Bloch points in nanostrips
Bloch points in nanostrips
Complex magnetic materials hosting topologically non-trivial particle-like objects such as skyrmions are under intensive research and could fundamentally change the way we store and process data. One important class of materials are helimagnetic materials with Dzyaloshinskii-Moriya interaction. Recently, it was demonstrated that thin nanodisks consisting of two layers with opposite chirality can host a single stable Bloch point of two different types at the interface between the layers. Using micromagnetic simulations we show that FeGe nanostrips consisting of two layers with opposite chirality can host multiple coexisting Bloch points in an arbitrary combination of the two different types. We show that the number of Bloch points that can simultaneously coexist depends on the strip geometry and the type of the individual Bloch points. Our simulation results allow us to predict strip geometries suitable for an arbitrary number of Bloch points. We show an example of an 80-Bloch-point configuration verifying the prediction.
computational science, magnetic properties and materials
Lang, Martin
4b5ae654-6a58-4c2c-a116-87161fcd533d
Beg, Marijan
5c7cc1ff-f244-471f-b964-9f24e0628153
Hovorka, Ondrej
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Fangohr, Hans
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27 April 2023
Lang, Martin
4b5ae654-6a58-4c2c-a116-87161fcd533d
Beg, Marijan
5c7cc1ff-f244-471f-b964-9f24e0628153
Hovorka, Ondrej
a12bd550-ad45-4963-aa26-dd81dd1609ee
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Lang, Martin, Beg, Marijan, Hovorka, Ondrej and Fangohr, Hans
(2023)
Bloch points in nanostrips.
Scientific Reports, 13 (1), [6910].
(doi:10.1038/s41598-023-33998-z).
Abstract
Complex magnetic materials hosting topologically non-trivial particle-like objects such as skyrmions are under intensive research and could fundamentally change the way we store and process data. One important class of materials are helimagnetic materials with Dzyaloshinskii-Moriya interaction. Recently, it was demonstrated that thin nanodisks consisting of two layers with opposite chirality can host a single stable Bloch point of two different types at the interface between the layers. Using micromagnetic simulations we show that FeGe nanostrips consisting of two layers with opposite chirality can host multiple coexisting Bloch points in an arbitrary combination of the two different types. We show that the number of Bloch points that can simultaneously coexist depends on the strip geometry and the type of the individual Bloch points. Our simulation results allow us to predict strip geometries suitable for an arbitrary number of Bloch points. We show an example of an 80-Bloch-point configuration verifying the prediction.
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s41598-023-33998-z
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Accepted/In Press date: 22 April 2023
e-pub ahead of print date: 27 April 2023
Published date: 27 April 2023
Additional Information:
Funding Information:
This work was financially supported by the EPSRC Programme grant on Skyrmionics (EP/N032128/1). We acknowledge the use of the IRIDIS High Performance Computing Facility, and associated support services at the University of Southampton, and the HPC system at the Max Planck Institute for the Structure and Dynamics of Matter, in the completion of this work.
Funding Information:
This work was financially supported by the EPSRC Programme grant on Skyrmionics (EP/N032128/1). We acknowledge the use of the IRIDIS High Performance Computing Facility, and associated support services at the University of Southampton, and the HPC system at the Max Planck Institute for the Structure and Dynamics of Matter, in the completion of this work.
Publisher Copyright:
© 2023, The Author(s).
Keywords:
computational science, magnetic properties and materials
Identifiers
Local EPrints ID: 477782
URI: http://eprints.soton.ac.uk/id/eprint/477782
ISSN: 2045-2322
PURE UUID: 480bf6f6-c233-4d00-af72-190c9f3d61dd
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Date deposited: 14 Jun 2023 16:42
Last modified: 13 Jun 2024 01:58
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Author:
Martin Lang
Author:
Marijan Beg
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