Charge ordering in quasi-one-dimensional systems with frustrating interactions
Strongly Correlated Electrons
2007-05-23 v1
Abstract
Motivated by the co-existing charge and spin order found in strongly correlated ladder systems, we study an effective pseudospin model on a coupled two-leg ladder. A bosonisation analysis yields a rich phase diagram showing Wigner/Peierls charge order and Neel/dimer spin order. In a broad parameter regime, the orbital antiferromagnetic phase is found to be stable. An intermediate gapless phase of finite width is found to lie in between two charge-ordered gapped phases. Our work is potentially relevant for a unified description of a class of strongly correlated, quarter-filled ladder systems.
Cite
@article{arxiv.cond-mat/0511458,
title = {Charge ordering in quasi-one-dimensional systems with frustrating interactions},
author = {Siddhartha Lal and Mukul S. Laad},
journal= {arXiv preprint arXiv:cond-mat/0511458},
year = {2007}
}
Comments
4 Pages, 3 Figures