Dynamics of coupled quantum spin chains
Condensed Matter
2009-10-28 v2
Abstract
Static and dynamical properties of weakly coupled antiferromagnetic spin chains are treated using a mean--field approximation for the interchain coupling and exact results for the resulting effective one--dimensional problem. Results for staggered magnetization, N\'eel temperature and spin wave excitations are in agreement with experiments on . The existence of a narrow longitudinal mode is predicted. The results are in agreement with general scaling arguments, contrary to spin wave theory.
Cite
@article{arxiv.cond-mat/9604144,
title = {Dynamics of coupled quantum spin chains},
author = {H. J. Schulz},
journal= {arXiv preprint arXiv:cond-mat/9604144},
year = {2009}
}
Comments
12 pages, 1 figure, RevTeX 3.0, uuencoded file, some refs added