Interlayer coupling and magnetoresistance in Ir/Co multilayers

被引：28

作者：

Luo, Y ^{[1
]}

Moske, M ^{[1
]}

Samwer, K ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany

来源：

EUROPHYSICS LETTERS | 1998年 / 42卷 / 05期

关键词：

D O I：

10.1209/epl/i1998-00288-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fcc(111) oriented Ir/Co multilayers were prepared to study their magnetic and magnetotransport properties. The superlattice structure was characterized by X-ray diffraction. Results measured for magnetization and magnetoresistance (Delta R/R) exhibit an oscillatory interlayer exchange coupling with a period of about 1 nm (4.5 monolayers). The coupling strength J(AF) and the largest Delta R/R obtained are -2.05 mJ/m(2) and 4% (at 10 K), respectively. The observed oscillatory behavior can be attributed to an interaction of separated Co magnetic layers, which must be some sort of RKKY coupling. Using this concept, we find a match of the measured oscillation period with the relevant wave vector on the Fermi surfaces of Ir.

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页码：565 / 570

页数：6

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