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MA: Fachverband Magnetismus

MA 30: PhD Focus Session: Non-equilibrium dynamics in theory and experiment

MA 30.4: Hauptvortrag

Mittwoch, 29. März 2023, 16:45–17:15, HSZ 02

Probing ultrafast magnetization thanks to ultrashort soft X-ray pulses — •Emmanuelle Jal — Sorbonne Université, CNRS, Laboratoire de Chimie Physique - Matière et Rayonnement, LCPMR, Paris 75005, France

Even after more than 25 years of studies and debates, the mechanisms of ultrafast demagnetization remain disputed. In order to bring new experimental information into this field, and with the advent of femtosecond X-rays sources, new time-resolved XUV and soft X-ray-based pump/probe techniques are performed on magnetic thin films. During this talk, I will give an overview of what can be done with XUV and soft x-ray short pulses to probe electronic, magnetic, and structural dynamics. A special emphasis will be given to (i) simultaneous electronic and magnetism dynamics [1,2] and (ii) simultaneous structural and magnetism dynamics [3, 4,5].

[1] Rösner et al. Struct. Dyn. 7, 054302 (2020)

https://doi.org/10.1063/4.0000033

[2] Hennes et al Appl. Sci. 11m 325 (2021)

https://doi.org/10.3390/app11010325

[3] Jal et al. Phys. Rev. B 95, 184422 (2017)

https://doi.org/10.1103/PhysRevB.95.184422

[4] Chardonnet et al. Struct. Dyn. 8, 034305 (2021)

https://doi.org/10.1063/4.0000109

[5] V. Chardonnet, PhD 2022

https://tel.archives-ouvertes.fr/tel-03864973