Spin-wave eigenmodes of Dzyaloshinskii domain walls

Borys, P., Garcia-Sanchez, F., Kim, J.-V. and Stamps, R. L. (2016) Spin-wave eigenmodes of Dzyaloshinskii domain walls. Advanced Electronic Materials, 2(1), 1500202. (doi:10.1002/aelm.201500202)

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Abstract

A theory for the spin-wave eigenmodes of a Dzyaloshinskii domain wall is presented. These walls are Néel-type domain walls that can appear in perpendicularly magnetized ultrathin ferromagnets in the presence of a sizeable Dzyaloshinskii–Moriya interaction. The mode frequencies for spin waves propagating perpendicular to the domain wall plane are computed using a continuum approximation. In contrast to Bloch-type walls, it is found that the spin wave potential associated with Dzyaloshinskii domain walls is not reflectionless, which leads to a finite scattering cross-section for interactions between spin waves and domain walls. A gap produced by the Dzyaloshinskii interaction emerges and band structures arising from periodic wall arrays are discussed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Stamps, Professor Robert and Borys, Mr Pablo
Authors: Borys, P., Garcia-Sanchez, F., Kim, J.-V., and Stamps, R. L.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Advanced Electronic Materials
Publisher:Wiley
ISSN:2199-160X
ISSN (Online):2199-160X
Published Online:16 December 2015
Copyright Holders:Copyright © 2015 Wiley-VHC Verlag GmbH and Co.
First Published:First published in Advanced Electronic Materials 2(1): 1500202
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
683531Consortium for advanced materials based on spin chiralityRobert StampsEngineering & Physical Sciences Research Council (EPSRC)EP/M024423/1S&E P&A - PHYSICS & ASTRONOMY