Continuous illumination picosecond imaging using a delay line detector in a transmission electron microscope

Ultramicroscopy, vol. 233, pp. 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 ∼122ps 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.

Authors 13

1. Teresa Weßels corresponding Aachen Lehrstuhl für Experimentalphysik IV E

   Forschungszentrum Jülich · Ernst Ruska Centre · RWTH Aachen University

   Affiliation as printed

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany; Lehrstuhl für Experimentalphysik IV E, RWTH Aachen University, 52056 Aachen, Germany. Electronic address: t.wessels@fz-juelich.de

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

   Lehrstuhl für Experimentalphysik IV E, RWTH Aachen University, 52056 Aachen, Germany

2. Simon Däster

   ETH Zurich · Laboratory for Solid State Physics

   Affiliation as printed

   Laboratory for Solid State Physics, ETH Zurich, 8093 Zurich, Switzerland

3. Yoshie Murooka

   Forschungszentrum Jülich · Ernst Ruska Centre

   Affiliation as printed

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

4. Benjamin Zingsem

   University of Duisburg-Essen

   Affiliation as printed

   Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057 Duisburg, Germany

   Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg–Essen, 47057 Duisburg, Germany

5. Vadim Migunov Aachen Central Facility for Electron Microscopy

   Forschungszentrum Jülich · Ernst Ruska Centre · RWTH Aachen University

   Affiliation as printed

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany; Central Facility for Electron Microscopy (GFE), RWTH Aachen University, 52074 Aachen, Germany

   Central Facility for Electron Microscopy (GFE), RWTH Aachen University, 52074 Aachen, Germany

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

6. Maximilian Kruth

   Forschungszentrum Jülich · Ernst Ruska Centre

   Affiliation as printed

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

7. Simone Finizio

   Paul Scherrer Institute · Swiss Light Source

   Affiliation as printed

   Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland

8. Peng‐Han Lu

   Forschungszentrum Jülich · Ernst Ruska Centre

   Affiliation as printed

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

9. András Kovács

   Forschungszentrum Jülich · Ernst Ruska Centre

   Affiliation as printed

   Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

10. A. Oelsner

    Mainzer Zentrum für Digitalität in den Geistes- und Kulturwissenschaften

    Affiliation as printed

    Surface Concept GmbH, 55124 Mainz, Germany

11. Knut Müller‐Caspary

    Forschungszentrum Jülich · Ernst Ruska Centre · Ludwig-Maximilians-Universität München

    Affiliation as printed

    Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany; Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377 Munich, Germany

    Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377 Munich, Germany

    Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany

12. Yves Acremann

    ETH Zurich · Laboratory for Solid State Physics

    Affiliation as printed

    Laboratory for Solid State Physics, ETH Zurich, 8093 Zurich, Switzerland

13. Rafal E. Dunin‐Borkowski

    Forschungszentrum Jülich · Ernst Ruska Centre

    Affiliation as printed

    Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany