Critical behavior of Griffiths ferromagnets

被引：59

作者：

Chan, Pak Yuen ^{[1
]}

Goldenfeld, Nigel ^{[1
]}

Salamon, Myron ^{[1
]}

机构：

[1] Univ Illinois, Dept Phys, Loomis Lab Phys, Urbana, IL 61801 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.97.137201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

From a heuristic calculation of the leading order essential singularity in the distribution of Yang-Lee zeroes, we obtain new scaling relations near the ferromagnetic-Griffiths transition, including the prediction of a discontinuity on the analogue of the critical isotherm. We show that experimental data for the magnetization and heat capacity of La0.7Ca0.3MnO3 are consistent with these predictions, thus supporting its identification as a Griffiths ferromagnet.

引用

页数：4

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