Correlations in mesoscopic magnetic systems
Statistical Mechanics
2007-05-23 v1
Abstract
The purpose of this proposal is to study the ferro/para phase transition in a mesoscopic Ising-like lattice and in particular demonstrate the existence of a negative magnetic susceptibility in the fixed magnetization ensemble. To this aim we will use the correlation < S(r) S(r+Dr) > = < M2>/N2 where N is the total number of spins for a single cluster, M the total magnetization of the cluster, and the equality holds if we choose r0<Dr<R where r0 is the linear size of a spin site and R is the linear size of a cluster.
Cite
@article{arxiv.cond-mat/0410427,
title = {Correlations in mesoscopic magnetic systems},
author = {F. Gulminelli and Ph. Chomaz},
journal= {arXiv preprint arXiv:cond-mat/0410427},
year = {2007}
}