Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.10: Poster
Montag, 9. März 2026, 09:30–12:30, P2
Ultrafast Magnetization Dynamics of the self-intercalated vdW ferromagnet CrxTey — •Maximilian Staabs1, Tim Titze1, Pia Henning2, G.S.Matthijs Jansen1, Stefan Mathias1, Jasnamol Palakkal2, and Daniel Steil1 — 1I. Physikalisches Institut, University of Goettingen — 2Institute for materials physics, University of Goettingen
The groundbreaking discovery of ferromagnetic ordering in layered two-dimensional CrTe2 at ambient temperature [1] has sparked the research interest in chromium-tellurides over the last several years, establishing CrxTey as a premier platform for next generation spintronics or skyrmionic devices [2].
While the role of intercalation on the magnetic ordering in a static setting is well understood, its impact on ultrafast dynamics remains unclear.
Here we use time-resolved MOKE and transient reflectivity measurements to identify the role of intercalation on the ultrafast dynamics in thin films of CrTe2 and Cr2Te3 fabricated by hybrid pulsed laser deposition [3]. The pump-probe experiments reveal several significant differences in the ultrafast magnetization dynamics, including the appearance of heavily damped magnon modes at lower temperatures of Cr2Te3, as well as significantly stronger coherent phonon modes in CrTe2.
[1] Freitas et al., J. Phys.: Condens. Matter 27 176002 (2015).
[2] Zhang et al., Adv. Mater. 35, 2205967 (2023).
[3] Henning et al., Preprint 10.21203/rs.3.rs-4861088 (2024).
Keywords: VdW Ferromagnet; Self-intercalation; Thin Films