ENHANCED TEMPERATURE-DEPENDENT MAGNETORESISTIVITY OF FE/CR SUPERLATTICES

被引：53

作者：

ZHANG, SF ^{[1
]}

LEVY, PM ^{[1
]}

机构：

[1] NYU,DEPT PHYS,NEW YORK,NY 10003

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.43.11048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The temperature dependence of the magnetoresistivity is found to be much larger in Fe/Cr superlattices with rough interfaces (high magnetoresistance) than those with sharp ones (small magnetoresistance). We discuss the mechanisms which produce this temperature dependence and point out that symmetry conditions restrict the putative mechanisms in superlattices. We show that the enhanced temperature dependence of the magnetoresistance can be explained by the existence of local spin excitations at the roughened Fe/Cr interfaces.

引用

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页码：11048 / 11056

页数：9

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