Phase Diagram of the S = 1/2 Frustrated Coupled Ladder System
Strongly Correlated Electrons
2009-10-30 v1
Abstract
We present a theoretical study of the magnetic phase diagram of the frustrated coupled ladder structure realized recently in several materials. This system displays a nondegenerate spin-gap state in the dimer limit and an infinitely degenerate spin-gap state in the regime of weakly-coupled zig-zag chains. Between these we demonstrate the existence of gapless, magnetically ordered regions whose order is antiferromagnetic close to the honeycomb lattice limit, and incommensurate along the chains when all three magnetic interactions compete.
Keywords
Cite
@article{arxiv.cond-mat/9703214,
title = {Phase Diagram of the S = 1/2 Frustrated Coupled Ladder System},
author = {B. Normand and K. Penc and M. Albrecht and F. Mila},
journal= {arXiv preprint arXiv:cond-mat/9703214},
year = {2009}
}
Comments
5 pages, RevTeX; 5 .eps figures