Mass-imbalance induced metal-insulator transition in a three-component Hubbard model
arXiv:1503.08972 · doi:10.1103/PhysRevB.91.115140
Abstract
The effects of mass imbalance in a three-component Hubbard model are studied by the dynamical mean-field theory combined with exact diagonalization. The model describes a fermion-fermion mixture of two different particle species with a mass imbalance. One species is two-component fermion particles, and the other is single-component ones. The local interaction between particle species is considered isotropically. It is found that the mass imbalance can drive the mixture from insulator to metal. The insulator-metal transition is a species-selective-like transition of lighter mass particles and occurs only at commensurate particle densities and moderate local interactions. For weak and strong local interactions the mass imbalance does not change the ground state of the mixture.
References in corpus (20)
- Many-Body Physics with Ultracold Gases
- A Mott insulator of fermionic atoms in an optical lattice
- Metallic and Insulating Phases of Repulsively Interacting Fermions in a 3D Optical Lattice
- Exact solution of the Falicov-Kimball model with dynamical mean-field theory
- Orbital-selective Mott transitions in the degenerate Hubbard model
- Realization of SU(2)*SU(6) Fermi System
- Orbital selective Mott transition in multi-band systems: slave-spin representation and dynamical mean-field theory
- Cluster Dynamical Mean Field analysis of the Mott transition
- Absence of a Slater Transition in The Two-Dimensional Hubbard Model
- Temperature and bath size in exact diagonalization dynamical mean field theory
- Collisional Stability of 40K Immersed in a Strongly Interacting Fermi Gas of 6Li
- Single Mott Transition in Multi-Orbital Hubbard Model
- Spin-1/2 fermions on spin-dependent optical lattices
- Mott transitions in ternary flavor mixtures of ultracold fermions on optical lattices
- Competing superfluid and density-wave ground-states of fermionic mixtures with mass imbalance in optical lattices
- Dimer, trimer and FFLO liquids in mass- and spin-imbalanced trapped binary mixtures in one dimension
- Mott transition of fermionic mixtures with mass imbalance in optical lattices
- Mott Transitions of Three-Component Fermionic Atoms with Repulsive Interaction in Optical Lattices
- Low temperature properties of the fermionic mixtures with mass imbalance in optical lattice
- Mott transitions in three-component Falicov-Kimball model
Cited by in corpus (5)
- Mott transitions in a three-component Falicov-Kimball model: A slave boson mean-field study
- Selective Kondo strong coupling in magnetic impurity flat-band lattices
- Fractionalization of long-range ordered states in a Falicov-Kimball model
- Dynamical recovery of SU(2) symmetry in the mass-quenched Hubbard model
- Interplay of mass imbalance and frustration in correlated band insulators