Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationGeometry-induced motion of magnetic domain walls in curved nanostripes
Yershov, K. V.; Kravchuk, V. P.; Sheka, D. D.; Pylypovskyi, O. V.; Makarov, D.; Gaididei, Y.
Abstract
Dynamics of topological magnetic textures are typically induced externally by, e.g., magnetic fields or spin/charge currents. Here, we demonstrate the effect of the internal-to-the-system geometry-induced motion of a domain wall in a curved nanostripe. Being driven by a gradient of the curvature of a stripe with biaxial anisotropy, transversal domain walls acquire remarkably high velocities of up to 100m/s and do not exhibit any Walker-type speed limit. We pinpoint that the inhomogeneous distribution of the curvature-induced Dzyaloshinskii-Moriya interaction is a driving force for the motion of a domain wall. Although we showcase our approach on the specific Euler spiral geometry, the approach is general and can be applied to a wide class of geometries.
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Physical Review B 98(2018), 060409
DOI: 10.1103/PhysRevB.98.060409
Cited 38 times in Scopus
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Permalink: https://www.hzdr.de/publications/Publ-27939