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Opt Lett. 2007 Apr 1;32(7):856-8.

Circular dichroism of planar chiral magnetic metamaterials.

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  • 1Institut für Angewande Physik and DFG-Center for Functional Nanostructures, Universität Karlsruhe TH, Karlsruhe, Germany.


We propose, fabricate, and study a double-layer chiral planar metamaterial that exhibits pronounced circular dichroism at near-infrared wavelengths. The antisymmetric oscillation modes of the two coupled layers allow local magnetic-dipole moments and enhanced polarization effects compared with similar single-layer systems where only electric-dipole moments occur. Experiment and rigorous theoretical calculations are in good agreement.

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