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Dresden 2020 – scientific programme

The DPG Spring Meeting in Dresden had to be cancelled! Read more ...

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O: Fachverband Oberflächenphysik

O 4: Overview Talk: Martin Aeschlimann

O 4.1: Topical Talk

Monday, March 16, 2020, 09:30–10:15, TRE Phy

Chasing excited electrons in energy, momentum space, and time — •Martin Aeschlimann — Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, Kaiserslautern, Germany

Optically excited (hot) electrons play a crucial role for many fundamental chemical and physical phenomena occurring at surfaces, interfaces, and in bulk materials. For the investigation of such processes, time-resolved photoelectron spectroscopy turned out to be a very powerful tool through its direct access to single electron as well as transient band-structure dynamics. Recent technological breakthroughs in the development of ultrashort pulsed light sources and electron spectrometers have paved the way for a completely new generation of real-time photoemission experiments. In this presentation, I will demonstrate the potential of time-resolved momentum microscopy to study the electronic fingerprints of the elastic and inelastic scattering processes occurring at surfaces and (metal-organic) hybrid interfaces. The results reveal the unique opportunity of momentum microscopy to directly trace relaxation pathways of excited electrons in momentum space.

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