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Effective medium theory of left-handed materials

We analyze the transmission and reflection data obtained through transfer matrix calculations on metamaterials of finite lengths, to determine their effective permittivity epsilon and permeability micro. Our study concerns metamaterial structures composed of periodic arrangements of wires, cut wires...

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Bibliographic Details
Published in:Physical review letters 2004-09, Vol.93 (10), p.107402.1-107402.4, Article 107402
Main Authors: KOSCHNY, T, KAFESAKI, M, ECONOMOU, E. N, SOUKOULIS, C. M
Format: Article
Language:English
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Summary:We analyze the transmission and reflection data obtained through transfer matrix calculations on metamaterials of finite lengths, to determine their effective permittivity epsilon and permeability micro. 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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.107402