Spin Dependence of Correlations in Two-Dimensional Quantum Heisenberg Antiferromagnets
Condensed Matter
2009-10-28 v1
Abstract
We present a series expansion study of spin-S square-lattice Heisenberg antiferromagnets. The numerical data are in excellent agreement with recent neutron scattering measurements. Our key result is that the correlation length for S>1/2 strongly deviates from the exact T->0 (renormalized classical, or RC) scaling prediction for all experimentally and numerically accessible temperatures. We note basic trends with S of the experimental and series expansion correlation length data and propose a scaling crossover scenario to explain them.
Keywords
Cite
@article{arxiv.cond-mat/9503143,
title = {Spin Dependence of Correlations in Two-Dimensional Quantum Heisenberg Antiferromagnets},
author = {N. Elstner and A. Sokol and R. R. P. Singh and M. Greven and R. J. Birgeneau},
journal= {arXiv preprint arXiv:cond-mat/9503143},
year = {2009}
}
Comments
5 pages, REVTeX file. PostScript file for the paper with embedded figures available via WWW at http://xxx.lanl.gov/ps/cond-mat/9503143 .