title: Relation between peak structures of loss functions of single double-walled carbon nanotubes and interband transition energies.
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[-1/epsilon], it was confirmed that the peak energies in a spectrum of single DWCNTs are almost equal to those of the optical absorption spectrum epsilon(2).
authors.forename: Yohei
authors.initials: Y
authors.lastname: Sato
authors.forename: Masami
authors.initials: M
authors.lastname: Terauchi
authors.forename: Yahachi
authors.initials: Y
authors.lastname: Saito
authors.forename: Kentaro
authors.initials: K
authors.lastname: Sato
authors.forename: Riichiro
authors.initials: R
authors.lastname: Saito
mesh_terms: D036103:Nanotechnology; D037742:Nanotubes, Carbon / Q000737:chemistry*
chemical_list: D037742:Nanotubes, Carbon