TY - JOUR
T1 - Relation between peak structures of loss functions of single double-walled carbon nanotubes and interband transition energies
AU - Sato, Yohei
AU - Terauchi, Masami
AU - Saito, Yahachi
AU - Sato, Kentaro
AU - Saito, Riichiro
PY - 2008/8/1
Y1 - 2008/8/1
N2 - 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/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.
AB - 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/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.
KW - Carbon nanotubes
KW - Electron energy-loss spectroscopy
KW - Extended tight-binding calculation
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U2 - 10.1093/jmicro/dfn012
DO - 10.1093/jmicro/dfn012
M3 - Article
C2 - 18632745
AN - SCOPUS:47649132160
VL - 57
SP - 129
EP - 132
JO - Microscopy (Oxford, England)
JF - Microscopy (Oxford, England)
SN - 2050-5698
IS - 4
ER -