Plasmons in Nanostructured Graphene

摘要: Plasmons, collective electron density oscillations, provide physicists with intriguing challenges and possibilities. The inherent many-body properties of the plasmons together their ability to localize light into small volumes make interesting from both a purely theoretical viewpoint an applications point view. Graphene, its rather special electronic properties, provides field plasmonics new material that exhibits large localization electric low losses. In this thesis we cover basic theory underlying modern research. We do so in context linear response functions Random Phase Approximation are standard tools field. apply different contexts, trying highlight differences similarities between graphene plasmons, 2DEG's conventional interface plasmons. present scattering results nanostructured surface, tailored specifically allow plasmon excitation. investigate reflection, transmission absorption such surfaces also analyze resonances arise.