Theoretical aspects of the study on the new bismuth chalcogenide based superconductors

Abstract

We review theoretical aspects of the studies on the recently discovered BiCh2 (Ch=chalcogen) based superconductors. We first focus on the electronic band structure, the Fermi surface and their correlation with the lattice structure. We then discuss the phonon features and the issue of the lattice instability. Finally, we survey the phonon-mediated as well as the unconventional pairing mechanisms that have been proposed so far.

27 pages, 17 figures

References in corpus (14)

• Superconductivity Appears in the Vicinity of an Insulating-Like Behavior in CeO${}_{1-x}$F${}_x$BiS${}_2$
• Minimal electronic models for superconducting BiS${}_2$ layers
• Ferroelectric Soft Phonons, Charge Density Wave Instability and Strong Electron-Phonon Coupling in BiS2-Layered Superconductors
• Pressure Study of BiS2-Based Superconductors Bi4O4S3 and La(O,F)BiS2
• RPA Analysis of a Two-orbital Model for the BiS2-based Superconductors
• In-plane Charge Fluctuations in Bismuth Sulfide Superconductors
• Checkerboard stripe electronic state on cleaved surface of NdO${}_{0.7}$F${}_{0.3}$BiS${}_2$ probed by scanning tunneling microscope
• Appearance of bulk Superconductivity under Hydrostatic Pressure in Sr0.5RE0.5FBiS2 (RE = Ce, Nd, Pr and Sm) compounds
• Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS${}_2$
• Fermi surfaces and orbital polarization in superconducting CeO${}_{0.5}$F${}_{0.5}$BiS${}_2$ revealed by angle-resolved photoemission spectroscopy
• Proximity to Fermi-surface topological change in superconducting LaO0.54F0.46BiS2
• Chemical pressure effect on superconductivity of BiS2-based Ce1-xNdxO1-yFyBiS2 and Nd1-zSmzO1-yFyBiS2
• BCS-like superconductivity in NdO${}_{1-x}$F${}_x$BiS${}_2$ ($x$ = 0.3 and 0.5) single crystals
• Testing the $d_{x^2-y^2}^{\ast }$-wave pairing symmetry by quasiparticle interference in BiS${}_2$-based superconductors

Cited by in corpus (17)

• Superconductivity in REO0.5F0.5BiS2 with high-entropy-alloy-type blocking layers
• SnAs-based layered superconductor NaSn2As2
• Evolution of Anisotropic Displacement Parameters and Superconductivity with Chemical Pressure in BiS2-Based REO0.5F0.5BiS2 (RE = La, Ce, Pr, and Nd)
• Weak phonon-mediated pairing in BiS${}_2$ superconductor from first principles
• Bulk Superconductivity Induced by In-plane Chemical Pressure Effect in Eu0.5La0.5FBiS2-xSex
• Strong bilayer coupling induced by the symmetry breaking in the monoclinic phase of BiS${}_2$-based superconductors
• Prediction of the High Thermoelectric Performance of Pnictogen Dichalcogenide Layered Compounds with Quasi-One-Dimensional Gapped Dirac-like Band Dispersion
• Synthesis, Crystal Structure, and Physical Properties of New Layered Oxychalcogenide La2O2Bi3AgS6
• Charge/quadrupole fluctuations and gap anisotropy in BiS${}_2$-based superconductors
• Bulk Superconductivity Induced by Se Substitution in BiCh2-Based Layered Compounds Eu0.5Ce0.5FBiS2-xSex
• First-principles study of LaOPbBiS${}_3$ and its analogous compounds as thermoelectric materials
• Superconductivity of Electron-Doped NdOBiS2 by Substitution of Mixed-Valence Ce ions
• Observation of supermodulation in LaO0.5F0.5BiSe2 by scanning tunneling microscopy and spectroscopy
• Direct Observation of an Incommensurate Charge Density Wave in the BiS2-based Superconductor NdO1-xFxBiS2
• Lattice Anharmonicity in BiS2-Based Layered Superconductor RE(O,F)BiS2 (RE = La, Ce, Pr, Nd)
• Bulk superconductivity induced by Se substitution in self-doped BiCh2-based compound CeOBiS2-xSex
• The upper critical field in the BiCh2-based superconductors CeOBiS1.7Se0.3 and PrO0.5F0.5BiS2-xSex (x = 0, 0.3)