Magnetization of coupled spin clusters in Ladder Geometry
Strongly Correlated Electrons
2009-11-07 v2
Abstract
In this paper, we construct a class of spin-1/2 antiferromagnetic (AFM) two-chain ladder models consisting of blocks of n-spin tetrahedral clusters alternating with two-spin rungs. For n=4 and 6 and in extended parameter regimes, the exact ground state of the ladder is shown to be a product of the ground states of the rungs and the n-spin blocks, in both zero and finite magnetic fields. In the latter case, magnetization/site (m) versus magenetic field (h) plot exhibits well-defined magnetization plateaus.
Cite
@article{arxiv.cond-mat/0107393,
title = {Magnetization of coupled spin clusters in Ladder Geometry},
author = {Emily Chattopadhyay and Indrani Bose},
journal= {arXiv preprint arXiv:cond-mat/0107393},
year = {2009}
}
Comments
9 pages, latex, 6 figures, To be published in Phys. Rev. B