s-wave superconductivity in kagome metal CsV${}_3$Sb${}_5$ revealed by ${}^{121/123}$Sb NQR and ${}^{51}$V NMR measurements

Abstract

We report ${}^{121/123}$Sb nuclear quadrupole resonance (NQR) and ${}^{51}$V nuclear magnetic resonance (NMR) measurements on kagome metal CsV${}_3$Sb${}_5$ with $T_{\mathrm{c}}=2.5$ K. Both ${}^{51}$V NMR spectra and ${}^{121/123}$Sb NQR spectra split after a charge density wave (CDW) transition, which demonstrates a commensurate CDW state. The coexistence of the high temperature phase and the CDW phase between $91$ K and $94$ K manifests that it is a first order phase transition. At low temperature, electric-field-gradient fluctuations diminish and magnetic fluctuations become dominant. Superconductivity emerges in the charge order state. Knight shift decreases and $1/T_{1}T$ shows a Hebel--Slichter coherence peak just below $T_{\mathrm{c}}$, indicating that CsV${}_3$Sb${}_5$ is an s-wave superconductor.

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Cited by in corpus (116)

• Topological kagome magnets and superconductors
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• Electronic Nature of Charge Density Wave and Electron-Phonon Coupling in Kagome Superconductor KV${}_3$Sb${}_5$
• Fermi surface mapping and the nature of charge density wave order in the kagome superconductor CsV${}_3$Sb${}_5$
• Kagome superconductors AV${}_3$Sb${}_5$ (A=K, Rb, Cs)
• Multiband superconductivity with sign-preserving order parameter in kagome superconductor CsV3Sb5
• Twofold symmetry of $c$-axis resistivity in topological kagome superconductor CsV${}_3$Sb${}_5$ with in-plane rotating magnetic field
• Three-state nematicity and magneto-optical Kerr effect in the charge density waves in kagome superconductors
• Charge density wave in kagome lattice intermetallic ScV6Sn6
• Quantum states and intertwining phases in kagome materials
• AV${}_3$Sb${}_5$ Kagome Superconductors: Progress and Future Directions
• Nodeless electron pairing in CsV${}_3$Sb${}_5$-derived kagome superconductors
• Mechanism of exotic density-wave and beyond-Migdal unconventional superconductivity in kagome metal AV3Sb5 (A=K, Rb, Cs)
• Quantum transport evidence of topological band structures of kagome superconductor CsV3Sb5
• Competition of superconductivity and charge density wave in selective oxidized CsV3Sb5 thin flakes
• Microscopic evidence for anisotropic multigap superconductivity in the CsV${}_3$Sb${}_5$ kagome superconductor
• Superconducting diode effect and interference patterns in Kagome CsV3Sb5
• Possible star-of-David pattern charge density wave with additional modulation in the kagome superconductor CsV${}_3$Sb${}_5$
• Charge-Density-Wave-Induced Peak-Dip-Hump Structure and the Multiband Superconductivity in a Kagome Superconductor CsV${}_3$Sb${}_5$
• Loop currents in $A$V${}_3$Sb${}_5$ kagome metals: multipolar and toroidal magnetic orders
• Double-dome superconductivity under pressure in the V-based Kagome metals AV3Sb5 (A = Rb and K)
• Bulk evidence of anisotropic $s$-wave pairing with no sign change in the kagome superconductor CsV${}_3$Sb${}_5$
• Spatial symmetry constraint of charge-ordered kagome superconductor CsV${}_3$Sb${}_5$
• Conjoined Charge Density Waves in the Kagome Superconductor CsV3Sb5
• No observation of chiral flux current in the topological kagome metal CsV${}_3$Sb${}_5$
• Geometry of the charge density wave in kagom$\acute{e}$ metal AV${}_3$Sb${}_5$
• Nodeless superconductivity in kagome metal CsV${}_3$Sb${}_5$ with and without time reversal symmetry breaking
• Pressure-induced dimensional crossover in a kagome superconductor
• Role of Sb in the superconducting kagome metal CsV${}_3$Sb${}_5$ revealed by its anisotropic compression
• Superconductivity from repulsive interactions on the kagome lattice
• Anomalous thermal Hall effect and anomalous Nernst effect of CsV${}_3$Sb${}_5$
• Theory of nematic charge orders in kagome metals
• Charge-4e and charge-6e flux quantization and higher charge superconductivity in kagome superconductor ring devices
• Strain-sensitive superconductivity in kagome metals KV${}_3$Sb${}_5$ and CsV${}_3$Sb${}_5$ probed by point-contact spectroscopy
• Large kagome family candidates with topological superconductivity and charge density waves
• Interplay between Pair Density Wave and a Nested Fermi Surface
• First-principles study on the double-dome superconductivities in kagome material CsV${}_3$Sb${}_5$ under pressure
• Crucial role of out-of-plane Sb-$p$ orbitals in Van Hove singularity formation and electronic correlation for superconducting Kagome metal CsV${}_3$Sb${}_5$
• Emergent nematicity and intrinsic vs. extrinsic electronic scattering processes in the kagome metal CsV${}_3$Sb${}_5$
• Gapless excitations inside the fully gapped kagome superconductors AV${}_3$Sb${}_5$
• Evolution of electronic structure in pristine and hole-doped kagome metal RbV${}_3$Sb${}_5$
• Commensurate-to-incommensurate transition of charge-density-wave order and a possible quantum critical point in pressurized kagome metal CsV${}_3$Sb${}_5$
• Dynamical Study of the Origin of the Charge Density Wave in $A$V${}_3$Sb${}_5$ ($A=$K, Rb, Cs) Compounds
• Screening promising CsV3Sb5-like kagome materials from systematic first-principles evaluation
• Muon-spin relaxation study of the layered kagome superconductor CsV${}_3$Sb${}_5$
• Unconventional superconductivity protected from disorder on the kagome lattice
• Tiny Sc allows the chains to rattle: Impact of Lu and Y doping on the charge density wave in ScV${}_6$Sn${}_6$
• Novel three-dimensional Fermi surface and electron-correlation-induced charge density wave in FeGe
• Electronic properties of correlated kagomé metals AV${}_3$Sb${}_5$(A = K, Rb, Cs): A perspective
• Superconducting pairing symmetry in the kagome-lattice Hubbard model
• Electronic Landscape of Kagome Superconductors $\text{A}$V${}_3$Sb${}_5$ ($\text{A}$ = K, Rb, Cs) from Angle-Resolved Photoemission Spectroscopy
• Monolayer Kagome Metals AV${}_3$Sb${}_5$
• Altermagnetic Ground State in Distorted Kagome Metal CsCr${}_3$Sb${}_5$
• 3D Fermi surfaces from charge order in layered CsV${}_3$Sb${}_5$
• Superconductivity from Orbital-Selective Electron-Phonon Coupling in $A{\mathrm{V}}_3{\mathrm{Sb}}_5$
• Superconductivity modulated by structural phase transitions in pressurized vanadium-based kagome metals
• Evolution of superconductivity and charge order in pressurized RbV${}_3$Sb${}_5$
• Distinct band reconstructions in kagome superconductor CsV${}_3$Sb${}_5$
• The structure of kagome superconductors CsV${}_3$Sb${}_5$ in the charge density wave states
• Unconventional gapping behavior in a kagome superconductor
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• Strong-coupling superconductivity and weak vortex pinning in Ta-doped CsV${}_3$Sb${}_5$ single crystals
• Tri-Hexagonal charge order in kagome metal CsV${}_3$Sb${}_5$ revealed by ${}^{121}$Sb NQR
• FeGe as a building block for the kagome 1:1, 1:6:6, and 1:3:5 families: hidden d-orbital decoupling of flat band sectors, effective models and interaction Hamiltonians
• Kagome metals
• Chiral-Flux-Phase-Based Topological Superconductivity in Kagome Systems with Mixed Edge Chiralities
• Kagome Materials I: SG 191, ScV${}_6$Sn${}_6$. Flat Phonon Soft Modes and Unconventional CDW Formation: Microscopic and Effective Theory
• Crossover between electron-electron and electron-phonon mediated pairing on the Kagome lattice
• Violation of Emergent Rotational Symmetry in the Hexagonal Kagome Superconductor CsV3Sb5
• Similarities and Differences in the Fermiology of Kagome Metals AV${}_3$Sb${}_5$ (A=K, Rb, Cs) Revealed by Shubnikov-de Haas Oscillations
• Classification of Lifshitz invariant in multiband superconductors: an application to Leggett modes in the linear response regime in Kagome lattice models
• Observation of anomalous amplitude modes in the kagome metal CsV${}_3$Sb${}_5$
• Electronic structure and spin-lattice relaxation in superconducting vortex states on the kagome lattice near van Hove filling
• Existence of Hebel-Slichter peak in unconventional kagome superconductors
• AV${}_3$Sb${}_5$ kagome superconductors: a review with transport measurements
• Condensation of preformed charge density waves in kagome metals
• Impact of the orbital current order on the superconducting properties of the kagome superconductors
• Non-degenerate surface pair density wave in the Kagome superconductor CsV${}_3$Sb${}_5$ -- application to vestigial orders
• Two elementary band representation model, Fermi surface nesting, and surface topological superconductivity in $A$V${}_3$Sb${}_5$ ($A=\text{K, Rb, Cs}$)
• Interplay between Chiral Charge Density Wave and Superconductivity in Kagome Superconductors: A Self-consistent Theoretical Analysis
• A density-wave-like transition in the polycrystalline V3Sb2 sample with bilayer kagome lattice
• Kagome materials $A$V${}_3$Sb${}_5$ ($A$=K,Rb,Cs): pairing symmetry and pressure-tuning studies
• Superconductivity and a van Hove singularity confined to the surface of a topological semimetal
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• Conventional Superconductivity in the Doped Kagome Superconductor Cs(V0.86Ta0.14)3Sb5 from Vortex Lattice Studies
• Probing the pairing symmetry in kagome superconductors based on the single-particle spectrum
• Fully-gapped superconductivity with rotational symmetry breaking in pressurized kagome metal CsV${}_3$Sb${}_5$
• Tuning electronic pairing by uniaxial strain in kagome lattices
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• Photoemission Insights to Electronic Orders in Kagome Superconductor AV3Sb5
• Quantum Phase Transition as a Promising Route to Enhance the Critical Current in Kagome Superconductor CsV${}_3$Sb${}_5$
• The de Haas-van Alphen quantum oscillations in the kagome metal RbTi3Bi5
• Orbital selective commensurate modulations of the local density of states in ScV6Sn6 probed by nuclear spins
• Topological Superconducting States and Quasiparticle Transport on Kagome Lattice
• Magnetic properties of pressurized CsV${}_3$Sb${}_5$ calculated by using a hybrid functional
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• Charge-density wave fluctuation driven composite order in the layered Kagome Metals
• Impact of charge-density-wave pattern on the superconducting gap in V-based kagome superconductors
• Impact of Charge Density Waves on Superconductivity and Topological Properties in AV${}_3$Sb${}_5$ Kagome Superconductors
• Magnetoresistance hysteresis in the superconduting state of Kagome CsV${}_3$Sb${}_5$
• Calculated Unconventional Superconductivity via Charge Fluctuations in Kagome Metal CsV3Sb5
• Nonequilibrium control of kagome metals
• Recent progress in quantum spin liquids, fractional magnetization plateaus, and unconventional superconductivity in kagome lattices
• Nonmagnetic Phase Transition in La${}_3$TiSb${}_5$ Observed in ${}^{121}$Sb Nuclear Quadrupole Resonance
• The possible frustrated superconductivity in the kagome superconductors
• Majorana edge states in s-wave kagome superconductors with Rashba interaction
• Strain-Tuned Nodal Superconductivity in the Charge-Ordered Kagome Metal CsV${}_3$Sb${}_5$
• Microscopic evidence for imaginary charge density wave in a kagome metal
• Absence of magnetic order and magnetic fluctuations in RuO${}_2$
• Hexagonal-to-base-centered-orthorhombic $4Q$ charge density wave order in kagome metals KV${}_3$Sb${}_5$, RbV${}_3$Sb${}_5$, and CsV${}_3$Sb${}_5$
• Effective Ionic Valence and Local Magnetic Moment in Kagome Superconductors