Dresden 2017 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 36: ELI-ALPS: A New European Light Source for Ultrafast Surface Science

O 36.2: Hauptvortrag

Dienstag, 21. März 2017, 14:30–15:00, TRE Phy

Probing ultrafast electron and spin dynamics in momentum, space, and time - chances and opportunities of a surface science end station at ELI-ALPS — •Stefan Mathias — I. Physikalisches Institut, Georg-August-Universität Göttingen, 37077 Göttingen

Recent progress in the development of coherent ultrashort laser-based light sources in the extreme ultraviolet regime has paved the way for a completely new generation of real-time photoemission spectroscopy and microscopy techniques. Moreover, when these lightsources are combined with novel spin detectors, "complete" photoemission experiments can be realized, with full access to the spin-resolved transient band-structure dynamics on the (sub-)femtosecond time scale. In my talk, I will discuss our latest experiments using such novel spin detectors in combination with extreme ultraviolet pulses from high-harmonic generation. From these experiments, it can be extrapolated what might be possible with a dedicated surface science end station at the novel ELI-ALPS facility in coming years.

References:

T. Rohwer et al., Nature 471, 490-493 (2011)

M. Plötzing et al., Rev. Sci. Instrum. 87, 043903 (2016)

S. Mathias et al., Nature Comm. 7, 12902 (2016)