Thermodynamics of strongly disordered spin ladders
Disordered Systems and Neural Networks
2009-11-07 v2 Strongly Correlated Electrons
Abstract
We study antiferromagnetic two-leg spin-1/2 ladders with strong bond randomness, using the real space renormalization group method. We find the low-temperature spin susceptibility of the system follows non-universal power laws, and the ground state spin-spin correlation is short-ranged. Our results suggest that there is no phase transition when the bond randomness increases from zero; for strong enough randomness the system is in a Griffith region with divergent spin susceptibility and short-range spin-spin correlation.
Cite
@article{arxiv.cond-mat/0202355,
title = {Thermodynamics of strongly disordered spin ladders},
author = {Eddy Yusuf and Kun Yang},
journal= {arXiv preprint arXiv:cond-mat/0202355},
year = {2009}
}
Comments
Published version, 12 pages, 6 figures