期刊
APPLIED SCIENCES-BASEL
卷 4, 期 1, 页码 28-41出版社
MDPI
DOI: 10.3390/app4010028
关键词
graphene; plasmon; coupling; phonon; scattering rate; optical conductivity; terahertz; Drude model
类别
资金
- U.S. Air Force AOARD [FA2386-13-1-4022]
The terahertz plasmon dispersion of a multilayer system consisting of graphene on dielectric and/or plasma thin layers is systematically investigated. We show that graphene plasmons can couple with other quasiparticles such as phonons and plasmons of the substrate; the characteristics of the plasmon dispersion of graphene are dramatically modified by the presence of the coupling effect. The resultant plasmon dispersion of the multilayer system is a strong function of the physical parameters of the spacer and the substrate, signifying the importance of the substrate selection in constructing graphene-based plasmonic devices.
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