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Giant magnetic modulation of a planar, hybrid metamolecule resonance

Giant magnetic modulation of a planar, hybrid metamolecule resonance
Giant magnetic modulation of a planar, hybrid metamolecule resonance
Coupling magnetic elements to metamaterial structures creates hybrid metamolecules with new opportunities. Here we report on the magnetic control of a metamolecule resonance, by utilizing the interaction between a single split ring resonator (SRR) and a magnetic thin film of permalloy. To suppress eddy current shielding, the permalloy films are patterned into arrays of 30–500 µm diameter discs. Strong hybridized resonances were observed at the anticrossing between the split ring resonance and the ferromagnetic resonance (FMR) of the permalloy. In particular, it is possible to achieve 40 dB modulation of the electric (symmetric) mode of the SRR on sweeping the applied magnetic field through the SRR/FMR anticrossing. The results open the way to the design of planar metamaterials, with potential applications in nonlinear metamaterials, tunable metamaterials and spintronics.
63002
Gregory, Simon A.
2664c4ed-75fe-457f-95f4-4ddf9fd7bfaa
Stenning, Gavin B.G.
89677893-92db-4258-b4df-d76c8cb11331
Bowden, Graham J.
f73a1c01-4d38-4170-bf30-9ebfa4283807
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Gregory, Simon A.
2664c4ed-75fe-457f-95f4-4ddf9fd7bfaa
Stenning, Gavin B.G.
89677893-92db-4258-b4df-d76c8cb11331
Bowden, Graham J.
f73a1c01-4d38-4170-bf30-9ebfa4283807
Zheludev, Nikolay I.
32fb6af7-97e4-4d11-bca6-805745e40cc6
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d

Gregory, Simon A., Stenning, Gavin B.G., Bowden, Graham J., Zheludev, Nikolay I. and de Groot, P.A.J. (2014) Giant magnetic modulation of a planar, hybrid metamolecule resonance. New Journal of Physics, 16 (6), 63002. (doi:10.1088/1367-2630/16/6/063002).

Record type: Article

Abstract

Coupling magnetic elements to metamaterial structures creates hybrid metamolecules with new opportunities. Here we report on the magnetic control of a metamolecule resonance, by utilizing the interaction between a single split ring resonator (SRR) and a magnetic thin film of permalloy. To suppress eddy current shielding, the permalloy films are patterned into arrays of 30–500 µm diameter discs. Strong hybridized resonances were observed at the anticrossing between the split ring resonance and the ferromagnetic resonance (FMR) of the permalloy. In particular, it is possible to achieve 40 dB modulation of the electric (symmetric) mode of the SRR on sweeping the applied magnetic field through the SRR/FMR anticrossing. The results open the way to the design of planar metamaterials, with potential applications in nonlinear metamaterials, tunable metamaterials and spintronics.

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More information

e-pub ahead of print date: 3 June 2014
Published date: 3 June 2014
Organisations: Optoelectronics Research Centre, Physics & Astronomy

Identifiers

Local EPrints ID: 369265
URI: https://eprints.soton.ac.uk/id/eprint/369265
PURE UUID: 5b67d9af-4aab-4f83-8b00-6abd89a30ab2
ORCID for Nikolay I. Zheludev: ORCID iD orcid.org/0000-0002-1013-6636

Catalogue record

Date deposited: 23 Sep 2014 09:53
Last modified: 12 Nov 2019 02:02

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Contributors

Author: Simon A. Gregory
Author: Gavin B.G. Stenning
Author: Graham J. Bowden
Author: P.A.J. de Groot

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