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MA: Fachverband Magnetismus

MA 40: Poster Magnetism II

MA 40.51: Poster

Thursday, March 30, 2023, 14:00–16:00, P2/EG

Light-poling of antiferromagnetic domains in a magnetoelectric LiCoPO4 — •Jakub Vit1,2, Oleksiy Pashkin3, Vilmos Kocsis4, Yasujiro Taguchi5, Istvan Kezsmarki6, and Sandor Bordacs11Budapest University of Technology and Economics, Hungary — 2Institute of Physics, Czech Academy of Sciences, Czechia — 3Helmholtz-Zentrum Dresden-Rossendorf, Germany — 4Institut für Festkörperforschung, Leibniz IFW-Dresden, Germany — 5RIKEN Center for Emergent Matter Science (CEMS), Japan — 6University of Augsburg, Germany

We selected antiferromagnetic domains in a magnetoelectric LiCoPO4 single crystal by illuminating the sample by light while cooling through the Néel temperature. The experimental results and symmetry analysis indicate that the thermal gradient and resulting heat flow are responsible for such a novel effect: Propagation of thermally-activated quasi-particles is nonequivalent in different antiferromagnetic domains. The microscopic mechanism behind the observed effect is not clear at the moment, calling for future theoretical modeling.

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