Berlin 2024 – scientific programme

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MA: Fachverband Magnetismus

MA 46: Poster II

MA 46.3: Poster

Thursday, March 21, 2024, 15:00–18:00, Poster C

Manipulating magnetic textures with scanning local magnetic field — •Minh Duc Tran and Mathias Kläui — Institute of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany

We demonstrate local manipulation of magnetic textures in CoFeB/MgO multilayers based on the interaction between the sample and a customized magnetic force microscopy probe. By varying the scan height, write speed, number of scans, and specific magnetic coating of the tip, a tunable local stray field can induce desirable manipulation of the magnetic system. Complex topological textures such as skyrmions can be nucleated and manipulated individually, either by collapsing the stripe domains or cutting them into skyrmions with the aid of an external magnetic field [1]. Our results offer deterministic control of a skyrmion at a localized area, which can be beneficial, for instance, in future applications in skyrmion racetrack memory [2].

[1] A. V. Ognev et al., ACS Nano 14, 11, 14960-14970 (2020).

[2] A. Casiraghi et al., Commun. Phys. 2, 145 (2019).

Keywords: magnetic force microscopy; skyrmions; magnetic multilayers