Probing the pairing symmetry in kagome superconductors based on the single-particle spectrum

Abstract

We investigate the single-particle spectra of recently discovered kagome superconductors. We examine nine distinct superconducting pairing symmetries, including the uniform $s$-wave pairing function, nearest-neighbor and next-nearest-neighbor $s$-wave pairing, $p+ip$ pairing, $d+id$ pairing, and $f$-wave pairing states. These pairing states can be classified into irreducible representations of the $C_{6v}$ point group. Our findings suggest that these pairing states can be differentiated by analyzing the energy bands, spectral function, and local density of states. Additionally, we explore the single impurity effect, which could potentially assist in further distinguishing these pairing symmetries.

11 pages, 9 figures, To appear in Phys. Rev. B

References in corpus (27)

• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Unconventional Fermi surface instabilities in the Kagome Hubbard Model
• Superconductivity in the ${\mathbb{Z}}_2$ kagome metal KV${}_3$Sb${}_5$
• Superconductivity and normal-state properties of kagome metal RbV3Sb5 single crystals
• Nature of unconventional pairing in the kagome superconductors AV${}_3$Sb${}_5$
• Multiband superconductivity with sign-preserving order parameter in kagome superconductor CsV3Sb5
• Pressure-induced Reemergence of Superconductivity in Topological Kagome Metal CsV3Sb5
• s-wave superconductivity in kagome metal CsV${}_3$Sb${}_5$ revealed by ${}^{121/123}$Sb NQR and ${}^{51}$V NMR measurements
• Nodeless superconductivity in the kagome metal CsV${}_3$Sb${}_5$
• Highly-robust reentrant superconductivity in CsV3Sb5 under pressure
• 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)
• Microscopic evidence for anisotropic multigap superconductivity in the CsV${}_3$Sb${}_5$ kagome superconductor
• 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${}_5$
• Nodeless superconductivity in kagome metal CsV${}_3$Sb${}_5$ with and without time reversal symmetry breaking
• Electronic nematicity without charge density waves in titanium-based kagome metal
• Pressure-induced dimensional crossover in a kagome superconductor
• Superconductivity from repulsive interactions on the kagome lattice
• Chiral d-wave superconductivity on the honeycomb lattice close to the Mott state
• Unconventional superconductivity protected from disorder on the kagome lattice
• Superconducting pairing symmetry in the kagome-lattice Hubbard model
• Superconductivity in kagome metal YRu3Si2 with strong electron correlations
• Corner- and sublattice-sensitive Majorana zero modes on the kagome lattice
• Role of electronic correlations in the Kagome lattice superconductor LaRh${}_3$B${}_2$
• Diagnosis of pairing symmetry by vortex and edge spectra in kagome superconductors
• Electronic structure and spin-lattice relaxation in superconducting vortex states on the kagome lattice near van Hove filling

Cited by in corpus (7)

• Existence of Hebel-Slichter peak in unconventional kagome superconductors
• Impact of Charge Density Waves on Superconductivity and Topological Properties in AV${}_3$Sb${}_5$ Kagome Superconductors
• Pairing correlation of the Kagome-lattice Hubbard model with the nearest-neighbor interaction
• Probing Sign-Changing Order Parameters via Impurity States in unconventional superconductors: Implications for La${}_3$Ni${}_2$O${}_7$ Superconductors with interlayer pairing
• The possible frustrated superconductivity in the kagome superconductors
• Majorana edge states in s-wave kagome superconductors with Rashba interaction
• Layer-Resolved Impurity States Reveal Competing Pairing Mechanisms in Trilayer Nickelate Superconductor La${}_4$Ni${}_3$O${}_{10}$