Terahertz Optoelectronic Property of Graphene:  Substrate-Induced Effects on Plasmonic Characteristics

I-Tan Lin; Yi-Ping Lai; Kuang-Hsiung Wu; Jia-Ming Liu

doi:10.3390/app4010028

Applied Sciences (Feb 2014)

Terahertz Optoelectronic Property of Graphene: Substrate-Induced Effects on Plasmonic Characteristics

I-Tan Lin,
Yi-Ping Lai,
Kuang-Hsiung Wu,
Jia-Ming Liu

Affiliations

I-Tan Lin: Electrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USA
Yi-Ping Lai: Electrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USA
Kuang-Hsiung Wu: Department of Electrophysics, National Chiao-Tung University, Hsinchu 300, Taiwan
Jia-Ming Liu: Electrical Engineering Department, University of California, Los Angeles, Los Angeles, CA 90095, USA

DOI: https://doi.org/10.3390/app4010028
Journal volume & issue: Vol. 4, no. 1
pp. 28 – 41

Abstract

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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.

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

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