Forming individual magnetic biskyrmions by merging two skyrmions in a centrosymmetric nanodisk

Börge Göbel, Jürgen Henk, Ingrid Mertig

When two magnetic skyrmions - whirl-like, topologically protected quasiparticles - form a bound pair, a biskyrmion state with a topological charge of $N_{\mathrm{Sk}}=\pm 2$ is const…