2026-04-23T00:22:14Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/806762025-12-16T20:00:43Zcom_10324_1148com_10324_931com_10324_894col_10324_1270

Novel interpretation of recent experiments on the dynamics of domain walls along ferrimagnetic strips Martínez, Eduardo Raposo, Víctor Alejos, Óscar Domain wall motion along ferrimagnets is evaluated using micromagnetic simulations and a collective-coordinates model, both considering two sublattices with independent parameters. Analytical expressions are derived for strips on top of either a heavy metal or a substrate with negligible interfacial Dzyaloshinskii-Moriya Interaction. The work focuses its findings in this latter case, with a field-driven domain wall motion depicting precessional dynamics which become rigid at the angular momentum compensation temperature, and a current-driven dynamics presenting more complex behavior, depending on the polarization factors for each sublattice. Importantly, our analyses provide also novel interpretation of recent evidence on current-driven domain wall motion, where walls move either along or against the current depending on temperature. Besides, our approach is able to substantiate the large non-adiabatic effective parameters found for these systems. 2025-12-16T13:14:06Z 2025-12-16T13:14:06Z 2020 info:eu-repo/semantics/article Eduardo Martínez et al 2020 J. Phys.: Condens. Matter 32 465803 0953-8984 https://uvadoc.uva.es/handle/10324/80676 10.1088/1361-648X/aba7eb 465803 46 Journal of Physics: Condensed Matter 32 1361-648X spa info:eu-repo/semantics/openAccess SI