Mott Transition, Antiferromagnetism, and d-wave Superconductivity in Two-Dimensional Organic Conductors

Abstract

We study the Mott transition, antiferromagnetism and superconductivity in layered organic conductors using Cellular Dynamical Mean Field Theory for the frustrated Hubbard model. A d-wave superconducting phase appears between an antiferromagnetic insulator and a metal for $t^{\prime }/t=0.3-0.7$, or between a nonmagnetic Mott insulator (spin liquid) and a metal for $t^{\prime }/t\ge 0.8$, in agreement with experiments on layered organic conductors including $\kappa$-(ET)${}_2$Cu${}_2$(CN)${}_3$. These phases are separated by a strong first order transition. The phase diagram gives much insight into the mechanism for d-wave superconductivity. Two predictions are made.

5 pages, 4 figures

References in corpus (3)

• U(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3
• 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
• Cellular Dynamical Mean Field Theory for the 1D Extended Hubbard Model

Cited by in corpus (28)

• Cluster Dynamical Mean Field Theory of the Mott Transition
• From high temperature supercondutivity to quantum spin liquid: progress in strong correlation physics
• Strong electronic correlations in superconducting organic charge transfer salts
• Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application to $\kappa -(BEDT-TTF{)}_{2}C{u}_2(CN{)}_3$
• The Hubbard model on the triangular lattice: Spiral order and spin liquid
• Mott Transitions and d-wave Superconductivity in Half-Filled-Band Hubbard Model on Square Lattice with Geometric Frustration
• Finite temperature Mott transition in Hubbard model on anisotropic triangular lattice
• Bandwidth-controlled Mott transition in kappa-(BEDT-TTF)2Cu[N(CN)2]Br{x}Cl{1-x}: Optical studies of correlated carriers
• First order Mott transition at zero temperature in two dimensions: Variational plaquette study
• Nodal/Antinodal Dichotomy and the Two Gaps of a Superconducting Doped Mott Insulator
• Exact diagonalization study of Mott transition in the Hubbard model on an anisotropic triangular lattice
• Absence of superconductivity in the half-filled band Hubbard model on the anisotropic triangular lattice
• Self-consistent slave rotor mean field theory for strongly correlated systems
• Low energy theory of the t-t'-t''-U Hubbard Model at half-filling: interaction strengths in cuprate superconductors and an effective spin-only description of La_2CuO_4
• Symmetry of the superconducting order parameter in frustrated systems determined by the spatial anisotropy of spin correlations
• Magnetism and d-wave superconductivity on the half-filled square lattice with frustration
• Study of the Hubbard model on the triangular lattice using dynamical cluster approximation and dual fermion methods
• Towards the parameterisation of the Hubbard model for salts of BEDT-TTF: A density functional study of isolated molecules
• Non-local correlations in metals close to a charge order insulator transition
• Mottness on a triangular lattice
• Quantum critical transition from charge-ordered to superconducting state in the triangular lattice negative-U extended Hubbard model
• Superconducting Pairing Symmetries in Anisotropic Triangular Quantum Antiferromagnets
• Variational Monte Carlo Study of Electron Differentiation around Mott Transition
• Half-filled Hubbard Model on a Bethe lattice with next-nearest neighbor hopping
• Systematic Analysis of Frustration Effects in Anisotropic Checkerboard Lattice Hubbard Model
• Magnetic correlations around the Mott transition in the Kagomé lattice Hubbard model
• Non-universal behavior for aperiodic interactions within a mean-field approximation
• Zero-temperature Phase Diagram of Two Dimensional Hubbard Model