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Driving magnetic skyrmions with microwave fields

Driving magnetic skyrmions with microwave fields
Driving magnetic skyrmions with microwave fields
We show theoretically by numerically solving the Landau-Lifshitz-Gilbert equation with a classical spin model on a two-dimensional system that both magnetic skyrmions and skyrmion lattices can be moved with microwave magnetic fields. The mechanism is enabled by breaking the axial symmetry of the skyrmion, for example, through application of a static in-plane external field. The net velocity of the skyrmion depends on the frequency and amplitude of the microwave fields as well as the strength of the in-plane field. The maximum velocity is found where the frequency of the microwave coincides with the resonance frequency of the breathing mode of the skyrmions
1550-235X
Wang, Weiwei
42981e5f-b7ee-44f7-a64d-d47ab0cacbce
Zhang, Bin
845a7672-e33d-4a3a-a177-b8a15190aa63
Kuch, Wolfgang
4f4d472c-69d1-4c65-b650-53944801ec85
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160
Wang, Weiwei
42981e5f-b7ee-44f7-a64d-d47ab0cacbce
Zhang, Bin
845a7672-e33d-4a3a-a177-b8a15190aa63
Kuch, Wolfgang
4f4d472c-69d1-4c65-b650-53944801ec85
Fangohr, Hans
9b7cfab9-d5dc-45dc-947c-2eba5c81a160

Wang, Weiwei, Zhang, Bin, Kuch, Wolfgang and Fangohr, Hans (2015) Driving magnetic skyrmions with microwave fields. Physical Review B, 92 (2). (doi:10.1103/PhysRevB.92.020403).

Record type: Article

Abstract

We show theoretically by numerically solving the Landau-Lifshitz-Gilbert equation with a classical spin model on a two-dimensional system that both magnetic skyrmions and skyrmion lattices can be moved with microwave magnetic fields. The mechanism is enabled by breaking the axial symmetry of the skyrmion, for example, through application of a static in-plane external field. The net velocity of the skyrmion depends on the frequency and amplitude of the microwave fields as well as the strength of the in-plane field. The maximum velocity is found where the frequency of the microwave coincides with the resonance frequency of the breathing mode of the skyrmions

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More information

Published date: 8 July 2015
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 381805
URI: https://eprints.soton.ac.uk/id/eprint/381805
ISSN: 1550-235X
PURE UUID: ea51e9dd-6656-4696-945d-6d451c74b299

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Date deposited: 16 Oct 2015 07:59
Last modified: 29 Nov 2018 17:31

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