Weakly Coupled Antiferromagnetic Quantum Spin Chains
强关联电子
2009-10-28 v2
摘要
Quasi-one-dimensional quantum antiferromagnets formed by a d-dimensional hypercubic lattice of weakly coupled spin-1/2 antiferromagnetic Heisenberg chains are studied by combining exact results in one-dimension and renormalization group analyses of the interchain correlations. It is shown that d-dimensional magnetic long-range order develops at zero-temperature for infinitesimal antiferromagnetic or ferromagnetic interchain couplings. In the presence of weak bond alternations, the order-disorder transition occurs at a finite interchain coupling. Relevances to the lightly doped quantum antiferromagnets and multi-layer quantum Hall systems are discussed.
引用
@article{arxiv.cond-mat/9611129,
title = {Weakly Coupled Antiferromagnetic Quantum Spin Chains},
author = {Ziqiang Wang},
journal= {arXiv preprint arXiv:cond-mat/9611129},
year = {2009}
}
备注
12 revtex pages, no figures, revised final version to appear in PRL