Ultrafast soft x-ray spectroscopy: Microscopic insights towards novel function
Prof. Dr. Uwe Bovensiepen
Universität Duisburg-Essen, Faculty of Physics and Center for Nanointegration
Hybride Veranstaltung
vollständiger Text
The microscopic mechanisms which determine technological applications in diverse fields
like data storage or energy conversion occur on time scales which represent their interaction
strength. For example, the coupling of electrons, their spins, and the crystal lattice occur on
energy scales of 10 to several 100 meV, which implies that they occur on sub-picosecond
timescales. The corresponding phenomena are considered ultrafast. Experiments in the time
domain are, by now, regarded as very rewarding because one can follow how the inter-
actions modify the material properties while they act. As a result, various kinds of solid-state
spectroscopies are by now available in the ultrafast time domain.
In this talk recent results obtained at user facilities like the synchrotron light source BESSY II,
the European X-ray Free Electron Laser, and the SLAC-MeV Ultrafast Electron Diffraction
Instrument will be discussed for heterostructures, bulk ferromagnets, and organic systems.