Semiclassical fluid model of nonlinear plasmons in doped graphene

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Eliasson, Bengt and Liu, Chuan Sheng (2018) Semiclassical fluid model of nonlinear plasmons in doped graphene. Physics of Plasmas, 25 (1). 012105. ISSN 1070-664X (https://doi.org/10.1063/1.5010402)

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Abstract

A nonlinear fluid model of high-frequency plasmons in doped graphene is derived by taking fluid moments of the semi-classical kinetic equation for the electron gas. As a closure of the fluid moments, adiabatic compression is assumed with a given form of the distribution function, combined with an exact linear response based on the linearized Vlasov-Poisson system. In the linear regime, the model is in the long wavelength limit consistent with previous results using the random phase approximation for a two-dimensional electron gas, while it neglects the short-range interactions between massless Dirac fermions. The fluid model may be used to study non-linear plasmonic wave mixing and optical coupling to lasers in graphene.

ORCID iDs

Eliasson, Bengt ORCID logoORCID: https://orcid.org/0000-0001-6039-1574 and Liu, Chuan Sheng;
CORE (COnnecting REpositories)