Magnetic Response of Metamaterials at 100 Terahertz | Zendy

Stefan Lindén | Zendy; C. Enkrich | Zendy; Martin Wegener | Zendy; Jiangfeng Zhou | Zendy; Thomas Koschny | Zendy; Costas M. Soukoulis | Zendy

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Magnetic Response of Metamaterials at 100 Terahertz

Author(s) -

Stefan Lindén,

C. Enkrich,

Martin Wegener,

Jiangfeng Zhou,

Thomas Koschny,

Costas M. Soukoulis

Publication year - 2004

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1105371

Subject(s) - metamaterial , terahertz radiation , excitation , resonance (particle physics) , electric field , permittivity , magnetic field , capacitor , materials science , optics , optoelectronics , negative refraction , capacitance , condensed matter physics , nuclear magnetic resonance , dielectric , physics , atomic physics , voltage , electrode , quantum mechanics

An array of single nonmagnetic metallic split rings can be used to implement a magnetic resonance, which arises from an inductor-capacitor circuit (LC) resonance, at 100-terahertz frequency. The excitation of the LC resonance in the normal-incidence geometry used in our experiments occurs through the coupling of the electric field of the incident light to the capacitance. The measured optical spectra of the nanofabricated gold structures come very close to the theoretical expectations. Additional numerical simulations show that our structures exhibit a frequency range with negative permeability for a beam configuration in which the magnetic field couples to the LC resonance. Together with an electric response that has negative permittivity, this can lead to materials with a negative index of refraction.

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