Dresden 2026 – scientific programme

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MA: Fachverband Magnetismus

MA 16: Skyrmions I

MA 16.10: Talk

Tuesday, March 10, 2026, 12:00–12:15, HSZ/0004

Strain-controlled topological magnetic textures in antiskyrmion hosting materials — •Somasree Bhattacharjee¹, István Kézsmárki², and Jan Masell¹ — ¹Institute of Theoretical Solid State Physics (TFP), Karlsruhe Institute of Technology (KIT), 76049 Karlsruhe, Germany — ²Experimental Physics V, Center for Electronic Correlations and Magnetism, Institute of Physics, University of Augsburg, 86159 Augsburg, Germany

In non-centrosymmetric crystal structures with D_2d or S₄ symmetry, anisotropic Dzyaloshinskii-Moriya interaction (DMI) stabilizes antiskyrmions which was recently confirmed experimentally [1,2]. In these materials, easy-axis anisotropy additionally stabilizes skyrmions and non-topological bubbles in certain ranges of external magnetic fields and lamella thicknesses. The competition between magnetic dipolar interaction and DMI renders skyrmions elliptical depending on their handedness. Also, dipolar interaction stabilizes skyrmion caps on top of antiskyrmions which renders them rectangular [3]. In this work, we investigate how external mechanical strain can be used as an additional tuning parameter for the stability of these topological magnetic textures. We show that strain breaks the degeneracy of distinct types of elongated skyrmions and antiskyrmions, which can be used to controllably switch the helicity of the textures. [1] A. Nayak et al. Nature 548, 561 (2017), [2] K. Karube et al. Nat. Mater. 20, 335 (2021), [3] F. S. Yasin, J. Masell, et al., Adv. Mater. 36 (16), 2311737 (2024)

Keywords: Skyrmions; Antiskyrmions; Strain; Switching