Berlin 2008 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 23: Poster session
MM 23.8: Poster
Dienstag, 26. Februar 2008, 14:45–18:00, Poster B
High Kinetic Energy Photoelectron Spectroscopy Study of the Ni 1s Core Level and Satellite Structure — •Mihaela Gorgoi1, Svante Svensson2, Olof Karis2, Jan Rusz2, Peter Oppeneer2, Franz Schäfers1, Walter Braun1, Nils Martensson2, and Wolfgang Eberhardt1 — 1BESSY GmbH, Berlin, Germany — 2Uppsala University, Uppsala, Sweden
The Ni 2p level and its satellite structure have been studied since many years and the mechanisms behind this structure have been addressed in a large number of reports [1, 2 and references within]. In contrast, there is not a modern photoelectron spectrum of Ni 1s and the corresponding satellite structure. Using the HIKE facility at beam-line KMC1 at BESSY we have studied this core level using excitation energies from 9 keV to 12 keV. Our findings show that the satellite *main line energy distance decreases for the Ni 1s level in comparison to the Ni 2p case. Our finding has important implications for the existing theoretical explanations of the classical Ni satellite problem and requires a revision of current models.
[1] A.P. Grosvenor, M.C. Biesinger, R.St.C. Smart, N.S. McIntyre, Surface Science 600 (2006) 1771.
[2] A. Bosch, H. Feil, G.A. Sawatzky, N. Mårtensson, Solid State Communications 41 (1982) 355.