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arXiv · 1201.0191

Surface plasmon enhanced absorption and suppressed transmission in periodic arrays of graphene ribbons

A. Yu. Nikitin·F. Guinea·F. J. Garcia-Vidal·L. Martin-Moreno
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Abstract

Resonance diffraction in the periodic array of graphene micro-ribbons is theoretically studied following a recent experiment [L. Ju et al, Nature Nanotech. 6, 630 (2011)]. Systematic studies over a wide range of parameters are presented. It is shown that a much richer resonant picture would be observable for higher relaxation times of charge carriers: more resonances appear and transmission can be totally suppressed. The comparison with the absorption cross-section of a single ribbon shows that the resonant features of the periodic array are associated with leaky plasmonic modes. The longest-wavelength resonance provides the highest visibility of the transmission dip and has the strongest spectral shift and broadening with respect to the single-ribbon resonance, due to collective effects.

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A. Yu. Nikitin, F. Guinea, F. J. Garcia-Vidal, L. Martin-Moreno. 2011-12-30. Surface plasmon enhanced absorption and suppressed transmission in periodic arrays of graphene ribbons. https://doi.org/10.1103/physrevb.85.081405

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