Theory of negative-refractive-index response of double-fishnet structures

被引：164
|
作者：
Mary, A. [1 ]
Rodrigo, Sergio G. [2 ]
Garcia-Vidal, F. J. [1 ]
Martin-Moreno, L. [2 ]
机构：
[1] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada, E-28049 Madrid, Spain
[2] Univ Zaragoza CSIC, Dept Fis Mat Condensada ICMA, E-50009 Zaragoza, Spain
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.101.103902
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A theory is presented of the negative refractive index observed in the so-called double-fishnet structures. We find that the electrical response of these structures is dominated by the cutoff frequency of the hole waveguide whereas the resonant magnetic response is due to the excitation of gap surface plasmon polaritons propagating along the dielectric slab. Associated with this origin, we show how the negative refractive index in these metamaterials presents strong dispersion with the parallel momentum of the incident light.
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页数：4
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