Pairing Symmetry Competition in Organic Superconductors

Abstract

A review is given on theoretical studies concerning the pairing symmetry in organic superconductors. In particular, we focus on (TMTSF)${}_2$X and $\kappa$-(BEDT-TTF)${}_2$X, in which the pairing symmetry has been extensively studied both experimentally and theoretically. Possibilities of various pairing symmetry candidates and their possible microscopic origin are discussed. Also some tests for determining the actual pairing symmtery are surveyed.

16 pages, 8 figures, to be published in J. Phys. Soc. Jpn., special issue on "Organic Conductors"

References in corpus (9)

• Unconventional critical behaviour in a quasi-two-dimensional organic conductor
• Theoretical Aspects of Charge Ordering in Molecular Conductors
• Comparison of the phase diagram of the half-filled layered organic superconductors with the phase diagram of the RVB theory of the Hubbard-Heisenberg model
• Triplet superconducting pairing and density-wave instabilities in organic conductors
• The Dependence of the Superconducting Transition Temperature of Organic Molecular Crystals on Intrinsically Non-Magnetic Disorder: a Signature of either Unconventional Superconductivity or Novel Local Magnetic Moment Formation
• Suppression of superconductivity by non-magnetic disorder in the organic superconductor (TMTSF)2(ClO4)(1-x)(ReO4)x
• Point-contact tunneling involving low-dimensional spin-triplet superconductors
• Ring Exchange Mechanism for Triplet Superconductivity in a Two-Chain Hubbard Model: Possible Relevance to Bechgaard Salts
• Spin-Triplet Superconductivity Mediated by Phonons in Quasi-One-Dimensional Systems

Cited by in corpus (43)

• Nodal Structure of Unconventional Superconductors Probed by the Angle Resolved Thermal Transport Measurements
• Theoretical Aspects of Charge Ordering in Molecular Conductors
• Strong electronic correlations in superconducting organic charge transfer salts
• First-principles structural optimization and electronic structure of the superconductor picene for various potassium doping levels
• Ab initio GW plus cumulant calculation for isolated band system: Application to organic conductor (TMTSF)2PF6 and transition-metal oxide SrVO3
• Fulde-Ferrell-Larkin-Ovchinnikov state induced by antiferromagnetic order in $\kappa$-type organic conductors
• From charge- and spin-ordering to superconductivity in the organic charge-transfer solids
• Near-degeneracy of extended $s+d_{x^2-y^2}$ and $d_{xy}$ order parameters in quasi-two-dimensional organic superconductors
• The Origin of the Charge Ordering and Its Relevance to Superconductivity in $\theta$-(BEDT-TTF)${}_2$X: The Effect of the Fermi Surface Nesting and the Distant Electron-Electron Interactions
• Electronic structure of solid coronene: differences and commonalities to picene
• Evidence for eight node mixed-symmetry superconductivity in a correlated organic metal
• Location of gap nodes in the organic superconductors $\kappa$-(ET)${}_2$Cu(NCS)${}_2$ and $\kappa$-(ET)${}_2$Cu[N(CN)${}_2$]Br determined by magnetocalorimetry
• Strong parity mixing in the FFLO superconductivity in systems with coexisting spin and charge fluctuations
• Theoretical aspects of the study on the new bismuth chalcogenide based superconductors
• Superconducting Pairing Symmetries in Anisotropic Triangular Quantum Antiferromagnets
• Superconductivity and quantum criticality in heavy fermions CeIrSi${}_3$ and CeRhSi${}_3$
• Superconducting gap function in the organic superconductor (TMTSF)2ClO4 with anion ordering; First-principles calculations and quasiclassical analysis for angle-resolved heat capacity
• Mixed order parameters, accidental nodes and broken time reversal symmetry in organic superconductors: a group theoretical analysis
• The Kohn-Luttinger effect and anomalous pairing in new superconducting systems and graphene
• Quantum FFLO state in clean layered superconductors
• Strong magnetic field enhancement of spin triplet pairing arising from coexisting $2k_F$ spin and $2k_F$ charge fluctuations
• Theoretical Aspects of Charge Correlations in $\theta$-(BEDT-TTF)${}_{2}X$
• Antiferromagnetic Spin Fluctuations and the Pseudogap in the Paramagnetic Phases of Quasi-Two-Dimensional Organic Superconductors
• Enhancement of Spin Susceptibility near Charge-Ordering Transition in a Two-Dimensional Extended Hubbard Model
• Antiferromagnetic Spin Fluctuations in the Metallic Phase of Quasi-Two-Dimensional Organic Superconductors
• Properties of superconductivity on the density wave background with small ungapped Fermi surface pockets
• Novel superconducting phenomena in quasi-one-dimensional Bechgaard salts
• Low temperature structural effects in the (TMTSF)${}_2$PF${}_6$ and AsF${}_6$ Bechgaard salts
• Strongly parity-mixed superconductivity in Rashba-Hubbard model
• Superconducting pairing symmetry on the extended Hubbard model in the presence of the Rashba-type spin-orbit coupling
• Mechanism for the Singlet to Triplet Superconductivity Crossover in Quasi-One-Dimensional Organic Conductors
• Superconductivity on the density wave background with soliton-wall structure
• Pairing competition in a quasi-one-dimensional model of organic superconductors (TMTSF)${}_{2}X$ in magnetic field
• $d$- and $p$-wave quantum liquid crystal orders in cuprate superconductors, $\kappa$-(BEDT-TTF)${}_2$X, and coupled chain Hubbard models: functional-renormalization-group analysis
• Microscopic theory of a superconducting gap in the quasi-one-dimensional organic conductor (TMTSF)${}_2$ClO${}_4$: Model derivation and two-particle self-consistent analysis
• Superconductivity without attraction in a quasi-one-dimensional metal
• Prediction of pseudogap formation due to $d$-wave bond-order in organic superconductor $\kappa$-(BEDT-TTF)${}_2$X
• Competition between different order parameters in a quasi-one-dimensional superconductor
• Ab initio GW calculation for organic compounds (TMTSF)2PF6
• Anomalous superconductivity and superfluidity in repulsive fermion systems
• Theory of triangular lattice quasi-one-dimensional charge-transfer solids
• Mixing of odd- and even-frequency pairings in strongly correlated electron systems under magnetic field
• Density Induced Quantum Phase Transitions in Triplet Superconductors