Auger electron diffraction in thin CoO films on Au(111)
| Autor: | Angelika Chassé, K.-M. Schindler, Henning Neddermeyer, L. Niebergall, M. Heiler |
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| Rok vydání: | 2008 |
| Předmět: |
Diffraction
Auger electron spectroscopy Auger effect Chemistry Surfaces and Interfaces Condensed Matter Physics Molecular physics Surfaces Coatings and Films Auger Condensed Matter::Materials Science symbols.namesake Transition metal Electron diffraction Materials Chemistry symbols Thin film Atomic physics Single crystal |
| Zdroj: | Surface Science. 602:443-451 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2007.10.048 |
| Popis: | The local structure of thin CoO films grown on a single crystal Au(1 1 1) surface has been studied by Auger electron diffraction (AED). Therefore, the angular dependence of the Auger electron intensity of Co-LMM and O-KLL Auger electrons was recorded in the total half-space above the film. Such 2π-scans immediately reflect the symmetry of the surface and the local structure of the film. The experimental data are compared to multiple-scattering cluster calculations, where both the influence of multiple-scattering effects and effects of Auger transition matrix elements have been investigated. We have found that the AED patterns of a CoO film in forward-scattering conditions do not always provide straightforward information on the local structure of the film, whereas the multiple-scattering approximation applied gives very good agreement between experimental and theoretical results. |
| Databáze: | OpenAIRE |
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