Percolation mechanism for colossal magnetoresistance

被引：22

作者：

Bastiaansen, PJM ^{[1
]}

Knops, HJF ^{[1
]}

机构：

[1] Univ Nijmegen, Inst Theoret Phys, NL-6525 ED Nijmegen, Netherlands

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1998年 / 59卷 / 03期

关键词：

magnetic materials; electrical conductivity; critical phenomena;

D O I：

10.1016/S0022-3697(97)00220-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We argue that colossal magnetoresistance is a critical phenomenon and propose a mechanism to describe it. The mechanism assumes halfmetallic behavior of the materials showing colossal magnetoresistance, and is based on a correlated percolation. The model shows that colossal magnetoresistance can be explained with a single, unified mechanism that qualitatively captures all experimental features of the phenomenon, above as well as below the Curie temperature. We present Monte Carlo calculations to corroborate our explanation. (C) 1997 Elsevier Science Ltd.

引用

页码：297 / 303

页数：7

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