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Lecture Simone Moellenbeck


11 juni 2010 FWN-Building 5118.-156, Nijenborgh 4, 9747 AG, Groningen
Speaker: Dipl.-Phys. Simone Möllenbeck
Affiliation: Universität Duisburg-Essen, Fachbereich Physik, Campus Duisburg, Lotharstrasse 1, 47048 Duisburg, Deutschland
Title: Time resolved electron diffraction studies: Dynamics at surfaces after electronic excitation
Date: Fri Jun 11, 2010
Start: 11.00
Location: FWN-Building 5118.-156
Host: Petra Rudolf
Telephone: +31 50 363 4736


Ultra fast time resolved electron diffraction is an excellent technique to study dynamic processes on the femto- and picosecond timescale after excitation by a fs laser pulse. In our experiment we combine the time resolution of a pump-probe set up with the surface sensitivity of a UHV-RHEED (reflection high energy electron diffraction) [1, 2]. In this talk different examples for the application of TRRHEED in surface physics will be presented, as analysis of the heat transport in hetero films [3, 4], energy dissipation in adsorbate systems after vibrational excitation and the dynamics of surface phase transitions [5].


[1] A. Janzen et al., Rev. of Sci. Instr. 78, 013906 (2007).

[2] A. Janzen et al., Surf. Sci. 600, 4094 (2006).

[3] B. Krenzer et al., Phys. Rev. B 80, 024307 (2009).

[4] A. Hanisch et al., Phys. Rev. B 77, 125410 (2008).

[5] S. Möllenbeck et al., MRS Symp. Proc. Fall 2009 (in press).




Laatst gewijzigd:22 oktober 2012 14:31