Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 41: Poster III
MA 41.35: Poster
Donnerstag, 20. März 2025, 15:00–17:30, P3
Direct Manipulation of Topological Spin Textures with Magnetic Force Microscopy — •Minh Duc Tran1, Elizabeth Martin Jefremovas1, Mona Bhukta1, Thomas Brian Winkler1, Robert Frömter1, Dennis Meier2, and Mathias Kläui1,3 — 1Institute of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany — 2Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), 7034 Trondheim, Norway — 3Center for Quantum Spintronics, Norwegian University of Science and Technology, 7491 Trondheim, Norway
We present a method to manipulate skyrmions in CoFeB-based multilayer stacks using magnetic force microscopy (MFM). By employing single-pass MFM scans, we eliminate disturbances from the initial topography mapping, allowing for direct control over the interaction with the complex spin textures [1]. Through precise tuning of the scan parameters such as lift height and write speed, we achieve localized transformations of the metastable skyrmion state into the energetically favored stripe domains [2]. Our findings offer a potential approach for generating more exotic spin textures by selectively creating/annihilating magnetic domains in a confined region [3].
[1] A. V. Ognev et al., ACS Nano 14, 11, 14960-14970 (2020).
[2] A. Casiraghi et al., Commun. Phys. 2, 145 (2019).
[3] E. M. Jefremovas et al., Appl. Phys. Lett. 125, 192402 (2024).
Keywords: magnetic force microscopy; skyrmions; magnetic multilayers