SKM 2021 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 5: Posters Magnetism II
MA 5.22: Poster
Dienstag, 28. September 2021, 10:00–13:00, P
Giant anomalous Hall and Nernst eff ect in magnetic cubic Heusler compounds — •Jonathan Noky1, Yang Zhang2, Claudia Felser1, and Yan Sun1 — 1Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 2Massachusetts Institute of Technology, Cambridge, USA
There is an ongoing search for materials with large anomalous Hall and Nernst effects. These effects can be utilized in applications for data storage, thermoelectric power generation, and a high temperature quantum anomalous Hall effect, when preparing them as thin films. A promising class of materials for this purpose are the Heusler compounds because they can be grown in thin films and have a high Curie temperature. In these systems, the interplay between magnetism and topological band structures leads to a strongly enhanced Berry curvature. This can consequently create large anomalous Hall and Nernst effects.
In this work, we provide a comprehensive study of the intrinsic anomalous transport properties for magnetic cubic full Heusler compounds and we illustrate that several Heusler compounds outperform the best so far reported materials. Additionally, the results reveal the general importance of mirror planes in combination with magnetism for giant anomalous Hall and Nernst effects, which should be valid for all linear responses (spin Hall effect, spin orbital torque, etc.) dominated by intrinsic contributions.