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Seminar
"Light-triggered electron dynamics and spin processes in complex materials" by Dr. Inga Ulusoy, University of Heidelberg
Wednesday, 19 June 2019, 13:30-15:00
KIT, Campus Nord
Institute of Nanotechnology
Bldg. 640 Seminar Room 0-167
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Institute of Nanotechnology
Bldg. 640 Seminar Room 0-167
Hermann-von-Helmholtz-Platz 1
76344 Eggenstein-Leopoldshafen
Talk given by
Dr. Inga Ulusoy
Institute of Physical Chemistry
University of Heidelberg
Abstract:
The motion of electrons in mocules occurs on the attosecond time scale, irrespective of the size of the molecule. Electron dynamics connect physics, chemistry and biology and can fundamentally influence processes in all three domains. Of particular interest are processes that can be triggered by light and lead to very distinct outcomes, influencing the properties of materials on the macroscopic scale. One example involves light-triggered spin conversion in transition metal compounds, where a controlled spin-flip opens promising avenues in areas such as sensing, information technology, molecular switches and energy technology. In this talk, insights from a theoretical viewpoint as obtained through relativistic electron dynamics will be used to explain key aspects in spin trapping that takes place in iron compounds. Furthermore, electron motion in molecules as initiated through a laser pulse can be used to trigger a response from the nuclei, directing the outcome of a chemical reaction. The generated electron-nuclear wave packets can quickly decohere, but also lead to recurrence of coherences that manifest in a quantum beating. Finally, static electromagnetic fields can be used to tune properties of the materials.
This event is part of the eventgroup INT Talks
Homepage
https://www.int.kit.edu/events.php
https://www.int.kit.edu/events.php
Organizer
Prof. Dr. Martin Wegener
Angewandte Physik und Institut für Nanotechnologie
Karlsruher Institut für Technologie (KIT)
Karlsruhe
Mail: martin wegener ∂ kit edu
https://www.aph.kit.edu/wegener/
Prof. Dr. Martin Wegener
Angewandte Physik und Institut für Nanotechnologie
Karlsruher Institut für Technologie (KIT)
Karlsruhe
Mail: martin wegener ∂ kit edu
https://www.aph.kit.edu/wegener/
Targetgroup
Interested / Everyone
Interested / Everyone