SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 23: Poster Magnetism I

MA 23.36: Poster

Dienstag, 28. März 2023, 17:00–19:00, P1

Imaging magnetization dynamics of non-bubble domains in ferromagnetic multilayer systems for quantification of Dzyaloshinskii-Moriya interaction (DMI) — •Arne Vereijken¹, Sapida Akhundzada¹, Florian Ott¹, Maxwell Li², Tim Mewes³, Michael Vogel¹, Vincent Sokalski², and Arno Ehresmann¹ — ¹Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Kassel, Germany — ²Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, USA — ³Department of Physics and Astronomy, University of Alabama, Tuscaloosa, USA

DMI promotes chiral coupling between spins [1], giving rise to robust, chiral spin textures, e.g., skyrmions with excellent properties for information storage and processing [2]. Recently it has been demonstrated that the DMI is measurable via imaging of magnetization dynamics of bubble domains, which possesses great potential in becoming an experimental standard method [3]. By enhancing this method with a self-segmentation for growth identification, more complex domain shapes may be accessible. We systematically studied the DMI in a perpendicularly magnetized ferromagnet/heavy metal system with different dendrimeric domain textures. [1] T. Moriya, New Mechanism of Anisotropic Superexchange Interaction, Phys. Rev. Lett. 4 (1960) [2] C. Back et al., The 2020 Skyrmionics Roadmap, J. Phys. D 53.36 (2020) [3] A. Magni et al., Key Points in the Determination of the Interfacial DMI from Asymmetric Bubble Domain Expansion, (2022)