Formation of magnetic biskyrmions mediated by an intrinsic emergent monopole-antimonopole pair
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资源简介：
Various properties and potential technological applications of magnetic skyrmions have stimulated a flourishing interest in
topological spin textures. Among them, biskyrmions with a rare topological charge of two are observed but their existence is still
under debate. In this work, we present the formation of biskyrmion bubbles mediated by emergent monopoles via micromagnetic
simulations. We find that biskyrmion bubbles and trivial bubbles share a unified three-dimensional structure, in which the relative
position of an intrinsic emergent monopole-antimonopole pair dominates the two-dimensional topological property at the middle
plane of magnetic uniaxial films. Biskyrmion bubbles can be transformed from trivial bubbles by the motion of emergent
monopoles in confined geometry, paving the way for developing devices. These results highlight the three-dimensional aspect of
skyrmion-related nanostructures and the versatile roles of emergent monopoles in topological spin textures.
提供机构：
中国科学技术大学
创建时间：
2023-05-31
