OSCILLATIONS OF INTERLAYER EXCHANGE COUPLING VS FERROMAGNETIC-LAYERS THICKNESS

被引:158
作者
BRUNO, P
机构
[1] Institut d’Electronique Fondamentale, Université Paris-Sud, Orsay Cedex, F-9H05
来源
EUROPHYSICS LETTERS | 1993年 / 23卷 / 08期
关键词
D O I
10.1209/0295-5075/23/8/013
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The dependence on the ferromagnetic-layers thickness of interlayer exchange coupling between ferromagnetic layers separated by a paramagnetic spacer is discussed. It is shown that an oscillatory behaviour should show up, due to Fabry-Perot-like interferences of the electron Bloch waves in the ferromagnetic layers. This behaviour appears clearly from the analytical expression of the exchange coupling, as well as from numerical calculations for a simple, physically transparent, free-electron model. Finally, the case of Co/Cu/Co(001) is discussed.
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页码:615 / 620
页数:6
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