Agenda

Prochain séminaire LANEF/Matériaux Quantiques :

Jeudi 14 novembre 2024 à 14h00

Marisel Di Pietro (Max Planck Institute for Chemical Physics of Solids)

“ Revealing the three-dimensional nature of the field-driven movement of magnetic topological defects “

Pour accéder à ce séminaire :

Institut Néel CNRS, Bâtiment K, Salle Rémy Lemaire  (K223)

Résumé : Understanding the processes of creation, propagation, and annihilation of topological defects is key to gaining control over the different processes they mediate. In magnetism, for instance, magnetic switching is mediated by domain wall motion while vortex core reversal is driven by Bloch point singularities. Here, we focus on magnetic dislocations in stripe domains and their role in the field-driven continuous rotation of the stripes. By harnessing both 2D and 3D magnetic imaging, specifically combining 3D soft X-ray magnetic vectorial imaging with in situ magnetic fields, not only we track and characterize the motion of these defects, but also understand how their underlying 3D configuration influences their behavior. These advances establish the necessary capabilities to study the behavior of topological textures in 3D, opening the door to insights into the field-driven behavior of buried three-dimensional magnetic textures.

Les organisatrices :

Elsa Lhotel (elsa.lhotel@neel.cnrs.fr)
Florence Levy-Bertrand (florence.levy-bertrand@neel.cnrs.fr)