Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/56810
Título: | Probing nonlocal effects in metals with graphene plasmons |
Autor(es): | Dias, Eduardo J. C. Iranzo, David Alcaraz Gonçalves, P. A. D. Hajati, Yaser Bludov, Yuliy V. Jauho, Antti-Pekka Mortensen, N. Asger Koppens, Frank H. L. Peres, N. M. R. |
Palavras-chave: | Graphene Plasmons |
Data: | 2018 |
Editora: | American Physical Society (APS) |
Revista: | Physical Review B - Condensed Matter and Materials Physics |
Resumo(s): | In this paper we analyze the effects of nonlocality on the optical properties of a system consisting of a thin metallic film separated from a graphene sheet by a hexagonal boron nitride (hBN) layer. We show that nonlocal effects in the metal have a strong impact on the spectrum of the surface plasmon-polaritons on graphene. If the graphene sheet is shaped into a grating, we show that the extinction curves can be used to shed light on the importance of nonlocal effects in metals. Therefore, graphene surface plasmons emerge as a tool for probing nonlocal effects in metallic nanostructures, including thin metallic films. As a byproduct of our study, we show that nonlocal effects lead to smaller losses for the graphene plasmons than what is predicted by a local calculation. We show that these effects can be very well mimicked using a local theory with an effective spacer thickness larger than its actual value. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/56810 |
DOI: | 10.1103/PhysRevB.97.245405 |
ISSN: | 2469-9950 |
e-ISSN: | 2469-9969 |
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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1804.06478.pdf | 2,9 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons