Phase diagram of the Mott Transition in a two-band Hubbard model in infinite dimensions

Abstract

The Mott metal-insulator transition in the two-band Hubbard model in infinite dimensions is studied by using the linearized dynamical mean-field theory recently developed by Bulla and Potthoff. The phase boundary of the metal-insulator transition is obtained analytically as a function of the on-site Coulomb interaction at the $d$-orbital, the charge-transfer energy between the $d$- and $p$-orbitals and the hopping integrals between $p-d$, $d-d$ and $p-p$ orbitals. The result is in good agreement with the numerical results obtained from the exact diagonalization method.

10 pages, 4 figures

Cited by in corpus (24)

• Self-energy-functional approach: Analytical results and the Mott-Hubbard transition
• Two-site dynamical mean-field theory
• Spin, charge and orbital fluctuations in a multi-orbital Mott insulator
• Mott transitions in correlated electron systems with orbital degrees of freedom
• Stability of a metallic state in the two-orbital Hubbard model
• Extended Hubbard model: Charge Ordering and Wigner-Mott transition
• Finite-temperature Mott transitions in multi-orbital Hubbard model
• Exact Insulating and Conducting Ground States of a Periodic Anderson Model in Three Dimensions
• Exact Ground States of the Periodic Anderson Model in D=3 Dimensions
• Metal-Insulator transitions in the periodic Anderson model
• Emery vs. Hubbard model for cuprate superconductors: a Composite Operator Method study
• Quantum phase transitions in the extended periodic Anderson model
• Two-site dynamical mean field theory for the dynamic Hubbard model
• Critical Behaviour near the Mott Metal-Insulator Transition in a Two-band Hubbard Model
• Stabilization of d-Band Ferromagnetism by Hybridization with Uncorrelated Bands
• Metal-insulator transition in the Hubbard model: a simple description including the Kondo effect
• Local correlation effects on the s+-- and s++-wave superconductivities mediated by magnetic and orbital fluctuations in the 5-orbital Hubbard model for iron pnictides
• Phase transitions in the Hubbard model for the bismuth nickelate
• Advanced multi-orbital impurity solver for dynamical mean field theory based on the equation of motion approach
• An exact solution to the Extended Hubbard Model in 2D for finite size system
• Off-site interaction effect in the Extended Hubbard Model with SCRPA method
• Symmetry breaking states in the half-filled two-orbital Hubbard model with crystalline electric field
• Evolution of the spectrum and the metal-insulator transition in local approximations for many-electron models
• Metal-Insulator transition in optical lattice system with site-dependent interactions