Phase transitions and spectral properties of the ionic Hubbard model in one dimension

Abstract

The ionic Hubbard model is investigated at half filling at zero temperature. We apply the cellular dynamical mean-field theory to the one-dimensional ionic Hubbard model to compute local quantities such as double occupancy and staggered charge density. Both quantities provide general transition behavior of the model from a band insulating phase to a Mott insulating phase. The renormalized band gap is introduced as an efficient order parameter for the transition from a band insulator. We also present the spectral properties of the ionic Hubbard model, which exhibit characteristic features for both weak and strong interactions.

8 pages, 8 figures

References in corpus (7)

• Sum-rules and bath-parametrization for quantum cluster theories
• Quantum Monte Carlo Study of an Interaction-Driven Band Insulator to Metal Transition
• Cellular Dynamical Mean Field Theory for the 1D Extended Hubbard Model
• Metallic phase in the two-dimensional ionic Hubbard model
• Electronic phase transitions in the half-filled ionic Hubbard model
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• Properties of the one-dimensional Hubbard model: cellular dynamical mean-field description

Cited by in corpus (8)

• Efficient hybridization fitting for dynamical mean-field theory via semi-definite relaxation
• Probing the bond order wave phase transitions of the ionic Hubbard model by superlattice modulation spectroscopy
• Competition between band and Mott insulator in the bilayer Hubbard model: a dynamical cluster approximation study
• Competition between disorder and Coulomb interaction in a two-dimensional plaquette Hubbard model
• Level statistics of the one-dimensional ionic Hubbard model
• Finite-temperature phase transitions in the ionic Hubbard model
• Emergent Half Metal at Finite Temperatures in a Mott Insulator
• Generalization of Lieb-Wu wave function inspired by one-dimensional ionic Hubbard model