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Magnetic linear dichroism (MLD) in angle-resolved valence-band photoemission of Fe(110) has been investigated by means of symmetry considerations, analytical theory, numerical calculations, and photoemission measurements. The dichroic photoemission spectra and their dependence on photon energy clearly show that the microscopic origin of MLD is an interference effect induced by hybridization of initial states of different spatial symmetry at band gaps arising from spin-orbit coupling. The dependence of MLD on the light incidence angle evidences that it is substantially influenced by the optical response of the metal, the approximation of which according to classical Fresnel theory is adequate to reproduce our experimental data.
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Rampe et al. (1998) studied this question.
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