Quasi-elastic scattering of electrons in image-potential states |
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| Institution: | 1. Lehrstuhl für Festkörperphysik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Staudtstr. 7, D-91058 Erlangen, Germany;2. Max-Born-Institut, Max-Born-Str. 2A, D-12489 Berlin, Germany;3. Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Renthof 5, D-35032 Marburg, Germany |
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| Abstract: | Image-potential states provide a model system to study electron scattering at surfaces. With time-, energy- and angle-resolved two-photon photoemission quasi-elastic intraband and resonant interband scattering processes can be identified and resolved. The scattering sources are related to phonons and to imperfections of the surface such as defects and steps. |
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