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- Title
Relation between peak structures of loss functions of single double-walled carbon nanotubes and interband transition energies.
- Authors
Yohei Sato; Masami Terauchi; Yahachi Saito; Kentaro Sato; Riichiro Saito
- Abstract
Electron energy-loss spectra of single double-walled carbon nanotubes (DWCNTs) were compared with calculated joint density of states (jDOSs) obtained by a simple tight-binding (STB) and an extended tight-binding (ETB) method. From the comparisons, interband transition energies of ETB calculations show better agreement with peak positions of the experimental spectra than those of STB results. From a further comparison among calculated jDOS, real and imaginary parts of a dielectric function and a loss function Im[â1/ε], it was confirmed that the peak energies in a spectrum of single DWCNTs are almost equal to those of the optical absorption spectrum ε2.
- Subjects
CARBON nanotubes; SPECTRUM analysis; EXCITON theory; PARTICLES (Nuclear physics)
- Publication
Journal of Electron Microscopy, 2008, Vol 57, Issue 4, p129
- ISSN
0022-0744
- Publication type
Article
- DOI
10.1093/jmicro/dfn012