Spin canting induced large nonreciprocal Goos-Hänchen shifts

Macêdo, R. , Stamps, R. L. and Dumelow, T. (2014) Spin canting induced large nonreciprocal Goos-Hänchen shifts. Optics Express, 22(23), pp. 28467-28478. (doi:10.1364/OE.22.028467)

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Abstract

Recent studies on surface reflection illustrate how light beams can be laterally shifted from the position predicted by geometrical optics, the so called Goos-Hänchen effect. In antiferromagnets this shifts can be controlled with an external magnetic field. We show that a configuration in which spins cant in response to applied magnetic fields enhance possibilities of field controlled shifts. Moreover, we show that nonreciprocal displacements are possible, for both oblique and normal incidence, due to inherent nonreciprocity of the polariton phase with respect to the propagation direction. In the absence of an external field, reciprocal displacements occur.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Stamps, Professor Robert and Macedo, Dr Rair
Authors: Macêdo, R., Stamps, R. L., and Dumelow, T.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:Optical Society of America
ISSN:1094-4087
Copyright Holders:Copyright © 2014 Optical Society of America
First Published:First published in Optics Express 22(23):28467-28478
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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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