Ferromagnetic resonance study of exchange coupled (Ga,Mn)As/GaAs/(Ga,Mn)As heterostructures
Résumé
Ferromagnetic resonance study of the exchange coupled (Ga,Mn)As/ GaAs/(Ga,Mn)As heterostructures is reported. The measurements were performed on the series of samples with varying thicknesses d(GaAs) of nonmagnetic GaAs spacer, established d(GaAs)-dependent extent of weak and strong interlayer exchange coupling, judging on the observation of one or two ferromagnetic resonance modes.