Physics – Condensed Matter – Materials Science
Scientific paper
2004-07-14
Phys. Rev. Lett. 93, 107402 (2004)
Physics
Condensed Matter
Materials Science
to be published in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.93.107402
We analyze the transmission and reflection data obtained through transfer matrix calculations on metamaterials of finite lengths, to determine their effective permittivity and permeability. Our study concerns metamaterial structures composed of periodic arrangements of wires, cut-wires, split ring resonators (SRRs), closed-SRRs, and both wires and SRRs. We find that the SRRs have a strong electric response, equivalent to that of cut-wires, which dominates the behavior of left-handed materials (LHM). Analytical expressions for the effective parameters of the different structures are given, which can be used to explain the transmission characteristics of LHMs. Of particular relevance is the criterion introduced by our studies to identify if an experimental transmission peak is left- or right-handed.
Economou E. N.
Kafesaki Maria
Koschny Th.
Soukoulis Costas M.
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