Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.86.115430
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dc.titleEnhanced optical dichroism of graphene nanoribbons
dc.contributor.authorHipolito, F.
dc.contributor.authorChaves, A.J.
dc.contributor.authorRibeiro, R.M.
dc.contributor.authorVasilevskiy, M.I.
dc.contributor.authorPereira, V.M.
dc.contributor.authorPeres, N.M.R.
dc.date.accessioned2014-10-16T09:23:48Z
dc.date.available2014-10-16T09:23:48Z
dc.date.issued2012-09-19
dc.identifier.citationHipolito, F., Chaves, A.J., Ribeiro, R.M., Vasilevskiy, M.I., Pereira, V.M., Peres, N.M.R. (2012-09-19). Enhanced optical dichroism of graphene nanoribbons. Physical Review B - Condensed Matter and Materials Physics 86 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.86.115430
dc.identifier.issn10980121
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/96468
dc.description.abstractThe optical conductivity of graphene nanoribbons is analytical and exactly derived. It is shown that the absence of translational invariance along the transverse direction allows considerable intraband absorption in a narrow frequency window that varies with the ribbon width, and lies in the THz range domain for ribbons 10-100 nm wide. In this spectral region the absorption anisotropy can be as high as two orders of magnitude, which renders the medium strongly dichroic, and allows for a very high degree of polarization (up to ∼85%) with just a single layer of graphene. Using a cavity for impedance enhancement, or a stack of few layer nanoribbons, these values can reach almost 100%. This opens a potential prospect of employing graphene ribbon structures as efficient polarizers in the far IR and THz frequencies. © 2012 American Physical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevB.86.115430
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1103/PhysRevB.86.115430
dc.description.sourcetitlePhysical Review B - Condensed Matter and Materials Physics
dc.description.volume86
dc.description.issue11
dc.description.page-
dc.description.codenPRBMD
dc.identifier.isiut000308866700007
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