Magnetic circular dichroism in valence-band photoemission from perpendicularly magnetized Ni thin films on Cu(001) has been studied both experimentally and theoretically. Over the photon energy range of 11--27 eV for normal emission and normal incidence, intensity asymmetries up to 20% upon light helicity or magnetization direction reversal were found. Fully relativistically calculated photoemission spectra agree well with experiment and reveal the interplay between spin-orbit coupling and exchange splitting, which is at the origin of magnetic dichroism. From comparison of theory and experiment the band dispersion is determined and points of hybridization along the {Δ} axis are identified. {} 1996 The American Physical Society.
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Kuch et al. (1996) studied this question.
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