Micromagnetic study of Skyrmion and Antiskyrmion stability

Skyrmions (Sk) are chiral nanoscale topological magnetic solitons. Sk are stabilized by the Dzyaloshinskii-Moriya interaction (DMI) [1-2] or by dipolar interactions. Antiskyrmions (ASk) can be stabilized when an anisotropic DMI with opposite sign along perpendicular directions (Dx = −Dy) is present [3-4]. Sk and ASk show a different distribution of dipolar volume charges (Fig. 1). Therefore, when the dipolar interaction is comparable with the other energies, significant differences in energy and stability between Sk and ASk are predicted [5].