Doping driven metal-insulator transitions and charge orderings in the extended Hubbard model
Strongly Correlated Electrons
2017-03-15 v1 Materials Science
Quantum Gases
Statistical Mechanics
Computational Physics
Abstract
We perform a thorough study of an extended Hubbard model featuring local and nearest-neighbor Coulomb repulsion. Using dynamical mean-field theory we investigated the zero temperature phase-diagram of this model as a function of the chemical doping. The interplay between local and non-local interaction drives a variety of phase-transitions connecting two distinct charge-ordered insulators, i.e., half-filled and quarter-filled, a charge-ordered metal and a Mott insulating phase. We characterize these transitions and the relative stability of the solutions and we show that the two interactions conspire to stabilize the quarter-filled charge ordered phase.
Keywords
Cite
@article{arxiv.1611.03455,
title = {Doping driven metal-insulator transitions and charge orderings in the extended Hubbard model},
author = {K. J. Kapcia and S. Robaszkiewicz and M. Capone and A. Amaricci},
journal= {arXiv preprint arXiv:1611.03455},
year = {2017}
}
Comments
11 pages, 9 figures, ReVTeX; submitted to Physical Review B