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Berlin 2005 – scientific programme

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O: Oberflächenphysik

O 23: Hauptvortrag Echenique

O 23.1: Invited Talk

Saturday, March 5, 2005, 14:00–14:45, TU EB301

Electron dynamics at surfaces — •Pedro M. Echenique — Departamento de Física de Materiales UPV/EHU, and "Unidad Física de Materiales" (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia Interacional Physics Center, Po Manuel de Lardizabal 3, 20018 San Sebastián, Spain

An overview of recent theoretial and experimental investigations of electron dynamics in surface and image-potential states at metal surfaces as well as some results for bulk materials are presented. The relevance of a quasiparticle concept in this relation is disscussed. Some detailes of our theoretical threatment of a many-body theory beyond a free-electron description is reported. Thus, the different chanells for quasipartice decay such as the electronic intra- and inter-band transitions and the electron-phonon scattering are addressed.

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