Wednesday, June 10, 2015
Abstract-Terahertz plasmon-polariton modes in graphene driven by electric field inside a Fabry-Pérot cavity
C. X. Zhao1, W. Xu1,2,a), L. L. Li1, C. Zhang1 and F. M. Peeters3
We present a study on plasmon-polariton modes in placed inside an and driven by a source-to-drain The electron velocity and electron temperature are determined by solving self-consistently the momentum- and energy-balance equations in which electron interactions with impurities, acoustic-, and optic-phonons are included. Based on many-body self-consistent field theory, we develop a tractable approach to study plasmon-polariton in an system. We find that when is placed inside a Fabry-Pérot two branches of the plasmon-polariton modes can be observed and these modes are very much optic- or plasmon-like. The frequencies of these modes depend markedly on driving especially at higher frequency regime. Moreover, the plasmon-polariton frequency in is in terahertz (THz) bandwidth and can be tuned by changing the length, gate voltage, and driving This work is pertinent to the application of graphene-based structures as tunable THz devices.