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MA: Fachverband Magnetismus

MA 52: Poster II

MA 52.25: Poster

Thursday, March 15, 2018, 15:00–18:00, Poster C

Towards ultrafast transmission electron microscopy at high repetition rates — •John H. Gaida, Marcel Möller, and Claus Ropers — 4th Physical Institute, Georg-August-University, Göttingen, Germany

Lorentz microscopy is a widely applied technique for the nanoscale mapping of magnetization structures. Its adaptation to time-resolved imaging offers fascinating prospects for studying ultrafast magnetization dynamics.

The Göttingen Ultrafast Transmission Electron Microscope (UTEM) is a newly developed instrument, which allows to study ultrafast magnetization and demagnetization dynamics, which are either optically induced or driven by radiofrequency excitation [1].

In this contribution, we investigate the generation of photoelectron pulses and the possibility to carry out ultrafast Lorentz microscopy at high MHz repetition rates.

[1] A. Feist et al., Ultramicroscopy 176 (2016)