A Rotating-Valence-Bond scenario for the 2D Antiferromagnetic Heisenberg Model
Condensed Matter
2007-05-23 v1
Abstract
We propose that the valence bonds forming the ground state of the 2D-AF Heisenberg model on a square lattice may rotate under the effect of the antiferromagnetic background. To test this idea we apply a real space renormalization group approach to construct a rotating-valence-bond ground state anstaz. Our results are analytic and valid for any value of the spin S of the AF-magnet, which allow us to perfom semiclassical expansions of the energy and the staggered magnetization.
Keywords
Cite
@article{arxiv.cond-mat/9601121,
title = {A Rotating-Valence-Bond scenario for the 2D Antiferromagnetic Heisenberg Model},
author = {German Sierra and Miguel A. Martin-Delgado},
journal= {arXiv preprint arXiv:cond-mat/9601121},
year = {2007}
}
Comments
RevTex file, 3 pages, 3 PS figures available upon request