THEORY FOR THE NONLINEAR MAGNETO-OPTICAL RESPONSE AT INTERFACES

抄録

  Results of an electronic theory for the nonlinear optical response at metallic interfaces are presented. It is shown that nonlinear Kerr-spectra reveal sensitively the atomic, electronic and magnetic structure. The nonlinear Kerr-rotation is generally much larger than the linear one and depends characteristically on the polarization of the incoming light. Thus, magnetic reorientation transitions can be easily detected as well as domain structures and magnetic structures of multilayer films. The second-harmonic-generation (S.H.G.) is polarization dependent, characteristically different for simple metals and transition-metals, and its temperature dependence can be used to study systems not at equilibrium.