SKM 2021 – scientific programme
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MA: Fachverband Magnetismus
MA 17: Skyrmions II (joint session MA/KFM)
MA 17.10: Talk
Friday, October 1, 2021, 12:30–12:45, H5
Decoding of complex magnetic structures from Hall-effect measurements — •Juba Bouaziz1, Hiroshi Ishida2, Samir Lounis1,3, and Stefan Blügel1 — 1Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich & JARA, D-52425 Jülich, Germany — 2College of Humanities and Sciences, Nihon University, Sakura-josui, Tokyo 156-8550, Japan — 3Faculty of Physics, University of Duisburg-Essen, 47053 Duisburg, Germany
It is generally accepted that the Hall response of complex spin-textures is given in terms of the linear superposition of the ordinary (OHE), the anomalous (AHE) and the topological Hall effect (THE). This addition is not questioned and is experimentally used to relate Hall responses to magnetic textures. Here, using a simple and transparent multiple scattering approach, we show that this relation is incomplete [1]. We introduce a missing contribution, the non-collinear Hall effect (NHE). The angular form of this term depends on the underlying crystal structure. The presence of the NHE may results in a substantial Hall response in non-collinear magnets without invoking the presence of non-coplanar spin textures or magnetic skyrmions and enables the decoding of exotic non-collinear magnetic textures that have been observed in itinerant magnets. [1] J. Bouaziz et al. PRL 126, 147203 (2021).
This work was supported by DFG through SPP 2137 "Skyrmionics" (Project BL444/16-1), SFB 1238 (project C01) and SFB/TRR 173 (project MO 1731/5-1), DARPA TEE program, through grant MIPR# HR0011831554 from DOI, and ERC- consolidator grant 681405-DYNASORE.