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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/12628

Title: A d.c. magnetic metamaterial
Authors: Magnus, F.
Wood, B.
Moore, J.
Morrison, Kelly
Perkins, G.
Wiltshire, M.C.K.
Caplin, D.
Cohen, L.F.
Pendry, J.B.
Fyson, John
Issue Date: 2008
Publisher: © Nature Publishing Group
Citation: MAGNUS, F. ... et al, 2008. A d.c. magnetic metamaterial. Nature Materials, 7 (4), pp.295-297.
Abstract: Electromagnetic metamaterials are a class of materials that have been artificially structured on a subwavelength scale. They are currently the focus of a great deal of interest because they allow access to previously unrealizable properties such as a negative refractive index. Most metamaterial designs have so far been based on resonant elements, such as split rings, and research has concentrated on microwave frequencies and above. Here, we present the first experimental realization of a non-resonant metamaterial designed to operate at zero frequency. Our samples are based on a recently proposed template for an anisotropic magnetic metamaterial consisting of an array of superconducting plates. Magnetometry experiments show a strong, adjustable diamagnetic response when a field is applied perpendicular to the plates. We have calculated the corresponding effective permeability, which agrees well with theoretical predictions. Applications for this metamaterial may include non-intrusive screening of weak d.c. magnetic fields.
Version: Accepted for publication
DOI: 10.1038/nmat2126
URI: https://dspace.lboro.ac.uk/2134/12628
Publisher Link: http://dx.doi.org/10.1038/nmat2126
ISSN: 1476-1122
Appears in Collections:Published Articles (Physics)

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