Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/39309
Título: | Anderson localization of light in disordered superlattices containing graphene layers |
Autor(es): | Chaves, A. J. Peres, N. M. R. Pinheiro, Felipe A. |
Palavras-chave: | Graphene 2D Materials |
Data: | 24-Set-2015 |
Editora: | American Physical Society |
Revista: | Physical Review B: Condensed Matter and Materials Physics |
Resumo(s): | We theoretically investigate light propagation and Anderson localization in one-dimensional disordered superlattices composed of dielectric stacks with graphene sheets in between. Disorder is introduced either on graphene material parameters ({\it e.g.} Fermi energy) or on the widths of the dielectric stacks. We derive an analytic expression for the localization length $\xi$, and compare it to numerical simulations using transfer matrix technique; a very good agreement is found. We demonstrate that the presence of graphene may strongly attenuate the anomalously delocalised Breswter modes, and is at the origin of a periodic dependence of $\xi$ on frequency, in contrast to the usual asymptotic decay, $\xi \propto \omega^{-2}$. By unveiling the effects of graphene on Anderson localization of light, we pave the way for new applications of graphene-based, disordered photonic devices in the THz spectral range. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/39309 |
DOI: | 10.1103/PhysRevB.92.195425 |
ISSN: | 1098-0121 |
e-ISSN: | 1550-235X |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Chaves-1509.07284.pdf | 1,75 MB | Adobe PDF | Ver/Abrir |