$g$-wave Pairing in BiS${}_2$ Superconductors

Abstract

Recent angle resolved photoemission spectroscopy(ARPES) experiments have suggested that BiS${}_2$ based superconductors are at very low electron doping. Using random phase approximation(RPA) and functional renormalization group(FRG) methods, we find that $g$-wave pairing symmetry belonging to A${}_{2g}$ irreducible representation is dominant at electron doping $x<0.25$. The pairing symmetry is determined by inter-pocket nesting and orbital characters on the Fermi surfaces and is robust in a two-orbital model including both Hund's coupling $J$, and Hubbard-like Coulomb interactions $U$ and $U^{\prime }$ with relatively small $J$ ($J\le 0.2U$). With the increasing electron doping, the g-wave state competes with both the s-wave $A_{1g}$ and d-wave $B_{2g}$ states and no pairing symmetry emerges dominantly.

published version, EPL(editor's choice)

References in corpus (15)

• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Funtional Renormalization Group Study of the Pairing Symmetry and Pairing Mechanism of the FeAs Based High Temperature Superconductors
• Superconductivity Appears in the Vicinity of an Insulating-Like Behavior in CeO${}_{1-x}$F${}_x$BiS${}_2$
• Nodal Spin Density Wave and band topology of the FeAs based materials
• Minimal electronic models for superconducting BiS${}_2$ layers
• Ferroelectric Soft Phonons, Charge Density Wave Instability and Strong Electron-Phonon Coupling in BiS2-Layered Superconductors
• Superconductivity induced by La doping in Sr1-xLaxFBiS2 system
• Antiferromagnetically Driven Electronic Correlation in Iron Pnictides and Cuprates
• Evolution of superconductivity in LaO1-xFxBiS2 prepared by high pressure technique
• Pairing symmetry in a two-orbital Hubbard model on a square lattice
• RPA Analysis of a Two-orbital Model for the BiS2-based Superconductors
• Unexpected Giant Superconducting Fluctuation and Anomalous Semiconducting Normal State in NdO1-xFxBi1-yS2 Single Crystals
• Electronic Structure of Single Crystalline NdO${}_{0.5}$F${}_{0.5}$BiS${}_2$ Studied by Angle-resolved Photoemission Spectroscopy
• Observation of anomalous temperature dependence of spectrum on small Fermi surfaces in a BiS2-based superconductor
• Low superfluid density and possible multi-gap superconductivity in BiS2-based layered superconductor Bi4O4S3

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