Phase transitions and spectral properties of the ionic Hubbard model in one dimension
Strongly Correlated Electrons
2011-11-07 v1
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.
Keywords
Cite
@article{arxiv.1111.1119,
title = {Phase transitions and spectral properties of the ionic Hubbard model in one dimension},
author = {Ara Go and Gun Sang Jeon},
journal= {arXiv preprint arXiv:1111.1119},
year = {2011}
}
Comments
8 pages, 8 figures