Hysteresis and hierarchies: dynamics of disorder-driven first-order phase transformations
凝聚态物理
2009-01-23 v1
摘要
We use the zero-temperature random-field Ising model to study hysteretic behavior at first-order phase transitions. Sweeping the external field through zero, the model exhibits hysteresis, the return-point memory effect, and avalanche fluctuations. There is a critical value of disorder at which a jump in the magnetization (corresponding to an infinite avalanche) first occurs. We study the universal behavior at this critical point using mean-field theory, and also present preliminary results of numerical simulations in three dimensions.
引用
@article{arxiv.cond-mat/9210018,
title = {Hysteresis and hierarchies: dynamics of disorder-driven first-order phase transformations},
author = {James P. Sethna and Karin Dahmen and Sivan Kartha and James A. Krumhansl and Bruce W. Roberts and Joel D. Shore},
journal= {arXiv preprint arXiv:cond-mat/9210018},
year = {2009}
}
备注
12 pages plus 2 appended figures, plain TeX, CU-MSC-7479