Ultrafast Electron Microscopy (UEM) facilitates microscopic imaging, diffraction, and spectroscopy at picosecond timescales.
In this online seminar, Prof. Dr. Jonas Weissenrieder [LinkedIn] will talk about the recently constructed UEM set-up at KTH as well as some exciting results achieved using the ASI CheeTah M3 Hybrid Pixel Detector for both diffraction and imaging.
The application of a novel combination of transient grating excitation with Lorentz UEM will be discussed and the professor will share recent, experimental, time-resolved results that provide detailed and real space information of the magnetic precession.
Highlights:
- Methods to control and detect magnetization dynamics achieving nanometer and picosecond resolution.
- Promising future applications; the study of spin waves and dynamic behavior in ferrimagnetic and antiferromagnetic systems.
- Review of a recent study on photo driven structural dynamics in Td-WTe2.
- Description of the structural response of WTe2 following laser excitation, including excitation of an A1 shear phonon and a photo driven phase transition.
- The importance of including both short- and long-range optical field interactions in stacking order of 2-dimensional transition metal dichalcogenides.