Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.35: Poster
Monday, March 9, 2026, 09:30–12:30, P2
Design and Implementation of Voltage Gating in Weyl Semimetals — •Kamila Szczurek1, Dola Chakrabartty1, Lilian Prodan1, István Kézsmárki1, Kai Litzius1, and Felix Büttner1,2 — 1Center for Electronic Correlations and Magnetism, University of Augsburg, Augsburg, Germany — 2Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany
Weyl semimetals are promising candidates for next generation spintronic devices due to their exotic electronic properties, expected to lead to low power magnetic switching. These promising properties were predicted by theoretical work but have yet to be verified. This research presents the design and implementation of an experimental setup aimed at enabling voltage gating studies of Weyl semimetals using magneto-optical Kerr effect (MOKE) techniques. A polar laser MOKE system in combination with a full-field Kerr microscope was developed and tested, with particular focus on the alignment of the components during operation in a shared setup. A small lamella of the ferromagnetic Weyl semimetal Fe3Sn2 was used as the initial sample due to the material’s large anomalous Hall response and tunable Berry curvature effect, making it particularly attractive for voltage-control studies using MOKE. However, the limited size and geometry of a lamella introduced challenges in obtaining a clear MOKE signal, highlighting the neccessity for combined full-field and laser MOKE measurements. Despite practical challenges, the setup was successfully commissioned, laying the groundwork for future measurements under applied gate voltages.
Keywords: Fe3Sn2; Weyl Semimetal; Voltage Gating