Journal Article

FZJ-2024-05263

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Embedded Skyrmion Bags in Thin Films of Chiral Magnets

Yang, L.FZJ* ; Savchenko, A. (Corresponding author)FZJ* ; Zheng, F. (Corresponding author) ; Kiselev, N. (Corresponding author)FZJ* ; Rybakov, F. N. ; Han, X. ; Blügel, S.FZJ* ; Dunin-Borkowski, R.FZJ*

2024
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/adma.202403274  doi:10.34734/FZJ-2024-05263

Abstract: Magnetic skyrmions are topologically nontrivial spin configurations that possess particle-like properties. Earlier research has mainly focused on a specific type of skyrmion with topological charge Q = −1. However, theoretical analyses of 2D 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, the extraordinary stability of skyrmion bags in thin plates of B20-type FeGe is shown. In particular, it is shown 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. The 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.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (PGI-1)
2. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 5221 - Advanced Solid-State Qubits and Qubit Systems (POF4-522) (POF4-522)
2. 3D MAGiC - Three-dimensional magnetization textures: Discovery and control on the nanoscale (856538) (856538)
3. DFG project G:(GEPRIS)403502830 - Hybride dreidimensionale Solitonen für Anwendungen (403502830) (403502830)
4. DFG project G:(GEPRIS)403503315 - Grenzflächenstabilisierte Skyrmionen in Oxidstrukturen für die Skyrmionik (403503315) (403503315)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Essential Science Indicators ; IF >= 25 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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