January 8, 2024 to March 22, 2024
Institut Henri Poincaré
Europe/Paris timezone
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Topological and out of equilibrium magnetic textures and their effect on itinerant electrons

Feb 27, 2024, 11:00 AM
1h 30m
Institut Henri Poincaré

Institut Henri Poincaré

11, Rue Pierre et Marie Curie 75005 Paris


Pierre Pujol (Université de Toulouse 3, Paul Sabatier)


The physics of topological magnetic textures like skyrmions and bimerons, and in particular the issue of how to isolate and manipulate them individually, is a subject of major importance nowadays in the community of magnetism. We propose a model with a rich phase diagram containing these topological magnetic textures that appear in crystalline, fluid and glassy phases. I'll then discuss the study of this rich magnetic background on conduction electrons that are coupled to the local spins. We study how the different magnetic textures stabilised in this model induce an anomalous Quantum Hall effect. We observe in the ordered skyrmion phase the appearance of Landau levels which persist even in the skyrmion-liquid regime and gradually disappear as the skyrmion density decreases.

The seminars will also be accessible online: https://www.ihp.fr/en/live and/or https://univ-cotedazur.zoom.us/j/3777115746?omn=83887855821

Recording will be available later on: https://www.carmin.tv/en/

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