Journal Article

FZJ-2022-00417

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Continuous illumination picosecond imaging using a delay line detector in a transmission electron microscope

Weßels, T. (Corresponding author)FZJ* ; Däster, S.Extern* ; Murooka, Y.FZJ* ; Zingsem, B.FZJ* ; Migunov, V. ; Kruth, M.FZJ* ; Finizio, S.Extern* ; Lu, P.-H.FZJ* ; Kovács, A.FZJ* ; Oelsner, A. ; Müller-Caspary, K.FZJ* ; Acremann, Y. ; Dunin-Borkowski, R. E.FZJ*

2022
Elsevier Science Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/30159  doi:10.1016/j.ultramic.2021.113392

Abstract: Progress towards analysing transitions between steady states demands improvements in time-resolved imaging, both for fundamental research and for applications in information technology. Transmission electron microscopy is a powerful technique for investigating the atomic structure, chemical composition and electromagnetic properties of materials with high spatial resolution and precision. However, the extraction of information about dynamic processes in the ps time regime is often not possible without extensive modification to the instrument while requiring careful control of the operation conditions to not compromise the beam quality. Here, we avoid these drawbacks by combining a delay line detector with continuous illumination in a transmission electron microscope. We visualize the gyration of a magnetic vortex core in real space and show that magnetization dynamics up to frequencies of 2.3 GHz can be resolved with down to 122 ps temporal resolution by studying the interaction of an electron beam with a microwave magnetic field. In the future, this approach promises to provide access to resonant dynamics by combining high spatial resolution with sub-ns temporal resolution.

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Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 5351 - Platform for Correlative, In Situ and Operando Characterization (POF4-535) (POF4-535)
2. DFG project 405553726 - TRR 270: Hysterese-Design magnetischer Materialien für effiziente Energieumwandlung (405553726) (405553726)
3. 3D MAGiC - Three-dimensional magnetization textures: Discovery and control on the nanoscale (856538) (856538)
4. ESTEEM3 - Enabling Science and Technology through European Electron Microscopy (823717) (823717)
5. moreSTEM - Momentum-resolved Scanning Transmission Electron Microscopy (VH-NG-1317) (VH-NG-1317)

Appears in the scientific report 2022

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Database coverage:
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