Low-lying excitations and magnetization process of coupled tetrahedral systems
Statistical Mechanics
2009-11-07 v1
Abstract
We investigate low-lying singlet and triplet excitations and the magnetization process of quasi-1D spin systems composed of tetrahedral spin clusters. For a class of such models, we found various exact low-lying excitations; some of them are responsible for the first-order transition between two different ground states formed by local singlets. Moreover, we find that there are two different kinds of magnetization plateaus which are separated by a first-order transition.
Keywords
Cite
@article{arxiv.cond-mat/0207176,
title = {Low-lying excitations and magnetization process of coupled tetrahedral systems},
author = {K. Totsuka and H-J. Mikeska},
journal= {arXiv preprint arXiv:cond-mat/0207176},
year = {2009}
}
Comments
To appear in Phys.Rev.B (Issue 01 August 2002). A short comment is added