Title:
Magnetic Response of Metamaterials at 100 Terahertz
Author(s):
Stefan Linden, Christian Enkrich, Martin Wegener, Jiangfeng Zhou, Thomas Koschny, Costas M. Soukoulis
Source:
Science Mag (www.sciencemag.org)
Vol./Issue/Date:
Science Vol. 306, No. 5700, 19. November
Year:
2004
Page(s):
1351 - 1353
Keywords:
Abstract:
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
Document:
Reference Id:
82
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