Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.19: Poster
Monday, March 9, 2026, 09:30–12:30, P2
Time-resolved resonant magnetic small-angle scattering with a laser-driven soft-X-ray plasma source — •Pascal Wernicke1, Maximilian Mattern1, Johannes Tümmler1, Stefan Eisebitt1, 2, and Daniel Schick1 — 1Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Berlin, Germany — 2Institut für Physik & Astronomie, TU Berlin, Germany
Resonant soft-X-ray scattering methods provide unique possibilities to study nanometer-scale magnetization states with element selectivity. Employing ultrashort pulsed X-ray sources accesses the laser-induced dynamics on ultrafast timescales beyond a spatially-averaged insight. Based on a laser-driven plasma X-ray source, we have developed a novel instrument to carry out time-resolved magnetic small-angle X-ray scattering (SAXS) experiments in the soft-X-ray range between 500 and 1500 eV with sub-10 ps temporal resolution. Due to the flexibility of our laboratory-scale setup, we can further vary the sample environment, e.g., by applying external magnetic fields as well as cryogenic temperatures, and hence investigate ground-state-dependent dynamics of emergent textures such as magnetic domains. Specifically, we aim at following laser-driven dynamics of spatially heterogenous phase transitions, e.g. during the prototypical magneto-structural antiferromagnetic (AFM) to ferromagnetic (FM) transition in FeRh. Here, resonant magnetic SAXS can resolve the relevant time and length scales on which FM domains emerge during this first-order transition.
Keywords: soft-X-ray scattering; ultrafast dynamics; hybrid X-ray detector; magnetic domains; phase transitions