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15 March 2023 Coherent control of the phase transition in indium nanowires on silicon
Jan Gerrit Horstmann, Hannes Böckmann, Felix Kurtz, Gero Storeck, Bareld Wit, Stefan Wippermann, Claus Ropers
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Proceedings Volume PC12419, Ultrafast Phenomena and Nanophotonics XXVII; (2023) https://doi.org/10.1117/12.2647512
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Solid-state surface systems are particularly attractive because of their modified electronic, lattice and spin structures, resulting in strongly altered physical and chemical properties compared with the bulk. We have recently developed Ultrafast Low-Energy Electron Diffraction (ULEED) in a laser pump/electron-probe scheme to explore optically-induced structural dynamics at surfaces on their intrinsic time scales. This talk will introduce the basic principles of ULEED and discuss our recent advances regarding the coherent vibrational control over the phase transition in indium nanowires on the (111) surface of silicon by manipulating the vibrational amplitudes of key lattice modes. This mode-selective control of solids and surfaces could open new routes to switching chemical and physical functionalities, enabled by metastable and non-equilibrium states.
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Jan Gerrit Horstmann, Hannes Böckmann, Felix Kurtz, Gero Storeck, Bareld Wit, Stefan Wippermann, and Claus Ropers "Coherent control of the phase transition in indium nanowires on silicon", Proc. SPIE PC12419, Ultrafast Phenomena and Nanophotonics XXVII, (15 March 2023); https://doi.org/10.1117/12.2647512
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KEYWORDS
Indium
Nanowires
Silicon
Solid state electronics
Solid state lasers
Solids
Structural dynamics
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