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Type: Artigo de periódico
Title: Plasmon polariton and < n >=0 non-Bragg gaps in superlattices with metamaterials
Author: de Carvalho, CAA
Cavalcanti, SB
Reyes-Gomez, E
Oliveira, LE
Abstract: We consider one-dimensional photonic superlattices made up of alternate layers of a right-handed nondispersive material and a metamaterial with Drude-type dielectric permittivity and magnetic permeability. By thoroughly investigating the dispersion relation for the propagation of obliquely incident optical fields obtained from Maxwell's equations and the transfer-matrix technique, we demonstrate that, in the long-wavelength limit, the dispersion is the same that one would obtain by considering a homogeneous effective medium with Drude-type responses at shifted electric and magnetic plasmon frequencies. Moreover, we show that the plasmon polariton and < n > = 0 non-Bragg gaps correspond to regions of the low-energy spectrum where the effective medium is absorptive, exhibiting an imaginary effective refraction index.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review B. Amer Physical Soc, v. 83, n. 8, 2011.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.83.081408
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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