Regensburg 2019 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 45: Poster Tuesday: Ultrafast Processes
O 45.1: Poster
Dienstag, 2. April 2019, 18:00–20:00, Poster D
Four-dimensional XUV time- and angle-resolved photoemission spectroscopy of solids at 500 kHz — Michele Puppin1,2, Christopher W. Nicholson1,3, •Samuel Beaulieu1, Shuo Dong1, Tommaso Pincelli1, Patrick Xian1, Maciej Dendzik1, Yoav W. Windsor1, Yunpei Deng1,4, Claude Monney1,3, Martin Wolf1, Laurenz Rettig1, and Ralph Ernstorfer1 — 11Department of Physical Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin — 22Laboratory of Ultrafast Spectroscopy, ISIC, and Lausanne Centre for Ultrafast Science (LACUS), Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland — 34Department of Physics, University of Fribourg, Chemin du Musee 3, 1700 Fribourg, Switzerland — 43Paul Scherrer Institute, Swiss FEL, 5232 Villigen PSI, Switzerland
We report on four-dimensional time- and angle-resolved photoelectron spectroscopy (trARPES) employing a 500 kHz extreme-ultraviolet (XUV) light source operating at 21.7 eV probe photon energy [1]. This beamline is coupled to a state-of-the-art time-of-flight momentum microscope (METIS 1000, SPECS GmbH) that allows us to measure the out-of-equilibrium multidimensional electronic band structure of solids (including excited states) in the entire Brillouin zone and with a temporal system response function below 40 fs. Exemplary data on inorganic and organic semiconductors will be presented. [1] Puppin et al., arXiv:1811.06939v1 [physics.ins-det] (2018).