SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 12: Skyrmions II
MA 12.3: Vortrag
Dienstag, 28. März 2023, 10:00–10:15, HSZ 02
In-situ correlation of the anomalous Hall effect with the occurrence of topological and non-topological magnetic phases in Mn1.4PtSn — •Darius Pohl1, Andy Thomas2, Sebastian Schneider1, Dominik Krieger3, Yejin Lee2, Praveen Vir4, Claudia Felser4, Moritz Winter1,4, and Bernd Rellinghaus1 — 1Dresden Center for Nanoanalysis (DCN), cfaed, TU Dresden, D-01062 Dresden, Germany — 2Leibniz Institute for Solid State and Materials Research Dresden, D-01062 Dresden, Germany — 3Institute of Solid State and Materials Physics, TU Dresden, D-01062 Dresden, Germany — 4Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
Topologically protected (anti-)skyrmions are potential future information carriers, since they can be electrically manipulated and detected, e.g., by measuring their Hall signature. Hall measurements are usually conducted on samples with different geometries as compared to those used for Lorentz TEM magnetic imaging. In magnetic phases which are strongly influenced by dipole-dipole interactions, such comparisons are problematic. We devised an experimental setup that bridges this gap and allows for the conduction of in-situ Hall measurements in a TEM. Besides proof-of-principle experiments on thin Ni films, our new setup allows us to follow in detail the field dependence of the Hall voltage while simultaneously monitoring the magnetic phases in Mn1.4PtSn. This provides valuable insights into the existence and nature of an intensely debated electrical signature of skyrmionics structures. Financial support by DFG through SPP 2137 is gratefully acknowledged.