Weak disorder in a two-dimensional dipole magnet

被引：4
作者：
Feldman, DE
机构：
[1] Landau Institute of Theoretical Physics, Russian Academy of Sciences
来源：
JETP LETTERS | 1997年 / 65卷 / 01期
关键词：
D O I：
10.1134/1.567335
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of ''random-field'' disorder and ''random-anisotropy-axis'' disorder on a two-dimensional dipole ferromagnet is investigated. It is shown that disorder results in instability of the ferromagnetic phase. The correlation function of the magnetization is calculated with the aid of a self-consistent harmonic approximation. It is found that in the presence of a random field the correlation function is a power-law function of the distance. In the presence of random anisotropy the correlation function decreases logarithmically slowly as a function of distance. (C) 1997 American Institute of Physics.
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页码：114 / 119
页数：6
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