The origin of magnetic polarizability in metamaterials at optical frequencies - 
an electrodynamic approach

Rockstuhl, C.; Zentgraf, T.; Pshenay-Severin, E.; Petschulat, J.; Chipouline, A.; Kuhl, J.; Pertsch, T.; Giessen, H.; Lederer, F.

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The origin of magnetic polarizability in metamaterials at optical frequencies - an electrodynamic approach

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Zentgraf, T.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Kuhl, J.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Giessen, H.
Former Research Groups, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Rockstuhl, C., Zentgraf, T., Pshenay-Severin, E., Petschulat, J., Chipouline, A., Kuhl, J., et al. (2007). The origin of magnetic polarizability in metamaterials at optical frequencies - an electrodynamic approach. Optics Express, 15(14), 8871-8883.

Cite as: https://hdl.handle.net/21.11116/0000-000E-B5F6-0

Abstract

We explain the origin of the electric and particular the magnetic polarizabiltiy of metamaterials employing a fully electromagnetic plasmonic picture. As example we study an U-shaped split-ring resonator based metamaterial at optical frequencies. The relevance of the split-ring resonator orientation relative to the illuminating field for obtaining a strong magnetic response is outlined. We reveal higher-order magnetic resonances and explain their origin on the basis of higher-order plasmonic eigenmodes caused by an appropriate current flow in the split-ring resonator. Finally, the conditions required for obtaining a negative index at optical frequencies in a metamaterial consisting of split-ring resonators and wires are investigated. (c) 2007 Optical Society of America.