Oscillations of Interlayer Exchange Coupling vs. Ferromagnetic-Layers Thickness

摘要: The dependence on the ferromagnetic-layers thickness of interlayer exchange coupling between ferromagnetic layers separated by a paramagnetic spacer is discussed. It shown that an oscillatory behaviour should show up, due to Fabry-Perot-like interferences electron Bloch waves in layers. This appears clearly from analytical expression coupling, as well numerical calculations for simple, physically transparent, free-electron model. Finally, case Co/Cu/Co(001)