Topology-dependent stability of vortex-antivortex structures

The non-trivial topology of magnetic structures such as vortices and skyrmions is considered a key concept to explain the stability those structures. stability, dictated by topology, provides great potential for device applications. Although it very critical scientific technological issue, elusive experimentally study topology-dependent owing difficulties in establishing stably formed with different topologies. Here, we establish platform vortex-antivortex topological charges within Ni80Fe20 rectangular elements thick enough stabilize unique three-dimensional structure non-uniform magnetization along thickness elements. detailed configurations their annihilations during field-driven motions are investigated utilizing transmission soft x-ray microscopy micromagnetic simulation. We demonstrate that significantly depends on topologies associated annihilation mechanisms. believe this work in-depth insight into its dependence.