Exchange coupling between iron layers separated by bcc copper

被引：12

作者：

Costa, AT

Castro, JDE

Muniz, RB

Ferreira, MS

Mathon, J

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, DEPT MATH, LONDON SW7 2BZ, ENGLAND

[2] CITY UNIV LONDON, DEPT MATH, LONDON EC1V 0HB, ENGLAND

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.55.3724

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The exchange coupling between Fe layers separated by bce Cu is calculated for Fe/Cu/Fe (001) trilayers. It is shown that the coupling is basically regulated by three extrema of the bulk bcc Cu Fermi surface. The contributions from those extrema are all of the same order of magnitude, but that associated with the ''belly'' at the Gamma point dominates. The calculated temperature dependence of the coupling varies considerably with spacer layer thickness. Individually, the amplitudes of these extrema contributions decrease with temperature, each according to a different rate. Such an effect may cause an actual increase of coupling with temperature for some Cu thicknesses.

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收藏

页码：3724 / 3727

页数：4

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