Sewing skyrmion and antiskyrmion by quadrupole of Bloch points
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909067415388160 |
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| author | Tang, Jin Wu, Yaodong Jiang, Jialiang Kong, Lingyao Liu, Wei Wang, Shouguo Tian, Mingliang Du, Haifeng |
| author_facet | Tang, Jin Wu, Yaodong Jiang, Jialiang Kong, Lingyao Liu, Wei Wang, Shouguo Tian, Mingliang Du, Haifeng |
| contents | We report three-dimensional topological spin configurations including a novel form of skyrmion-antiskyrmion coupling in D2d chiral magnets. The skyrmion-antiskyrmion coupled string, consisting of skyrmions located in the near-surface layers and antiskyrmions in the interior of the nanostructured sample that are sewn together by emergent Bloch points, is a hybrid three-dimensional soliton solution resulting from the application of micromagnetic equations. We further provide experimental evidence of these 3D topological skyrmionic strings in a FeNiPdP chiral magnet with S4 symmetry. Our results demonstrate reversible topological magnetic transformations between skyrmion-antiskyrmion and skyrmion-bubble strings, which are mediated by the creation and annihilation of Bloch points. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_17422 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Sewing skyrmion and antiskyrmion by quadrupole of Bloch points Tang, Jin Wu, Yaodong Jiang, Jialiang Kong, Lingyao Liu, Wei Wang, Shouguo Tian, Mingliang Du, Haifeng Materials Science We report three-dimensional topological spin configurations including a novel form of skyrmion-antiskyrmion coupling in D2d chiral magnets. The skyrmion-antiskyrmion coupled string, consisting of skyrmions located in the near-surface layers and antiskyrmions in the interior of the nanostructured sample that are sewn together by emergent Bloch points, is a hybrid three-dimensional soliton solution resulting from the application of micromagnetic equations. We further provide experimental evidence of these 3D topological skyrmionic strings in a FeNiPdP chiral magnet with S4 symmetry. Our results demonstrate reversible topological magnetic transformations between skyrmion-antiskyrmion and skyrmion-bubble strings, which are mediated by the creation and annihilation of Bloch points. |
| title | Sewing skyrmion and antiskyrmion by quadrupole of Bloch points |
| topic | Materials Science |
| url | https://arxiv.org/abs/2311.17422 |