Volume 80, Number 3, November 2007
Article Number 37006
Number of page(s) 5
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
Published online 09 October 2007
EPL, 80 (2007) 37006
DOI: 10.1209/0295-5075/80/37006

Impact of combined electric response on left-handed materials

X. H. Chen and A. K. Soh

Department of Mechanical Engineering, The University of Hong Kong - Pokfulam Road, Hong Kong, China

received 13 July 2007; accepted in final form 7 September 2007; published November 2007
published online 9 October 2007

The transmission coefficient of metamaterial structures, which include a combined system of a single split ring resonator and wire (SRRW) and that of a closed-SRR and wire (CRRW), has been studied by varying the width of the continuous wire. Our numerical results support the analytical arguments made by Koschny et al. (Phys. Rev. Lett.93 (2004) 107402), i.e., the combined electric response of the SRRW system was approximately identical to that of the corresponding CRRW system. It is important to note that a better picture of transmission and index of refraction can be presented by considering three distinct regions, i.e., $f_{m} > f_{p}^\prime $, $f_{m}^\prime > f_{p}^\prime > f_{m}$ and $f_{p}^\prime > f_{m}^\prime $, which appear in order by increasing the width of the wire. This is because only the case of $f_{p}^\prime > f_{m}^\prime $ was considered in the previous works.

78.20.Ci - Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity).
41.20.Jb - Electromagnetic wave propagation; radiowave propagation.

© Europhysics Letters Association 2007