Special Section on Fundamental and Applied Nanoelectromagnetics

Plasmon polariton deceleration in graphene structures

[+] Author Affiliations
Konstantin G. Batrakov

Belarusian State University, Institute for Nuclear Problems, Bobruiskaya 11, 220030 Minsk, Belarus

Vasily A. Saroka

Belarusian State University, Institute for Nuclear Problems, Bobruiskaya 11, 220030 Minsk, Belarus

Sergey A. Maksimenko

Belarusian State University, Institute for Nuclear Problems, Bobruiskaya 11, 220030 Minsk, Belarus

Christian Thomsen

Technische Universität Berlin, Institut für Festkörperphysik, Hardenbergstr. 36, D-10623 Berlin, Germany

J. Nanophoton. 6(1), 061719 (Dec 05, 2012). doi:10.1117/1.JNP.6.061719
History: Received August 16, 2012; Revised October 23, 2012; Accepted October 23, 2012
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Abstract.  Surface plasmon-polariton waves with low-phase speed in carbon nanostructures can be utilized for the generation of coherent terahertz radiation through the Čerenkov mechanism, the effect being especially pronounced in bilayer and multilayer graphene. Using the many-body formalism and the tight-binding approach, we derived the dispersion equations of the surface plasmon-polariton waves in graphene. In single-layer graphene, the phase speed is about three to five times smaller than the speed of light in a vacuum. In bilayer graphene, inter-layer electron tunneling suppresses the reduction of the phase speed. Reduction of the phase speed by as much as 300 times is possible in a graphene structure with two spatially expanded monolayers, because inter-layer tunneling is suppressed, and the interlayer distance can be used to tune the plasmon frequency and the phase speed.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Konstantin G. Batrakov ; Vasily A. Saroka ; Sergey A. Maksimenko and Christian Thomsen
"Plasmon polariton deceleration in graphene structures", J. Nanophoton. 6(1), 061719 (Dec 05, 2012). ; http://dx.doi.org/10.1117/1.JNP.6.061719


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