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11 June 2024 Many-body interactions in semiconductors revealed by two-dimensional electronic spectroscopy
Thomas Deckert, Daniele Brida
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Proceedings Volume PC12992, Advances in Ultrafast Condensed Phase Physics IV; PC1299203 (2024) https://doi.org/10.1117/12.3021884
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
Multidimensional spectroscopy techniques with high spectral and temporal resolution are instrumental for the experimental access to many-body interactions and energy migration pathways in functional materials and condensed matter systems. Here, we reveal the distinct many-body effects caused by excitons and free charge carriers in bulk semiconductors enabled by accessing the excitation spectral information. In addition, we precisely track the thermalization, cooling, and exciton formation of excited charge carriers at liquid helium temperature as a function of excess energy.
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Thomas Deckert and Daniele Brida "Many-body interactions in semiconductors revealed by two-dimensional electronic spectroscopy", Proc. SPIE PC12992, Advances in Ultrafast Condensed Phase Physics IV, PC1299203 (11 June 2024); https://doi.org/10.1117/12.3021884
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KEYWORDS
Excitons
Semiconductors
Spectroscopes
Spectroscopy
Fluorescence correlation spectroscopy
Absorption
Gallium arsenide
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