Analytical Profiles of Skyrmion Bags

Topologically nontrivial localized 2D magnetic states with high topological charge (| Q | > 1) have attracted significant attention in the last decade, driven by their experimental and numerical discovery. In this work, we propose an analytical ansatz capable of describing both axially symmetric k π-skyrmions and C g -symmetric skyrmion bags, with a straightforward extension to a wide range of other multi-skyrmion textures. By comparing with numerical micromagnetic simulations, we show that the proposed ansatz describes skyrmion bags with accuracy sufficient for practical applications.