Skyrmions in thin films with easy-plane magnetocrystalline anisotropy
Skyrmions in thin films with easy-plane magnetocrystalline anisotropy
We demonstrate that chiral skyrmionic magnetization configurations can be found as the minimum energy state in B20 thin filmmaterials with easy-plane magnetocrystalline anisotropy with an applied magnetic field perpendicular to the film plane. Our observations contradict results from prior analytical work, but are compatible with recent experimental investigations. The size of the observed skyrmions increase with the easy-plane magnetocrystalline anisotropy. We use a full micromagnetic model including demagnetization and a three-dimensional geometry to find local energy minimum (metastable) magnetization configurations using numerical damped time integration. We explore the phase space of the system and start simulations from a variety of initial magnetization configurations to present a systematic overview of anisotropy and magnetic field parameters for which skyrmions are metastable and global energy minimum (stable) states.
1-4
Vousden, Mark
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Albert, Maximilian
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Beg, Marijan
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Bisotti, Marc-Antonio
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Carey, Rebecca
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Chernyshenko, Dmitri
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Cortes, David
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Wang, Weiwei
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Hovorka, Ondrej
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Marrows, Christopher H.
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Fangohr, Hans
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March 2018
Vousden, Mark
d45312dd-a46f-4376-89f4-38b1ac8957c9
Albert, Maximilian
a8049610-1e98-4cfb-b59a-177645a42b47
Beg, Marijan
5c7cc1ff-f244-471f-b964-9f24e0628153
Bisotti, Marc-Antonio
be2d7abd-afdc-4d18-a2e9-a633d73a67b9
Carey, Rebecca
fc5ef402-befe-4fff-ad14-c192eed54f36
Chernyshenko, Dmitri
62dad926-c42a-43db-9312-2cacbd53a042
Cortes, David
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Wang, Weiwei
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Hovorka, Ondrej
a12bd550-ad45-4963-aa26-dd81dd1609ee
Marrows, Christopher H.
412a62c5-225d-444b-8267-5340480591fd
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Vousden, Mark, Albert, Maximilian, Beg, Marijan, Bisotti, Marc-Antonio, Carey, Rebecca, Chernyshenko, Dmitri, Cortes, David, Wang, Weiwei, Hovorka, Ondrej, Marrows, Christopher H. and Fangohr, Hans
(2018)
Skyrmions in thin films with easy-plane magnetocrystalline anisotropy.
Applied Physics Letters, 108 (13), .
(doi:10.1063/1.4945262).
Abstract
We demonstrate that chiral skyrmionic magnetization configurations can be found as the minimum energy state in B20 thin filmmaterials with easy-plane magnetocrystalline anisotropy with an applied magnetic field perpendicular to the film plane. Our observations contradict results from prior analytical work, but are compatible with recent experimental investigations. The size of the observed skyrmions increase with the easy-plane magnetocrystalline anisotropy. We use a full micromagnetic model including demagnetization and a three-dimensional geometry to find local energy minimum (metastable) magnetization configurations using numerical damped time integration. We explore the phase space of the system and start simulations from a variety of initial magnetization configurations to present a systematic overview of anisotropy and magnetic field parameters for which skyrmions are metastable and global energy minimum (stable) states.
More information
Accepted/In Press date: 21 March 2016
e-pub ahead of print date: 30 March 2016
Published date: March 2018
Organisations:
Computational Engineering & Design Group
Identifiers
Local EPrints ID: 391925
URI: http://eprints.soton.ac.uk/id/eprint/391925
ISSN: 0003-6951
PURE UUID: 570a5c1c-c342-4471-953b-1c056e818031
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Date deposited: 13 Apr 2016 13:10
Last modified: 15 Mar 2024 03:50
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Contributors
Author:
Mark Vousden
Author:
Maximilian Albert
Author:
Marijan Beg
Author:
Marc-Antonio Bisotti
Author:
Rebecca Carey
Author:
Dmitri Chernyshenko
Author:
David Cortes
Author:
Weiwei Wang
Author:
Christopher H. Marrows
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