Bistability of magnetic skyrmions in a multilayer ferromagnetic/heavy metal structure

The effect of the Dzyaloshinskii–Moriya interface interaction on the stability of magnetic skyrmions in the ferromagnet-heavy metal multilayer structure depending on the number of multilayer repetitions was investigated by micromagnetic modeling. The parameters of the multilayer structure for the stabilization of magnetic skyrmions in nanodisks formed by Ir/Co/Pt layers are selected. It is shown how the value of the Dzialoszynskii–Moriya exchange interaction affects the type, stability, and radius of magnetic skyrmions in multilayer nanopillars. The results obtained can be used to create devices for processing and storage information signals.