title: Experimental observation of true left-handed transmission peaks in metamaterials.
abstract: We report true left-handed (LH) behavior in a composite metamaterial consisting of a periodically arranged split ring resonator (SRR) and wire structures. We demonstrate the magnetic resonance of the SRR structure by comparing the transmission spectra of SRRs with those of closed SRRs. We have confirmed experimentally that the effective plasma frequency of the LH material composed of SRRs and wires is lower than the plasma frequency of the wires. A well-defined LH transmission band with a peak value of -1.2 dB (-0.3 dB/cm) was obtained. The experimental results agree extremely well with the theoretical calculations.
authors.affiliation: Department of Physics, Bilkent University, Bilkent 06800, Ankara, Turkey. aydin@fen.bilkent.edu.tr
authors.forename: Koray
authors.initials: K
authors.lastname: Aydin
authors.forename: Kaan
authors.initials: K
authors.lastname: Guven
authors.forename: Maria
authors.initials: M
authors.lastname: Kafesaki
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Costas M
authors.initials: CM
authors.lastname: Soukoulis
authors.forename: Ekmel
authors.initials: E
authors.lastname: Ozbay