The stunning success of metal-based plasmonics for manipulating light at the nanoscale has been empowered by imaginative designs and advanced nano-fabrication. However, the fundamental optical and electronic properties of elemental metals, the prevailing plasmonic media, are difficult to alter using external stimuli. This handicap has prompted the search for alternative plasmonic media, with graphene emerging as one of the most capable candidates. I will describe three recent results exploring various aspects of plasmons in graphene: 1) ultrafast optical switching of infrared plasmon polaritons in high-mobility graphene; 2) composite plasmons in graphene/hBN moire superlattices; and 3) plasmonic reflections at a line-like one dimensional perturbation in graphene structures with carbon nanotube gates.


Seminar, March 1, 2016, 15:00. ICFO’s Seminar Room

Hosted by Prof. Javier García de Abajo