Optical second harmonic generation (SHG) in 75^∘{} reflection was studied on longitudinally magnetized PtMnSb(111) and magnetic circular dichroism was observed with SHG. For circularly polarized incident light of 532 nm it amounts to (7±{}1)%. For linearly polarized incident radiation this leads to a nonlinear magneto-optical Kerr rotation of (14±{}2)^∘{}. The strong symmetry-breaking effect of the magnetization is demonstrated by a 90^∘{} turn of the SH polarization ellipse with regard to the linear polarization of the fundamental light.
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Reif et al. (1993) studied this question.
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