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O: Oberflächenphysik
O 10: Elektronische Struktur II
O 10.2: Talk
Monday, March 24, 2003, 15:15–15:30, FOE/ORG
Observation of 5f-states on U/W(110) films by means of STS — •Luis Berbil-Bautista1, Torben Hänke1, Mathias Getzlaff1,2, Ingo Opahle3, Manuel Richter3, and Roland Wiesendanger1 — 1Institute of Applied Physics, University of Hambug, Jungiusstr. 11, D-20355 Hamburg — 2now at:Institute of Applied Physics, University of Düsseldorf, Universitästr., D-40225 Düsseldorf — 3Institut f. Festkörper-, u. Werkstofforsch., Postfach 270116, D-01171 Dresden
We have performed STS investigations at room temperature on clean metallic Uranium epitaxially grown on the (110) surface of a single tungsten crystal. This system is known to present an hcp phase where the band structure is dominated by 5f states [1]. The STS spectra on high islands and thick films are in good agreement with the results of calculations based on the four components relativistic local density approximation. The calculated DOS and decay of the states into the vacuum indicate that the features in the STS are related with 5f-states in the Uranium film. [1] S.L. Molodtsov et al. PRB 57, 13241 (1998)