Stripe orders in the extended Hubbard model
Strongly Correlated Electrons
2009-10-31 v1 Superconductivity
Abstract
We study stripe orders of charge and spin density waves in the extended Hubbard model with the nearest-neighbor Coulomb repulsion V within the mean field approximation. We obtain V vs. T(temperature) phase diagram for the on-site Coulomb interaction U/t=8.0 and the filling n=0.8, here t is a nearest-neighbor transfer energy. Our result shows that the diagonal stripe spin density wave state (SDW) is stable for small V, but for large V the most stable state changes to a charge density wave-antiferromagnetic (CDW-AF) state. Especially we find at low temperature and for a certain range of value of V, a vertical stripe CDW-AF state becomes stable.
Cite
@article{arxiv.cond-mat/0003347,
title = {Stripe orders in the extended Hubbard model},
author = {Taira Kato and Masaru Kato},
journal= {arXiv preprint arXiv:cond-mat/0003347},
year = {2009}
}
Comments
LaTeX 9 pages, 17 figures, uses jpsj.sty