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Type: 
Journal
Description: 
The electronic response of self-doped graphene supported on metal substrates shows two well-distinct plasmon modes: the acoustic plasmon, characterized by a linear dispersion, and a nonlinear plasmon. The nonlinear plasmon originates from the anisotropy of the electron bands of graphene around the K point. The existence of two plasmons with a different dispersion relation demonstrates that charge carriers with different group velocity may coexist within the same band in epitaxial graphene.
Publisher: 
Pergamon
Publication date: 
1 May 2014
Authors: 

Antonio Politano, Gennaro Chiarello

Biblio References: 
Volume: 71 Pages: 176-180
Origin: 
Carbon