Mixed Heisenberg Chains. I. The Ground State Problem
强关联电子
2009-10-30 v2 统计力学
摘要
We consider a mechanism for competing interactions in alternating Heisenberg spin chains due to the formation of local spin-singlet pairs. The competition of spin-1 and spin-0 states reveals hidden Ising symmetry of such alternating chains.
引用
@article{arxiv.cond-mat/9703206,
title = {Mixed Heisenberg Chains. I. The Ground State Problem},
author = {H. Niggemann and G. Uimin and J. Zittartz},
journal= {arXiv preprint arXiv:cond-mat/9703206},
year = {2009}
}
备注
7 pages, RevTeX, 4 embedded eps figures, final version