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Retarded long-range interaction in split-ring-resonator square arrays

Decker, M.; Feth, N.; Soukoulis, C.M.; Linden, S.; Wegener, M.

We systematically investigate the optical extinction spectra of planar gold split-ring-resonator square arrays operating at -200-THz frequency versus the lattice constant and versus angle of incidence. We find a strong dependence of the resonance damping on the in-plane wave vector, namely, the resonance damping increases (decreases) versus the in-plane wave vector for small lattice constants (large lattice constants). By comparison with two simple one-dimensional models as well as with more complete numerical calculations, this behavior is interpreted in terms of a long-range retarded interaction among the split-ring resonators. In contrast, the assumptions of only nearest-neighbor interaction and/or of an instantaneous interaction lead to a striking disagreement with the overall experimental facts.

Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2011
Sprache Englisch
Identifikator ISSN: 0163-1829
KITopen ID: 1000027142
HGF-Programm 43.14.01; LK 01
Erschienen in Physical Review B
Band 84
Heft 8
Seiten 085416/1 - 7
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