What is it about?
The effect of the small deformations of the atomic structure (C-C bond) on the absorption and emission of electromagnetic radiation in carbon tubes and graraphene ribbons
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Why is it important?
The absorption and emission in THz range is high and universal for many carbon tubes and graphene ribbons.
Perspectives
This works provides a simple theoretical model for understanding the properties of tubes and ribbons under small intrinsic strain and it justifies the mechanism of THz emission and absorption in nearly metallic tubes and ribbons.
Vasil Saroka
Norwegian University of Science and Technology
Read the Original
This page is a summary of: Interband transitions in narrow-gap carbon nanotubes and graphene nanoribbons, Journal of Applied Physics, April 2019, American Institute of Physics,
DOI: 10.1063/1.5080009.
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Resources
Terahertz transitions in narrow-gap carbon nanotubes and graphene nanoribbons
International symposium “Nanostructures: Physics and Technology”, St Petersburg, Russia. http://www.ioffe.ru/NANO2016/
Terahertz Applications of Carbon Nanotubes and Graphene Nanoribbons
The results of the theoretical study of interband THz transitions in narrow-gap carbon nanotubes and graphene nanoribbons are reported. We consider dipole transitions across magnetically-induced gaps in armchair nanotubes, curvature-induced gaps in quasi-metallic nanotubes and edge-effect induced gaps in armchair nanoribbons. A giant enhancement of the transition matrix elements is discovered for all three types of nanostructures.
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