Frozen Quasi Long Range Order in Random Anisotropy Heisenberg Magnet
Disordered Systems and Neural Networks
2009-11-10 v4
Abstract
Extensive Monte Carlo simulations are used to investigate the low-temperature properties of the random anisotropy Heisenberg model, which describes the magnetic behavior of amorphous rare-earth-transition metal alloy. We show that the low-temperature phase in weak-anisotropy region is characterized by a {\it frozen-in} power-law spin-spin correlation. Numerical observation of the power-law exponent indicates nonuniversal behavior.
Keywords
Cite
@article{arxiv.cond-mat/0303552,
title = {Frozen Quasi Long Range Order in Random Anisotropy Heisenberg Magnet},
author = {M. Itakura},
journal= {arXiv preprint arXiv:cond-mat/0303552},
year = {2009}
}
Comments
v1: Submitted to PRB. Revtex4, 5 pages, 9 figures. v2: title changed. fixed wrong sign in the definition of \eta v3: Conclusion on the universality is changed because one of the previous simulation result contained an error and it has been re-calculated v4: Final version