A MODEL FOR GIANT MAGNETORESISTANCE IN MAGNETIC GRANULAR SOLIDS

被引：18
|
作者：
KIM, JH
XIAO, JQ
CHIEN, CL
TESANOVIC, Z
XING, L
机构：
[1] UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801
[2] MAX PLANCK INST SOLID STATE RES,HIGH PRESSURE MAGNET LAB,F-38042 GRENOBLE,FRANCE
来源：
SOLID STATE COMMUNICATIONS | 1994年 / 89卷 / 02期
关键词：
D O I：
10.1016/0038-1098(94)90397-2
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We propose a model for giant magnetoresistance (GMR) in granular magnetic solids where the moments within a grain form a single ferromagnetic domain. The electrical transport properties of such solids due to (1) the scattering from grains that act as centers for the potential barrier and (2) the magnetic scattering due to the dipole-dipole interaction between a ferromagnetic domain and spin of a conduction electron are calculated. The magneto-conductance computed as a function of the grain size and the global magnetization shows that GMR in magnetically inhomogenous media may arise from the interplay between the potential-barrier and the magnetic scatterings.
引用
收藏
页码：157 / 161
页数：5
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