Symmetry breaking states in the half-filled two-orbital Hubbard model with crystalline electric field

Abstract

We investigate the half-filled two-orbital Hubbard model with the crystalline electric field using dynamical mean-field theory combined with the continuous-time quantum Monte Carlo simulations. We systematically study how the interplay of the intra- and interorbital Coulomb interations together with the Hund coupling realizes the diagonal and off-diagonal ordered states. It is found that the antiferroorbital ordered state is realized in the Hubbard model, in addition to the antiferromagnetically ordered and excitonic states. The competition between the antiferroorbital ordered and excitonic states close to the band insulating state is addressed.

arXiv comment6 pages, 6 figures

References in corpus (44)

• Continuous-time Monte Carlo methods for quantum impurity models
• A continuous-time solver for quantum impurity models
• The ALPS project release 2.0: Open source software for strongly correlated systems
• Evidence for an excitonic insulator phase in 1T-TiSe${}_2$
• Anomalous Normal-State Properties of High-T${}_c$ Superconductors -- Intrinsic Properties of Strongly Correlated Electron Systems?
• Orbital-selective Mott transitions in the degenerate Hubbard model
• Strongly Correlated Superconductivity
• Non-thermal separation of electronic and structural orders in a persisting charge density wave
• Orthorhombic-to-Monoclinic Phase Transition of Ta2NiSe5 Induced by the Bose-Einstein Condensation of Excitons
• Ultrafast Electronic Band Gap Control in an Excitonic Insulator
• Excitonic Bose-Einstein condensation in Ta2NiSe5 above room temperature
• Chiral charge-density-waves
• Microscopic conditions favoring itinerant ferromagnetism: Hund's rule coupling and orbital degeneracy
• Integer filling metal insulator transitions in the degenerate Hubbard model
• Unified understanding of superconductivity and Mott transition in alkali-doped fullerides from first principles
• Strong Coupling Nature of the Excitonic Insulator State in Ta${}_2$NiSe${}_5$
• Spin, charge and orbital fluctuations in a multi-orbital Mott insulator
• Ferromagnetism in the Hubbard model with orbital degeneracy in infinite dimensions
• Multi-Orbital Hubbard Model in Infinite Dimensions: Quantum Monte Carlo Calculation
• Transport and Magnetic Studies on the Spin State Transition of Pr1-xCaxCoO3 up to High Pressure
• Electronic orders in multi-orbital Hubbard models with lifted orbital degeneracy
• Stability of a metallic state in the two-orbital Hubbard model
• Excitonic Instability at the Spin-State Transition in the Two-Band Hubbard Model
• Phase diagram and collective excitation in excitonic insulator: from the orbital physics viewpoint
• Superconductivity in the Two-Band Hubbard Model in Infinite Dimensions
• Excitonic condensation of strongly correlated electrons: the case of Pr${}_{0.5}$Ca${}_{0.5}$CoO${}_3$
• Spontaneous orbital-selective Mott transitions and the Jahn-Teller metal of A${}_3$C${}_{60}$
• J-freezing and Hund's rules in spin-orbit-coupled multiorbital Hubbard models
• Charge-density wave induced by combined electron-electron and electron-phonon interactions in 1$T$-TiSe${}_2$: A variational Monte Carlo study
• Roles of Hund's rule coupling in excitonic density-wave states
• Competition between excitonic charge and spin density waves: Influence of electron-phonon and Hund's rule couplings
• Magnetic field effects in a correlated electron system with spin-state degree of freedom - Implication of an excitonic insulator -
• Phase diagram of exciton condensate in doped two-band Hubbard model
• Phase diagram of the Mott Transition in a two-band Hubbard model in infinite dimensions
• Superconductivity in the two-band Hubbard model
• Heavy Quasi-Particle in the Two-Orbital Hubbard Model
• FFLO Excitonic State in the Three-Chain Hubbard Model for Ta${}_2$NiSe${}_5$
• Low-energy excitation spectra in the excitonic phase of cobalt oxides
• Effects of degenerate orbitals on the Hubbard model
• Magnetic phase diagram of the Hubbard model with next-nearest-neighbour hopping
• Spontaneously orbital-selective superconductivity in a three-orbital Hubbard model
• Excitonic Insulator State of the Extended Falicov-Kimball Model in the Cluster Dynamical Impurity Approximation
• Critical Behaviour near the Mott Metal-Insulator Transition in a Two-band Hubbard Model
• Theory of Orbital Susceptibility on Excitonic Insulator

Cited by in corpus (1)

• Ferromagnetically ordered metal in the single-band Hubbard model