non-unitary pairing
• Machine Learning approach to muon spectroscopy analysis
• Nodeless superconductivity in 4H${}_b$-TaS${}_2$ with broken time reversal symmetry
• A Family of Lanthanide Noncentrosymmetric Superconductors La${}_4$$TX$ ($T$ = Ru, Rh, Ir; $X$ = Al, In)
• Surface Bound States and Spontaneous Current in Cyclic d-Wave Superconductors
• Muon spin rotation and relaxation study on topological noncentrosymmetric superconductor PbTaSe${}_2$
• Anisotropic superconductivity and unusually robust electronic critical field in single crystal La${}_7$Ir${}_3$
• Multiband superconductivity in the topological Kramers nodal-line semimetals
• Time reversal invariant single gap superconductivity with upper critical field larger than Pauli limit in NbIr${}_2$B${}_2$
• Probing the superconducting pairing of the La${}_4$Be${}_{33}$Pt${}_{16}$ alloy via muon-spin spectroscopy
• Anisotropic differential conductance of a mixed parity superconductor/ferromagnet structure
• Anisotropic superconducting gap probed by ${}^{125}$Te NMR in noncentrosymmetric Sc${}_{6}M$Te${}_2$ ($M$ = Fe, Co)
• Pressure induced superconducting dome in LaNiGa2
• Mo${}_3$ReRuC: A noncentrosymmetric superconductor formed in the MoReRu-Mo${}_2$C system
• Evidence of s-wave superconductivity in the noncentrosymmetric La${}_7$Ir${}_3$
• Topological Surface Superconductivity Induced by Hydrostatic Pressure-Enhanced Antisymmetric Spin-Orbit Coupling in Non-Centrosymmetric Superconductor PbTaSe2
• NbReSi: A Noncentrosymetric Superconductor with Large Upper Critical Field
• Broken time-reversal symmetry detected by tunneling spectroscopy of superconducting Pd-doped CaAgP
• Pair-mixing induced Time-reversal-breaking superconductivity
• Nonequilibrium Green's function approach to multi-band Cooper-pair transport: linear magnetoresistance effect due to nonunitary superconductivity
• Exotic Topological Phenomena in Chiral Superconducting States on Doped Quantum Spin Hall Insulators with Honeycomb Lattices