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O: Fachverband Oberflächenphysik
O 59: Mini-Symposium: Coherent band structure engineering with light I
O 59.5: Talk
Wednesday, March 3, 2021, 12:00–12:15, R2
Electromagnetic dressing of the electron energy spectrum at high momenta — •David Schmitt1, Marius Keunecke1, Marcel Reutzel1, Alexander Osterkorn2, Tridev A. Mishra2, Christina Möller1, Wiebke Bennecke1, G. S. Matthijs Jansen1, Daniel Steil1, Salvatore R. Manmana2, Sabine Steil1, Stefan Kehrein2, and Stefan Mathias1 — 11. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany — 2Institut für Theoretische Physik, Georg- August-Universität Göttingen, Göttingen, Germany
The coherent manipulation of quantum states is a promising route towards new emerging phases of solids. The concept of Floquet engineering has been used in various theoretical approaches. However, the experimental identification of such light dressed eigenstates is challenging. In this contribution, we discuss the generation of photon dressed sidebands throughout the full surface Brillouin zone when probed with two-color time- and angle-resolved photoelectron spectroscopy. We put special focus onto the differentiation of the laser-assisted photoelectric effect, the generation of Flouqet-Bloch bands, and scattering amplitude between both cases at large in-plane momenta, i.e. at the edges of the surface Brillouin zone.