Title: | Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics |
Authors: | Lin, I-Tan Lai, Yi-Ping Wu, Kuang-Hsiung Liu, Jia-Ming 電子物理學系 Department of Electrophysics |
Keywords: | graphene;plasmon;coupling;phonon;scattering rate;optical conductivity;terahertz;Drude model |
Issue Date: | 1-Mar-2014 |
Abstract: | 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. |
URI: | http://dx.doi.org/10.3390/app4010028 http://hdl.handle.net/11536/124287 |
ISSN: | 2076-3417 |
DOI: | 10.3390/app4010028 |
Journal: | Applied Sciences-Basel |
Begin Page: | 28 |
End Page: | 41 |
Appears in Collections: | Articles |
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