Abstract
A simple scheme that is based on the Green’s function formalism is introduced, that allows to investigate spin-orbit-induced properties in magnetic solids in a very transparent way. This is demonstrated by investigations on the orbital magnetic moments, on the Fano effect in angle-integrated valence band photoemission and on magnetic circular dichroism in X-ray absorption. Numerical results obtained by additional fully relativistic calculations are presented to support the various conclusions drawn from the analytical considerations. This applies in particular to the interpretation of the magnetic circular dichroism in X-ray absorption (MCXD) on the basis of the so-called sum rules, which relate the dichroic spectra to the spin and orbital magnetic moments of the absorbing atom.
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