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| 001 | 1018431 | ||
| 005 | 20240403082800.0 | ||
| 024 | 7 | _ | |a 10.1038/s41586-023-06658-5 |2 doi |
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| 082 | _ | _ | |a 500 |
| 100 | 1 | _ | |a Zheng, Fengshan |0 P:(DE-Juel1)165965 |b 0 |e Corresponding author |u fzj |
| 245 | _ | _ | |a Hopfion rings in a cubic chiral magnet |
| 260 | _ | _ | |a London [u.a.] |c 2023 |b Nature Publ. Group |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Magnetic skyrmions and hopfions are topological solitons1—well-localized field configurations that have gained considerable attention over the past decade owing to their unique particle-like properties, which make them promising objects for spintronic applications. Skyrmions2,3 are two-dimensional solitons resembling vortex-like string structures that can penetrate an entire sample. Hopfions4,5,6,7,8,9 are three-dimensional solitons confined within a magnetic sample volume and can be considered as closed twisted skyrmion strings that take the shape of a ring in the simplest case. Despite extensive research on magnetic skyrmions, the direct observation of magnetic hopfions is challenging10 and has only been reported in a synthetic material11. Here we present direct observations of hopfions in crystals. In our experiment, we use transmission electron microscopy to observe hopfions forming coupled states with skyrmion strings in B20-type FeGe plates. We provide a protocol for nucleating such hopfion rings, which we verify using Lorentz imaging and electron holography. Our results are highly reproducible and in full agreement with micromagnetic simulations. We provide a unified skyrmion–hopfion homotopy classification and offer insight into the diversity of topological solitons in three-dimensional chiral magnets. |
| 536 | _ | _ | |a 5211 - Topological Matter (POF4-521) |0 G:(DE-HGF)POF4-5211 |c POF4-521 |f POF IV |x 0 |
| 536 | _ | _ | |a 3D MAGiC - Three-dimensional magnetization textures: Discovery and control on the nanoscale (856538) |0 G:(EU-Grant)856538 |c 856538 |f ERC-2019-SyG |x 1 |
| 536 | _ | _ | |a DFG project 403503315 - Grenzflächenstabilisierte Skyrmionen in Oxidstrukturen für die Skyrmionik (403503315) |0 G:(GEPRIS)403503315 |c 403503315 |x 2 |
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| 700 | 1 | _ | |a Kiselev, Nikolai S. |0 P:(DE-Juel1)145390 |b 1 |e Corresponding author |
| 700 | 1 | _ | |a Rybakov, Filipp N. |0 P:(DE-HGF)0 |b 2 |e Corresponding author |
| 700 | 1 | _ | |a Yang, Luyan |0 P:(DE-HGF)0 |b 3 |
| 700 | 1 | _ | |a Shi, Wen |0 P:(DE-Juel1)195974 |b 4 |u fzj |
| 700 | 1 | _ | |a Blügel, Stefan |0 P:(DE-Juel1)130548 |b 5 |
| 700 | 1 | _ | |a Dunin-Borkowski, Rafal E. |0 P:(DE-Juel1)144121 |b 6 |
| 773 | _ | _ | |a 10.1038/s41586-023-06658-5 |g Vol. 623, no. 7988, p. 718 - 723 |0 PERI:(DE-600)1413423-8 |n 7988 |p 718 - 723 |t Nature |v 623 |y 2023 |x 0028-0836 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/1018431/files/s41586-023-06658-5.pdf |y OpenAccess |
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