Using magnetic hyperbolic metamaterials as high frequency tunable filters

Macêdo, R. , Livesey, K. L. and Camley, R. E. (2018) Using magnetic hyperbolic metamaterials as high frequency tunable filters. Applied Physics Letters, 113(12), 121104. (doi:10.1063/1.5049602)

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Metamaterials have enabled a series of major advances in optical devices in the past decade. Here, we suggest a type of hyperbolic metamaterial based on spin canting in magnetic multi-layers. We show that these structures have unique features in microwave waveguides that act as tunable filters. In the resulting band pass filter, we demonstrate an exceptional frequency tunability of 30 GHz with external fields smaller than 500 Oe. Unlike single metallic ferromagnetic films, we also demonstrate a high-frequency band-stop filter at very low fields.

Item Type:Articles
Additional Information:The work of R. Macedo was financially supported by the Leverhulme Trust, LKAS and SUPA.
Glasgow Author(s) Enlighten ID:Macedo, Dr Rair
Authors: Macêdo, R., Livesey, K. L., and Camley, R. E.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Applied Physics Letters
Publisher:AIP Publishing
ISSN (Online):1077-3118
Published Online:18 September 2018
Copyright Holders:Copyright © 2018 AIP Publishing
First Published:First published in Applied Physics Letters 113(12):121104
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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