Embedded skyrmion bags in thin films of chiral magnets
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914884474634240 |
|---|---|
| author | Yang, Luyan Savchenko, Andrii S. Zheng, Fengshan Kiselev, Nikolai S. Rybakov, Filipp N. Han, Xiaodong Blügel, Stefan Dunin-Borkowski, Rafal E. |
| author_facet | Yang, Luyan Savchenko, Andrii S. Zheng, Fengshan Kiselev, Nikolai S. Rybakov, Filipp N. Han, Xiaodong Blügel, Stefan Dunin-Borkowski, Rafal E. |
| contents | Magnetic skyrmions are topologically nontrivial spin configurations that possess particle-like properties. Earlier research was mainly focused on a specific type of skyrmion with topological charge Q = -1. However, theoretical analyses of two-dimensional chiral magnets have predicted the existence of skyrmion bags -- solitons with arbitrary positive or negative topological charge. Although such spin textures are metastable states, recent experimental observations have confirmed the stability of isolated skyrmion bags in a limited range of applied magnetic fields. Here, by utilizing Lorentz transmission electron microscopy, we show the extraordinary stability of skyrmion bags in thin plates of B20-type FeGe. In particular, we show that skyrmion bags embedded within a skyrmion lattice remain stable even in zero or inverted external magnetic fields. A robust protocol for nucleating such embedded skyrmion bags is provided. Our results agree perfectly with micromagnetic simulations and establish thin plates of cubic chiral magnets as a powerful platform for exploring a broad spectrum of topological magnetic solitons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_16931 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Embedded skyrmion bags in thin films of chiral magnets Yang, Luyan Savchenko, Andrii S. Zheng, Fengshan Kiselev, Nikolai S. Rybakov, Filipp N. Han, Xiaodong Blügel, Stefan Dunin-Borkowski, Rafal E. Mesoscale and Nanoscale Physics Materials Science Other Condensed Matter Strongly Correlated Electrons Magnetic skyrmions are topologically nontrivial spin configurations that possess particle-like properties. Earlier research was mainly focused on a specific type of skyrmion with topological charge Q = -1. However, theoretical analyses of two-dimensional chiral magnets have predicted the existence of skyrmion bags -- solitons with arbitrary positive or negative topological charge. Although such spin textures are metastable states, recent experimental observations have confirmed the stability of isolated skyrmion bags in a limited range of applied magnetic fields. Here, by utilizing Lorentz transmission electron microscopy, we show the extraordinary stability of skyrmion bags in thin plates of B20-type FeGe. In particular, we show that skyrmion bags embedded within a skyrmion lattice remain stable even in zero or inverted external magnetic fields. A robust protocol for nucleating such embedded skyrmion bags is provided. Our results agree perfectly with micromagnetic simulations and establish thin plates of cubic chiral magnets as a powerful platform for exploring a broad spectrum of topological magnetic solitons. |
| title | Embedded skyrmion bags in thin films of chiral magnets |
| topic | Mesoscale and Nanoscale Physics Materials Science Other Condensed Matter Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2403.16931 |