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Dresden 2020 – scientific programme

The DPG Spring Meeting in Dresden had to be cancelled! Read more ...

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MA: Fachverband Magnetismus

MA 45: Magnonics I

MA 45.8: Talk

Thursday, March 19, 2020, 11:30–11:45, HSZ 401

Non-standing spin-waves in confined micron-sized structures imaged with time-resolved STXM — •Santa Pile1, Taddäus Schaffers1, Sven Stienen2, Martin Buchner1, Sebastian Wintz3, Sina Mayr4, Johannes Förster3, Verena Ney1, Rysard Narkowicz2, Kilian Lenz2, Markus Weigand5, Jürgen Lindner2, and Andreas Ney11Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, 4040 Linz, Austria — 2Helmholtz-Zentrum Dresden-Rossendorf, Germany — 3Max Planck Institute for Intelligent Systems, Stuttgart, Germany — 4Paul Scherrer Institute, Villigen PSI, Switzerland — 5Helmholtz-Zentrum Berlin, Berlin, Germany

The STXM-FMR setup enables the visualization of the high frequency magnetization dynamics in the GHz regime with a high lateral resolution of nominally 35 nm and a time resolution of 17.4 ps [1]. In this contribution we present the results for the magnetic Ni80Fe20 micron-sized stripes with dimensions: 5x1x0.03 µm3. For FMR and STXM-FMR measurements a static magnetic field was applied in the plane of the stripes. Both FMR and STXM-FMR measurements confirm that quasi-uniform and spin-wave modes can be excited in the samples. With increasing the static magnetic field it is possible to observe the transition from one mode to another and also a superposition of the modes in-between the FMR signals, when a non-standing character of the spin-waves is visible. Financial support by the Austrian Science Fund (FWF), Project No. I-3050 is gratefully acknowledged.

[1] T. Schaffers et al., Nanomaterials 9, 940 (2019).

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