Re-Entrant Quantum Phase Transitions in Antiferromagnetic Spin-1 Ladders
Strongly Correlated Electrons
2009-11-07 v1 Statistical Mechanics
Abstract
In response to recent chemical attempts to construct higher-spin ladder materials from organic polyradicals, we study the ground-state properties of a wide class of antiferromagnetic spin-1 ladders. Employing various numerical tools, we reveal the rich phase diagram and correct a preceding nonlinear-sigma-model prediction. A variational analysis well interprets the phase competition with particular emphasis on the {\it re-entrant phase boundary} as a function of the rung interaction.
Keywords
Cite
@article{arxiv.cond-mat/0206553,
title = {Re-Entrant Quantum Phase Transitions in Antiferromagnetic Spin-1 Ladders},
author = {Shoji Yamamoto and Toru Sakai and Akihisa Koga},
journal= {arXiv preprint arXiv:cond-mat/0206553},
year = {2009}
}
Comments
4 pages, 5 figures embedded, J. Phys. Soc. Jpn. Vol. 71, No. 5, 1250 (2002)