Studies of uranium compounds by photoemission and bremsstrahlung isochromat spectroscopy

Abstract

The valence state spectra of UPS, XPS and BIS of uranium compounds are discussed using the spectra of UGe 2 and UC as examples of the optically traced 5f partial densities of states and related information about the electronic structures. The 5f spectra in different compounds are similar in that they have sharp Fermi edges and intensities that decrease monotonically toward high binding energy. The BIS spectra have profile intensities that decrease toward high energy. A discussion is made on the localized-electron model versus the itinerant-electron model in the representative case of UC. The spectral profile on the 5d−5f resonance excitation is also discussed.