Resonant 5f valence-band satellite at the 5d threshold in uranium metal

Journal Article · Wed Jul 15 04:00:00 EDT 1981 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.24.613· OSTI ID:6129255

Iwan, M; Koch, E E; Himpsel, F

Photoelectron energy distribution curves for polycrystalline ..cap alpha..-uranium show a giant Fano-type resonance for the intensity of the 5f valence-band features at the Fermi energy E/sub F/, when the photon energy is tuned through the 5d core absorption edge at around h..nu..roughly-equal94 to 103 eV. Further, a sharp (full width at half maximum = 2.2 eV) 5f satellite excitation at an initial energy E/sub i/ = -2.3 eV below E/sub F/ has been observed, which has a close analogy to the ''6-eV satellite'' in Ni. This shakeup satellite shows also a strong resonant enhancement (> or = 6 times) at the 5d core-level threshold, but a distinctly different cross-section dependence. The origin of the resonances of the 5f main line and the 2.3-eV satellite is discussed in an atomic framework, taking 5f and 6d screening into account.

• Research Organization: II. Institut fuer Experimentalphysik der Universitaet Hamburg, 2000 Hamburg 50, Federal Republic of Germany
• OSTI ID: 6129255
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 24:2; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDES
D STATES
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY LEVELS
ENERGY SPECTRA
F STATES
FANO FACTOR
METALS
PHOTOELECTRON SPECTROSCOPY
SCREENING
SPECTRA
SPECTROSCOPY
URANIUM