Dynamical aspects of a three-dimensional Heisenberg spin glass
Abstract
Spin-glass and chiral-glass orderings of a three-dimensional isotropic Heisenberg spin glass are studied both by equilibrium and off-equilibrium Monte Carlo simulations with emphasis on their dynamical aspects. The model is found to exhibit a finite-temperature chiral-glass transition without the conventional spin-glass order. Although chirality is an Ising-like quantity from symmetry, universality class of the chiral-glass transition appears to be different from that of the standard Ising spin glass. In the off-equilibrium simulation, while the spin autocorrelation exhibits only an interrupted aging, the chirality autocorrelation persists to exhibit a pronounced aging effect reminiscent of the one observered in the mean-field model.
Keywords
Cite
@article{arxiv.cond-mat/0001126,
title = {Dynamical aspects of a three-dimensional Heisenberg spin glass},
author = {H. Kawamura and K. Hukushima},
journal= {arXiv preprint arXiv:cond-mat/0001126},
year = {2007}
}
Comments
9 pages, 8 figures, proceedings of the US-Japan bilateral seminar on `Understanding and Conquering L ong Time Scales in Computer Simulations', July 1999, to appear in Int. J. Mod. Phys. C