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Skyrmion states in thin confined polygonal nanostructures

Skyrmion states in thin confined polygonal nanostructures
Skyrmion states in thin confined polygonal nanostructures

Recent studies have demonstrated that skyrmionic states can be the ground state in thin-film FeGe disk nanostructures in the absence of a stabilising applied magnetic field. In this work, we advance this understanding by investigating to what extent this stabilisation of skyrmionic structures through confinement exists in geometries that do not match the cylindrical symmetry of the skyrmion - such as squares and triangles. Using simulation, we show that skyrmionic states can form the ground state for a range of system sizes in both triangular and square-shaped FeGe nanostructures of 10 nm thickness in the absence of an applied field. We further provide data to assist in the experimental verification of our prediction; to imitate an experiment where the system is saturated with a strong applied field before the field is removed, we compute the time evolution and show the final equilibrium configuration of magnetization fields, starting from a uniform alignment.

0021-8979
1-7
Pepper, Ryan Alexander
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Beg, Marijan
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Cortés-Ortuño, David
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Kluyver, Thomas
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Bisotti, Marc Antonio
be2d7abd-afdc-4d18-a2e9-a633d73a67b9
Carey, Rebecca
fc5ef402-befe-4fff-ad14-c192eed54f36
Vousden, Mark
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Albert, Maximilian
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Wang, Weiwei
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Hovorka, Ondrej
a12bd550-ad45-4963-aa26-dd81dd1609ee
Fangohr, Hans
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Pepper, Ryan Alexander
82ef34fc-7e93-4f98-8f85-ff0e5113ed17
Beg, Marijan
5c7cc1ff-f244-471f-b964-9f24e0628153
Cortés-Ortuño, David
97d026d6-1083-4edf-8ba6-2f66a3e15033
Kluyver, Thomas
d3bd4245-1a99-4268-b34f-8f9f0153465e
Bisotti, Marc Antonio
be2d7abd-afdc-4d18-a2e9-a633d73a67b9
Carey, Rebecca
fc5ef402-befe-4fff-ad14-c192eed54f36
Vousden, Mark
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Albert, Maximilian
a8049610-1e98-4cfb-b59a-177645a42b47
Wang, Weiwei
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Hovorka, Ondrej
a12bd550-ad45-4963-aa26-dd81dd1609ee
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160

Pepper, Ryan Alexander, Beg, Marijan, Cortés-Ortuño, David, Kluyver, Thomas, Bisotti, Marc Antonio, Carey, Rebecca, Vousden, Mark, Albert, Maximilian, Wang, Weiwei, Hovorka, Ondrej and Fangohr, Hans (2018) Skyrmion states in thin confined polygonal nanostructures. Journal of Applied Physics, 123 (9), 1-7. (doi:10.1063/1.5022567).

Record type: Article

Abstract

Recent studies have demonstrated that skyrmionic states can be the ground state in thin-film FeGe disk nanostructures in the absence of a stabilising applied magnetic field. In this work, we advance this understanding by investigating to what extent this stabilisation of skyrmionic structures through confinement exists in geometries that do not match the cylindrical symmetry of the skyrmion - such as squares and triangles. Using simulation, we show that skyrmionic states can form the ground state for a range of system sizes in both triangular and square-shaped FeGe nanostructures of 10 nm thickness in the absence of an applied field. We further provide data to assist in the experimental verification of our prediction; to imitate an experiment where the system is saturated with a strong applied field before the field is removed, we compute the time evolution and show the final equilibrium configuration of magnetization fields, starting from a uniform alignment.

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Accepted/In Press date: 14 February 2018
e-pub ahead of print date: 5 March 2018
Published date: 7 March 2018

Identifiers

Local EPrints ID: 419711
URI: https://eprints.soton.ac.uk/id/eprint/419711
ISSN: 0021-8979
PURE UUID: 941e5d11-78b0-4a20-91d4-84bdef874ca0
ORCID for Marijan Beg: ORCID iD orcid.org/0000-0002-6670-3994
ORCID for David Cortés-Ortuño: ORCID iD orcid.org/0000-0003-3799-3141
ORCID for Thomas Kluyver: ORCID iD orcid.org/0000-0003-4020-6364

Catalogue record

Date deposited: 19 Apr 2018 16:30
Last modified: 18 May 2019 00:30

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Contributors

Author: Ryan Alexander Pepper
Author: Marijan Beg ORCID iD
Author: David Cortés-Ortuño ORCID iD
Author: Thomas Kluyver ORCID iD
Author: Marc Antonio Bisotti
Author: Rebecca Carey
Author: Mark Vousden
Author: Maximilian Albert
Author: Weiwei Wang
Author: Ondrej Hovorka
Author: Hans Fangohr

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