Bandlike character of 4felectrons inCeRh3

Abstract

The electronic structure of ${\mathrm{CeRh}}_3$ was studied by photoemission and bremsstrahlung isochromate spectroscopy (BIS). An analysis of the spectra, taken at different temperatures, on the basis of the Anderson single-impurity model leads to considerable inconsistencies that mark the limits of applicability of the model. On the other hand, the BIS spectrum of ${\mathrm{CeRh}}_3$ can be well described by the results of a local-density-approximation band-structure calculation. These findings confirm a bandlike character of the 4f states in strongly hybridized Ce systems.