Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 55: Skyrmions III
MA 55.12: Talk
Friday, March 13, 2026, 12:30–12:45, HSZ/0004
Volume effect in Gd-containing skyrmion compounds — •Mathias Doerr1, Justus Grumbach1, and Maximilian Hirschberger2 — 1Technische Universität Dresden, Germany. — 2University of Tokyo and RIKEN Center for Emergent Matter Science, Japan.
Skyrmions with a smaller characteristic wavelength are currently investigated in centrosymmetric compounds. The interplay between skyrmion lattices (SkL) and underlying crystallographic structures offers the possibility to determine the stability region of skyrmions by dilatometric measurements (thermal expansion and forced magnetostriction). Magnetostriction measurements on the two hexagonal metallic compounds Gd3Ru4Al12 with a planar breathing kagome lattice and the triangular lattice magnet Gd2PdSi3 show a volume change (plateau phase) in the stability region of the skyrmion lattice, indicating the need for an unstrengthened crystal lattice for the formation of skyrmions. Another important result of our investigations was the refinement of the H-T phase diagrams for both investigated materials. The key results of the measurements were verified using a mean field calculation (see talk by J. Grumbach).
Keywords: Skyrmion; Rare-earth compounds; Magnetostriction