THEORY OF INTRINSIC AND THERMALLY-INDUCED INTERLAYER MAGNETIC COUPLING BETWEEN FERROMAGNETIC-FILMS SEPARATED BY AN INSULATING LAYER

被引：104
作者：
BRUNO, P
机构：
[1] Institut d'Electronique Fondamentale, Bâtiment 220, Université Paris-Sud
来源：
PHYSICAL REVIEW B | 1994年 / 49卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.49.13231
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A formalism developed previously to study the interlayer exchange coupling between ferromagnetic layers separated by a nonmagnetic metal spacer is applied to the case of an insulating spacer. It allows a unified treatment of both cases (metal and nonmetal spacer), provided one introduces the concept of a complex Fermi surface. In contrast to the metal-spacer case, where the exchange coupling decreases with increasing temperature, the coupling across an insulating spacer is found to increase with temperature. This finding is in agreement with recent experimental observations.
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页码：13231 / 13234
页数：4
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