Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 21: Poster I

MA 21.5: Poster

Dienstag, 13. März 2018, 09:30–13:00, Poster A

Resonant Soft X-Ray Scattering Ferromagnetic Resonance in the chiral magnet Cu₂OSeO₃ — •Simon Pöllath¹, Aqeel Aisha¹, Chen Luo^1,2, Hanjo Ryll², Florin Radu², and Christian Back¹ — ¹Department of Physics, University of Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany — ²Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein Str. 15, 12489, Berlin, Germany

We report on X-ray Ferromagnetic Resonance (X-FMR) in scattering geometry in the skyrmion hosting chiral magnet Cu₂OSeO₃. Using a detector system which provides vertical and horizontal scanning capability mounted within the magnet bore, the diffraction patterns of the helical, conical and skyrmion phases are obtained. Through mapping of the magnetic scattering around the forbidden structural (001/2) Bragg peak, in resonant scattering at the Cu L₃ edge, we can distinguish and probe individually each of the helical, conical and skyrmion magnetic configurations. The system is excited via microwaves which at the resonant frequencies is directly as magnetic scattering contrast. The measurements were performed at the VEKMAG end station.