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Frankfurt 2006 – wissenschaftliches Programm

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MO: Molekülphysik

MO 13: Molecular Clusters I

MO 13.5: Vortrag

Montag, 13. März 2006, 15:00–15:15, H10

Pump-Probe-Photoelectron-Spectroscopy of C60 — •Christine Wehrstein, Raphael Kuhnen, Abdollah Malakzadeh, Pascal Didier, and Bernd v. Issendorff — Physikalisches Institut, Universität Freiburg, Stefan-Meier-Str. 21, 79104 Freiburg

The electronic valence structure of fullerenes is determined by the delocalized π-band which can be seen as a spherical two-dimensional electron gas. This makes fullerenes interesting model systems for the study of relaxation processes in a highly correlated many-electron systems.

C60 clusters have been studied by femtosecond laser photoelectron spectroscopy, measuring intensity dependencies for single pulse excitation with 266nm, 400nm and 800nm light as well as two colour pump-probe-spectra. In the single pulse spectra structures are observed which can be identified as resonant multiphoton detachment of C60. The corresponding intermediate excited states exhibit strongly different decay times.

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