Title :
Excitons and interband terahertz transitions in narrow-gap carbon nanotubes
Author :
Portnoi, M.E. ; Downing, C.A. ; Hartmann, R.R. ; Shelykh, I.A.
Author_Institution :
Sch. of Phys., Univ. of Exeter, Exeter, UK
Abstract :
We show, via a solution of the quasi-one-dimensional two-body problem applied to a Dirac system, that excitonic effects suppress the one-dimensional Van Hove singularity in single-walled carbon nanotubes with narrow band gaps.
Keywords :
absorption coefficients; carbon nanotubes; excitons; narrow band gap semiconductors; semiconductor nanotubes; C; Dirac system; excitons; interband terahertz transitions; narrow band-gap single-walled carbon nanotubes; one-dimensional Van Hove singularity; quasione-dimensional two-body problem; Absorption; Carbon nanotubes; Electric potential; Excitons; Mathematical model; Photonic band gap;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2013 International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-4673-5705-0
DOI :
10.1109/ICEAA.2013.6632229
