Kapitza pendulum effect in a weakly disordered amorphous magnet
介观与纳米尺度物理
2007-05-23 v1 无序系统与神经网络
摘要
Effect of the "random anisotropy" type disorder on orientation of the magnetization in an amorphous magnet is considered. It is shown, that the principal corrections to the free energy of the magnet originate from the fluctuations of the order parameter in the direction of its degeneracy. The types of disorder are found, which lift the continuous degeneracy and suppress the Larkin-Imry-Ma mechanism of disruption of the long-range order in continuously degenerate systems.
关键词
引用
@article{arxiv.cond-mat/0702579,
title = {Kapitza pendulum effect in a weakly disordered amorphous magnet},
author = {I. A. Fomin},
journal= {arXiv preprint arXiv:cond-mat/0702579},
year = {2007}
}
备注
8 pages, Russian version will be submitted to JETP Letters