The line shape of the Auger decay of adatoms is studied by a joint theoretical and experimental effort, the former within a DFT framework, and the latter with synchrotron radiation measurements. We investigate the KLV Auger deexcitation of Na on Al(111), a system with different adsorption 2;3p???p???? geometries. In particular, we study the ? 3 ? 3?R30 phase at 1=3 ML (monolayer) and the more complex ?2 ? 2? structure at 1=2 ML coverage. From the comparison between theory and experiment, we unambiguously determine features that allow for the determination of the adsorption environment from the adatom Auger spectrum.
Selectivity of Auger decays to the local surface environment
Trioni MI;Floreano L;Morgante A
2004
Abstract
The line shape of the Auger decay of adatoms is studied by a joint theoretical and experimental effort, the former within a DFT framework, and the latter with synchrotron radiation measurements. We investigate the KLV Auger deexcitation of Na on Al(111), a system with different adsorption 2;3p???p???? geometries. In particular, we study the ? 3 ? 3?R30 phase at 1=3 ML (monolayer) and the more complex ?2 ? 2? structure at 1=2 ML coverage. From the comparison between theory and experiment, we unambiguously determine features that allow for the determination of the adsorption environment from the adatom Auger spectrum.File in questo prodotto:
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Descrizione: Selectivity of Auger Decays to the Local Surface Environment
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