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5 March 2021 Light-induced band structure engineering probed by photoelectron spectroscopy
Marcel Reutzel
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Proceedings Volume 11684, Ultrafast Phenomena and Nanophotonics XXV; 1168407 (2021) https://doi.org/10.1117/12.2577134
Event: SPIE OPTO, 2021, Online Only
Abstract
On-demand engineering of condensed matter materials by external stimuli is a promising route for the dynamical control of physical and chemical properties. By applying a strong external perturbation, the driven system’s eigenstates are dependent on the crystal potential, and the periodicity of the external stimuli. In this contribution, I present two complementary case studies that facilitate the quantification of such light-engineered band structures using variants of photoelectron spectroscopy. I will exemplify the application of coherent two-dimensional photoelectron spectroscopy to resolve a dynamical band gap opening on the surface bands of Cu(111). Additionally, I will report on time-resolved momentum microscopy experiments on Au(111) that focus on the generation of light-engineered band structures throughout the full surface Brillouin zone.
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Marcel Reutzel "Light-induced band structure engineering probed by photoelectron spectroscopy", Proc. SPIE 11684, Ultrafast Phenomena and Nanophotonics XXV, 1168407 (5 March 2021); https://doi.org/10.1117/12.2577134
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KEYWORDS
Photoemission spectroscopy
Structural engineering
Lithium
Microscopy
Condensed matter
Crystals
Extreme ultraviolet
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