Stripe Charge Ordering in Triangular-Lattice Systems
Strongly Correlated Electrons
2009-11-11 v1
Abstract
We investigate the ground-state properties of a t2g-orbital Hubbard model on a triangular lattice at electron density 5.5 by using numerical techniques. There appear several types of paramagnetic phases, but we observe in common that one or two orbitals among three orbitals become relevant due to the effect of orbital arrangement. It is found that charge stripes stabilized by the nearest-neighbor Coulomb interaction consist of antiferromagnetic/ferro-orbital chains for small Hund's coupling, while there occurs stripe charge ordering with ferromagnetic/antiferro-orbital chains for large Hund's coupling.
Cite
@article{arxiv.cond-mat/0508414,
title = {Stripe Charge Ordering in Triangular-Lattice Systems},
author = {Hiroaki Onishi and Takashi Hotta},
journal= {arXiv preprint arXiv:cond-mat/0508414},
year = {2009}
}
Comments
2 pages, 2 figures, Proceedings of LT24 (August 10-17, 2005, Orlando)