Modified self-consistent harmonic approximation and its application to two-dimensional easy-axis quantum ferromagnets
强关联电子
2007-05-23 v2
摘要
In the paper we describe the modification of self-consistent harmonic approximation for quantum S=1 systems. This method has a number of advantages in comparison with usual SCHA. We apply the method to two-dimensional ferromagnets with easy-axis exchange or single-site anisotropy. The results are in good agreement with Monte-Carlo simulations and pure-quantum SCHA.
引用
@article{arxiv.cond-mat/0303619,
title = {Modified self-consistent harmonic approximation and its application to two-dimensional easy-axis quantum ferromagnets},
author = {D. V. Spirin},
journal= {arXiv preprint arXiv:cond-mat/0303619},
year = {2007}
}
备注
15 pages, 2 figures Some mistakes have been corrected