Regensburg 2019 – scientific programme

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MA: Fachverband Magnetismus

MA 54: Magnetic textures: Transport and dynamics III

MA 54.4: Talk

Friday, April 5, 2019, 10:15–10:30, H37

Topological Hall effect in thin films of Mn_1.5PtSn — •Peter Swekis^1,2, Anastasios Markou¹, Dominik Kriegner¹, Jacob Gayles¹, Richard Schlitz^2,3, Walter Schnelle¹, Sebastian T. B. Goennenwein^2,3, and Claudia Felser¹ — ¹Max-Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany — ²Institut für Festkörper- und Materialphysik, Technische Universität Dresden, 01062 Dresden, Germany — ³Center for Transport and Devices of Emergent Materials, Technische Universität Dresden, 01062 Dresden, Germany

Spin chirality in metallic materials with non-coplanar magnetic order can give rise to a Berry phase induced topological Hall effect. Here, we report the observation of the topological Hall effect in high-quality films of Mn_1.5PtSn below a spin reorientation transition temperature. We find, that the maximum topological Hall resistivity is of comparable magnitude as the anomalous Hall resistivity, with their relation depending on the spin reorientation. Further, we underline the robustness of the topological Hall effect in Mn_2−xPtSn by extracting the effect for multiple stoichiometries (x = 0.5, 0.25, 0.1).