Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 54: Magnetic textures: Transport and dynamics III

MA 54.4: Vortrag

Freitag, 5. April 2019, 10:15–10:30, H37

Topological Hall effect in thin films of Mn1.5PtSn — •Peter Swekis1,2, Anastasios Markou1, Dominik Kriegner1, Jacob Gayles1, Richard Schlitz2,3, Walter Schnelle1, Sebastian T. B. Goennenwein2,3, and Claudia Felser11Max-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 Mn1.5PtSn 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 Mn2−xPtSn by extracting the effect for multiple stoichiometries (x = 0.5, 0.25, 0.1).

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