Susceptibilities and Spin Gaps of Weakly-coupled Spin Ladders
Strongly Correlated Electrons
2009-11-10 v2
Abstract
We calculate the uniform and staggered susceptibilities of two-chain spin-1/2 Heisenberg ladders using Monte-Carlo simulations. We show that the gap extracted from the uniform susceptibility and the saturation value of the staggered susceptibility are independent of the sign of the inter-chain coupling J_perp in the asymptotic limit |J_perp|/J -> 0. Furthermore, we examine the existence of logarithmic corrections to the linear scaling of the gap with |J_perp|.
Cite
@article{arxiv.cond-mat/0310714,
title = {Susceptibilities and Spin Gaps of Weakly-coupled Spin Ladders},
author = {S. Larochelle and M. Greven},
journal= {arXiv preprint arXiv:cond-mat/0310714},
year = {2009}
}
Comments
3 pages, 3 figures; reference added, minor changes