Oriented 3D Magnetic Biskyrmions in MnNiGa Bulk Crystals

Oriented 3D Magnetic Biskyrmions in MnNiGa Bulk Crystals

© 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 17 vom: 19. Apr., Seite e1900264
1. Verfasser: Li, Xiyang (VerfasserIn)
Weitere Verfasser: Zhang, Shilei, Li, Hang, Venero, Diego Alba, White, Jonathan S, Cubitt, Robert, Huang, Qingzhen, Chen, Jie, He, Lunhua, van der Laan, Gerrit, Wang, Wenhong, Hesjedal, Thorsten, Wang, Fangwei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article MnNiGa biskyrmions disorder small-angle neutron scattering
Beschreibung
Zusammenfassung:© 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
A biskyrmion consists of two bound, topologically stable, skyrmion spin textures. These coffee-bean-shaped objects are observed in real space in thin plates using Lorentz transmission electron microscopy (LTEM). From LTEM imaging alone, it is not clear whether biskyrmions are surface-confined objects, or, analogous to skyrmions in noncentrosymmetric helimagnets, 3D tube-like structures in a bulk sample. Here, the biskyrmion form factor is investigated in single- and polycrystalline-MnNiGa samples using small-angle neutron scattering. It is found that biskyrmions are not long-range ordered, not even in single crystals. Surprisingly all of the disordered biskyrmions have their in-plane symmetry axis aligned along certain directions, governed by the magnetocrystalline anisotropy. This anisotropic nature of biskyrmions may be further exploited to encode information
Beschreibung:Date Revised 30.07.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.201900264