SKM 2023 – wissenschaftliches Programm
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SYUE: Symposium Ultrafast Excitation Pathways of Quantum Materials
SYUE 1: Ultrafast Excitation Pathways of Quantum Materials
SYUE 1.4: Hauptvortrag
Mittwoch, 29. März 2023, 11:15–11:45, HSZ 01
Sub-cycle multidimensional spectroscopy of strongly correlated materials — Viktor Valmispild3, Evgeny Gorelov3, Martin Eckstein6, Alexander Lichtenstein4,5, Hideo Aoki7, Mikhail Katsnelson8, Misha Ivanov1,9, and •Olga Smirnova1,2 — 1Max-Born-Institut Berlin — 2Technische Universitaet Berlin — 3European XFEL, Germany — 4Institute of Theoretical Physics, University of Hamburg — 5The Hamburg Centre for Ultrafast Imaging — 6Department of Physics, University of Erlangen-Nuremberg — 7National Institute of Advanced Industrial Science and Technology (AIST), Japan — 8Institute for Molecules and Materials, Radboud University, — 9Department of Physics, Imperial College London
Strongly correlated solids are extremely complex and fascinating quantum systems, where new states continue to emerge and where interaction with light may trigger interplay between them. In this interplay, sub-laser cycle electron response is particularly attractive as a tool for ultrafast manipulation of matter at PHz scale.
We introduce a new type of non-linear multidimensional spectroscopy, which allows us to unravel the sub-cycle dynamics of strongly correlated systems interacting with few-cycle infrared pulses and the complex interplay between different correlated states evolving on the sub-femtosecond time-scale. We use laser-driven two-dimensional Hubbard model to resolve sub-cycle transitions between Mott-insulating and metallic states, and follow pathways of charge and energy flow leading to final non-equilibrium state stabilized by correlations after the end of the laser pulse.