Random Spin-1 Quantum Chains
凝聚态物理
2009-10-28 v1
摘要
We study disordered spin-1 quantum chains with random exchange and biquadratic interactions using a real space renormalization group approach. We find that the dimerized phase of the pure biquadratic model is unstable and gives rise to a random singlet phase in the presence of weak disorder. In the Haldane region of the phase diagram we obtain a quite different behavior.
引用
@article{arxiv.cond-mat/9602013,
title = {Random Spin-1 Quantum Chains},
author = {Beatriz Boechat and Andreia Saguia and Mucio Continentino},
journal= {arXiv preprint arXiv:cond-mat/9602013},
year = {2009}
}
备注
13 pages, Latex, no figures, to be published in Solid State Communications