Web Release Date: October 30,
Generation of Terahertz Radiation by Hot Electrons in Carbon Nanotubes
Department of Applied and Theoretical Physics, Novosibirsk State Technical University, Novosibirsk 630092, Russia
International Center for Condensed Matter Physics, University of Brasilia, 70904-970 Brasilia DF, Brazil
School of Physics, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom
Received July 27, 2007
Revised October 14, 2007
Abstract:
We demonstrate theoretically that quasi-metallic carbon nanotubes emit terahertz radiation induced by an applied voltage. It is shown that in the ballistic transport regime their spontaneous emission spectra have a universal frequency and bias voltage dependence, which raises the possibility of utilizing this effect for high-frequency nanoelectronic devices.
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