Efficiencies of Aloof-Scattered Electron Beam Excitation of Metal and Graphene Plasmons

We assessed the efficiencies of surface plasmon excitation by an aloof-scattered electron beam on metals and graphene. Graphene is shown to exhibit high energy transfer efficiencies at very low electron kinetic energy requirements. We show that the exceptional performance of graphene is due to its u...

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Bibliographic Details
Published inIEEE transactions on plasma science Vol. 43; no. 4; pp. 951 - 956
Main Authors Ooi, Kelvin J. A., Wee Shing Koh, Hong Son Chu, Tan, Dawn T. H., Lay Kee Ang
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Dispersion
Electron beams
Electrons
Energy efficiency
Energy exchange
Energy loss
Graphene
Graphite
Kinetics
Metals
Plasma physics
Plasmons
Scattering
slow light
surface plasmons (SPs)
Electron beams
surface plasmons (SPs)
slow light
graphene
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Summary:We assessed the efficiencies of surface plasmon excitation by an aloof-scattered electron beam on metals and graphene. Graphene is shown to exhibit high energy transfer efficiencies at very low electron kinetic energy requirements. We show that the exceptional performance of graphene is due to its unique plasmon dispersion, low electronic density, and thin-film structure. The potential applications of these aloof-scattered graphene plasmons are discussed in the aspects of coherent radiation.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2014.2379259