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Electron Dynamics
Surface Femtochemistry
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Prof. Dr. Martin Wolf
Abt. Physikalische Chemie
Fritz-Haber Institut der MPG
Faradayweg 4-6
14195 Berlin, Germany
phone:+49 30 8413-5111
Fax: +49 30 8413-5106

hitherto (2010):
Department of Physics
Free University Berlin
Arnimallee 14
D - 14195 Berlin

   

The goal of our research is to obtain a microscopic understanding of elementary surface processes on a femtosecond timescale. This includes fundamental aspects of charge and energy transfer, vibrational dynamics, transient reaction intermediates at surfaces, and electronic excitations in low dimensional systems. Our current interests focus on the following areas:

Dynamics of electronic excitations

 

We employ femtosecond time-resolved photoemission and ultrafast optical techniques to elucidate lifetimes of photoexcited hot electrons in solids, surface states and resonances of adsorbed molecules. Furthermore, we are interested in spin dynamics of magnetic films and electronic properties of supported metal clusters. More...

 

 

 

Laser-induced surface femtochemistry

Ultrashort laser pulses allow the initiation of novel photoinduced surface reactions at metals under non-equilibrium conditions, opening the field of surface femtochemistry. We use a two-pulse excitation scheme to obtain detailed insights into the mechanism and rate of energy flow between the adsorbate and the underlying substrate. More...

Time-resolved THz and vibrational spectroscopy   ThzGraphit

Pump-probe techniques in the far and mid infrared are applied to monitor the dynamics of excitations such as charge carrier relaxation and molecular vibrations at surfaces. THz spectroscopy enables us to trace energy and current relaxation dynamics in solids, liquids and gaseous media. Vibrational spectroscopy using sum-frequency generation is used to trace the chemical transformation of adsorbates initiated by the pump pulse. More (THz Spec.)... or more (Vibrational Spec.)...

 

 

UPLINKS

 

Physics at the Freie Universität

Physical Chemistry at the Fritz-Haber-Institut

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