Control and regulation of skyrmionic topological charge in a novel synthetic antiferromagnetic nanostructure

Phase diagrams of single skyrmionium moving in a nanostructure with (a) J ex = 0 J m −2 and (b) J ex = −5 × 10 −6 J m −2 , which provides the means for skyrmion–skyrmionium hybrid application and neuromorphic computing applications (c).