Van der Waals ferromagnets, such as Fe5GeTe2, offer a promising platform for spintronic devices based on chiral magnetic
textures, provided a significant Dzyaloshinskii−Moriya interaction (DMI) can be induced to stabilize the textures. Here, we directly
measure DMI in epitaxial Fe5GeTe2 thin films using Brillouin light scattering spectroscopy and observe a consistent DMI (D = 0.04 mJ/m2) across various thicknesses. Its weak thickness dependence, combined with the nominally symmetric film interfaces, suggests a bulk origin. this makes Fe5GeTe2 a strong candidate for exploring the dynamics of chiral magnetic textures in two-dimensional materials.
Reference:
Dzyaloshinskii−Moriya Interaction in Fe5GeTe2 Epitaxial Thin Films
João Sampaio,* Antoine Pascaud, Edgar Quero, André Thiaville, Vincent Polewczyk, Alain Marty, Frédéric Bonell, and Alexandra Mougin
https://doi.org/10.1021/acs.nanolett.5c03547