SKM 2023 – scientific programme
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MA: Fachverband Magnetismus
MA 38: Micro- and Nanostructured Magnetic Materials
MA 38.2: Talk
Thursday, March 30, 2023, 11:45–12:00, HSZ 401
Chirality coupling in curvilinear nanoarchitectures — Oleksii M. Volkov1, Daniel Wolf2, •Oleksandr V. Pylypovskyi1,3, Attila Kákay1, Denis D. Sheka4, Bernd Büchner2,5, Jürgen Fassbender1, Axel Lubk2,5, and Denys Makarov1 — 1Helmholtz-Zentrum-Dresden-Rossendorf, Dresden, Germany — 2Institute for Solid State Research, IFW Dresdenm Dresden, Germany — 3Kyiv Academic University, Kyiv, Ukraine — 4Taras Shevchenko National University of Kyiv, Kyiv, Ukraine — 5Institute of Solid State and Materials Physics, TU Dresden, Dresden, Germany
Symmetry effects are key building blocks of condensed matter physics as they define not only interactions but also resulting responses for the intrinsic order parameter. Namely, in magnetism geometric curvature governs the appearance of chiral and anisotropic responses [1], that introduce a new toolbox to create artificial chiral nanostructures from achiral magnetic materials [2,3]. Here, we demonstrate both theoretically and experimentally the existence of non-local chiral effects in geometrically curved asymmetric permalloy caps with the vortex texture. We find that the equilibrium vortex core obtain bend and curling deformation, that are dependent on the geometric symmetries and magnetic texture parameters.
[1] D. D. Sheka et al., Comm. Phys. 3, 128 (2020).
[2] O. M. Volkov et al., Phys. Rev. Lett, 123, 077201 (2019).
[3] D. Makarov et al., Adv. Mater. 34, 2101758 (2022).