Abstract

A short review is given of theoretical studies on resonant X-ray emission spectroscopy (RXES) in f and d electron systems. Impurity Anderson model (or small cluster model), where only a single metal ion with f or d electrons is taken into account, has often been used in the analysis of RXES of f and d electron systems. We first show that the impurity Anderson model can be applied successfully to the analysis of RXES in some rare earth compounds and transition metal compounds. Then we study effects of translational symmetry, beyond the impurity Anderson model, in RXES of early transition metal compounds, TiO 2 for instance, with a simplified one-dimensional d–p model.

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