Regensburg 2004 – wissenschaftliches Programm

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O: Oberflächenphysik

O 28: Postersitzung (Elektronische Struktur, Grenzfläche fest-flüssig, Halbleiteroberflächen und -grenzflächen, Magnetismus und Symposium SYXM, Methodisches, Nanostrukturen, Oberflächenreaktionen, Teilchen und Cluster, Zeitaufgelöste Spektroskopie)

O 28.76: Poster

Mittwoch, 10. März 2004, 16:00–19:00, Bereich C

Time-Resolved Photoemission Electron Microscopy at nanostructured surfaces — •Carsten Wiemann, Michael Bauer, Michael Munzinger, Daniela Bayer, and Martin Aeschlimann — TU Kaiserslautern

TR-2PPE (Time-Resolved 2-Photon-Photoemission) is a well-established technique to investigate electron dynamics at surfaces on a femtosecond time-scale. A combination of TR-2PPE with a spatially resolving electron detection scheme such as Photoemission Electron Microscopy (PEEM) allows in addition to analyze the precise local origin of the emitted electrons. In this way a ’lifetime mapping’ of heterogeneous samples is - in principle - possible. [O. Schmidt et al. Appl. Phys. B 74 (2002) 223-227] Recent time-resolved PEEM results on nanostructured surfaces demonstrating the capabilities and limits of this setup in extending time-resolved spectroscopy to the nanoscale will be presented.