F. Manders et al., 2ND-HARMONIC GENERATION STUDY OF QUANTUM-WELL STATES AND INTERDIFFUSION IN A CO RH MULTILAYER/, IEEE transactions on magnetics, 34(4), 1998, pp. 855-857
The nonlinear optical response of a Rh overlayer on top of a Co film s
hows an oscillatory behaviour as a function of Rh thickness. The oscil
lation period is the same as for the the periode of the oscillatory ex
change coupling of two Co layers separated by a Rh wedge. Spectroscopi
c studies show that the,period and the phase are independent of the wa
velength. The observed strong temperature dependence of the nonlinear
response can be related to the interdiffusion of Rh in Co.