Brillouin light scattering study of magnetic-element normal modes in a square artificial spin ice geometry

Li, Y., Gubbiotti, G., Casoli, F., Goncalves, F., Morley, S., Rosamond, M., Linfield, E., Marrows, C., McVitie, S. and Stamps, R. (2017) Brillouin light scattering study of magnetic-element normal modes in a square artificial spin ice geometry. Journal of Physics D: Applied Physics, 50(1), 015003. (doi:10.1088/1361-6463/50/1/015003)

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Abstract

We report the results, from experimental and micromagnetic studies, of the magnetic normal modes in artificial square spin ice systems consisting of ferromagnetic-monodomain islands. Spin-wave properties are measured by Brillouin light scattering. The mode spectra contain several branches whose frequencies are sensitive to the magnitude and in-plane orientation of an applied magnetic field. We also identify soft modes that exhibit different behaviours depending on the direction of the applied magnetic field. The obtained results are well described with micromagnetic simulations of independent magnetic elements arranged along two sublattices.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Li, Miss Yue and McVitie, Professor Stephen and Stamps, Professor Robert
Authors: Li, Y., Gubbiotti, G., Casoli, F., Goncalves, F., Morley, S., Rosamond, M., Linfield, E., Marrows, C., McVitie, S., and Stamps, R.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Physics D: Applied Physics
Publisher:IOP Publishing
ISSN:0022-3727
ISSN (Online):1361-6463
Published Online:23 November 2016
Copyright Holders:Copyright © 2017 IOP Publishing Ltd
First Published:First published in Journal of Physics D: Applied Physics 50(1):015003
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5525/gla.researchdata.358

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
629961Artificial spin ice: designer matter far from equilibriumRobert StampsEngineering & Physical Sciences Research Council (EPSRC)EP/L002922/1S&E P&A - PHYSICS & ASTRONOMY