Regensburg 2022 – scientific programme
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O: Fachverband Oberflächenphysik
O 33: Poster Tuesday: Ultrafast Processes 2
O 33.3: Poster
Tuesday, September 6, 2022, 11:00–13:00, P3
Towards time-resolved photoemission orbital tomography on van-der-Waals heterostructures — •Wiebke Bennecke, David Schmitt, Jan Phillip Bange, Mattis Langendorf, Katharina D. Feeser, Daniel Steil, Sabine Steil, Marcel Reutzel, G. S. Matthijs Jansen, and Stefan Mathias — I. Physikalisches Institut, Georg-August-Universität Göttingen
Heterostructures of two-dimensional van-der-Waals materials with molecular thin films provide an exceptional platform to tailor electronic energy level alignments that govern the optoelectronic response of such materials. In addition to the energy-level alignment, a detailed knowledge of the electronic wavefunctions in these systems would help to fundamentally understand optical excitations, exciton generation, charge-transfer and relaxation processes. Here, time-resolved orbital tomography is a promising method that potentially provides such information. On this poster, we show first results of femtosecond orbital tomography of PTCDA monolayers adsorbed on bulk as well as monolayer WSe2.