Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908704932102144 |
|---|---|
| author | Zhang, Yongsen Tang, Jin Wu, Yaodong Shi, Meng Xu, Xitong Wang, Shouguo Tian, Mingliang Du, Haifeng |
| author_facet | Zhang, Yongsen Tang, Jin Wu, Yaodong Shi, Meng Xu, Xitong Wang, Shouguo Tian, Mingliang Du, Haifeng |
| contents | Topological spin textures are characterized by topological magnetic charges, Q, which govern their electromagnetic properties. Recent studies have achieved skyrmion bundles with arbitrary integer values of Q, opening possibilities for exploring topological spintronics based on Q. However, the realization of stable skyrmion bundles in chiral magnets at room temperature and zero magnetic field - the prerequisite for realistic device applications - has remained elusive. Here, through the combination of pulsed currents and reversed magnetic fields, we experimentally achieve skyrmion bundles with different integer Q values - reaching a maximum of 24 at above room temperature and zero magnetic field - in the chiral magnet Co8Zn10Mn2. We demonstrate the field-driven annihilation of high-Q bundles and present a phase diagram as a function of temperature and field. Our experimental findings are consistently corroborated by micromagnetic simulations, which reveal the nature of the skyrmion bundle as that of skyrmion tubes encircled by a fractional Hopfion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10243 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet Zhang, Yongsen Tang, Jin Wu, Yaodong Shi, Meng Xu, Xitong Wang, Shouguo Tian, Mingliang Du, Haifeng Mesoscale and Nanoscale Physics Materials Science Topological spin textures are characterized by topological magnetic charges, Q, which govern their electromagnetic properties. Recent studies have achieved skyrmion bundles with arbitrary integer values of Q, opening possibilities for exploring topological spintronics based on Q. However, the realization of stable skyrmion bundles in chiral magnets at room temperature and zero magnetic field - the prerequisite for realistic device applications - has remained elusive. Here, through the combination of pulsed currents and reversed magnetic fields, we experimentally achieve skyrmion bundles with different integer Q values - reaching a maximum of 24 at above room temperature and zero magnetic field - in the chiral magnet Co8Zn10Mn2. We demonstrate the field-driven annihilation of high-Q bundles and present a phase diagram as a function of temperature and field. Our experimental findings are consistently corroborated by micromagnetic simulations, which reveal the nature of the skyrmion bundle as that of skyrmion tubes encircled by a fractional Hopfion. |
| title | Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2512.10243 |