Evidence for Temperature Chaos in Spin Glasses
Disordered Systems and Neural Networks
2024-02-20 v2 Statistical Mechanics
Abstract
We study the field cooled magnetization of a CuMn spin glass under temperature perturbations. The -cycling curves are compared with the reference curve without temperature cycling. There is a crossover from the cumulative aging region to noncumulative aging region as the temperature change is increased. The cumulative aging range scales with the chaos length , becoming comparable to the correlation length, , at the crossover boundary. The extracted chaos exponent, , is in agreement with theoretical predictions. Our results strongly suggest temperature chaos exists in real spin glasses system.
Cite
@article{arxiv.2010.01214,
title = {Evidence for Temperature Chaos in Spin Glasses},
author = {Qiang Zhai and Raymond L. Orbach and Deborah Schlagel},
journal= {arXiv preprint arXiv:2010.01214},
year = {2024}
}