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Wu, Y. Z., Vollmer, R., Regensburger, J., Jin, X. F., Kirschner, J.

Magnetization-induced second harmonic generation from the Ni/Cu interface in multilayers on Cu(001)
Physical Review B 63, (2),pp 054401 (1-9) Springer-Verlag, (2001)
Ultrathin Ni films in Cu/Ni/Cu(001) bilayers and exchange coupled Ni films in Ni/Cu/Ni/Cu(001) trilayers are investigated by magnetization induced second harmonic generation (MSHG). The results are analyzed in a model of localized nonlinear polarizabilities at the interfaces. We show that antiferromagnetic coupling in the Ni/Cu/Ni trilayes is observable with MSHG due to the presence of quantum well states (QWS's) in the Cu layer. The influence of the QWS's on the SHG from a Ni film in a Cu/Ni/Cu(001) bilayer is weaker compared to the case of Fe or Co bilayers.

ki-2001-m05