Confinement mechanism for strong temperature dependence of the interlayer exchange coupling in Co/Cu(001)

被引：17

作者：

Castro, JDE

Mathon, J

Villeret, M

Umerski, A

机构：

[1] Department of Mathematics, City University

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 20期

关键词：

D O I：

10.1103/PhysRevB.53.R13306

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown, within the quantum-well theory of the exchange coupling J in magnetic multilayers, that the temperature dependence of J is governed not only by the spacer Fermi surface but also by the confining strength of the ferromagnetic layers. The confinement mechanism is first explored for an exactly solvable parabolic-band model and cases in which it leads to a very strong temperature dependence of J are identified. Finally, it is demonstrated, using fully realistic tight-binding bands, that the confinement mechanism dominates J(T) in Co/Cu/Co(001).

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页码：13306 / 13309

页数：4

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