A tunable phonon-exciton Fano system in bilayer graphene.

Gate tunable infrared phonon anomalies in bilayer graphene.

We observe a giant increase of the infrared intensity and a softening of the in-plane antisymmetric phonon mode E(u) ( approximately 0.2 eV) in bilayer graphene as a function of the gate-induced doping. The phonon peak has a pronounced Fano-like asymmetry. We suggest that the intensity growth and the softening originate from the coupling of the phonon mode to the narrow electronic transition be...

Novel midinfrared plasmonic properties of bilayer graphene.

We study the midinfrared plasmonic response in Bernal-stacked bilayer graphene. Unlike its monolayer counterpart, bilayer graphene accommodates optically active phonon modes and a resonant interband transition at infrared frequencies. They strongly modify the plasmonic properties of bilayer graphene, leading to Fano-type resonances, giant plasmonic enhancement of infrared phonon absorption, a n...

Supporting Information: Tunable phonon-induced transparency in bilayer graphene nanoribbons

Dynamic control of plasmonic resonances with graphene based nanostructures

Emani, Naresh Kumar PhD, Purdue University, December 2014. Dynamic Control of Plasmonic Resonances with Graphene Based Nanostructures . Major Professors: Alexandra Boltasseva and Alexander V. Kildishev. Light incident on a metallic structure excites collective oscillations of electrons termed as plasmons. These plasmons are useful in control and manipulation of information in nanoscale dimensio...

Thermally activated conductivity in gapped bilayer graphene

This is a theoretical study of electron transport in gated bilayer graphene — a novel semiconducting material with a tunable band gap. It is shown that the quantum mechanical superposition between conduction and valence band states enhances the subgap conductivity and facilitates the thermally activated transport. The mechanism proposed can also lead to the non-monotonic conductivity vs. temper...