Abstract
The X-ray photoemission (XPS) spectra of the valence band and 2p core lines of metallic chromium are presented. A considerable deviation is observed in the shape of the valence band between the experimental spectrum and the theoretical one-electron spectrum. This discrepancy is mainly due to the d band being too broad in the one-electron band structure calculation. Correlation effects are expected to narrow the theoretical 3d band of Cr considerably.