Seminaire – Thorsten Hesjedal

Thorsten Hesjedal (Clarendon Laboratory, University of Oxford, Royaume-Uni), donnera un séminaire le 10 mars  2025 à 11h dans l’auditorium de TRT Thales.

Titre : Exploration of Hybrid Skyrmion Systems using Resonant Elastic X-ray Scattering
Résumé :
A major challenge in topological magnetism lies in the three-dimensional (3D) exploration of the magnetic textures. Recent efforts have focused on understanding how 2D skyrmion sheets vertically stack to form distinct types of 3D topological strings, how these strings behave when clamped at an interface, how they couple across interfaces of dissimilar materials, and how these ordered states can be manipulated.

Our team has advanced the capabilities of polarization- and energy-dependent resonant elastic x-ray scattering (REXS) to probe the 3D structure of magnetic skyrmions and related topological objects, as well as their dynamics. In this talk, I will present the latest examples of hybrid skyrmion systems, with a particular focus on 3D objects at or near surfaces and their dynamical properties.