G. Grinstein, Yuhai Tu, et al.
Physical Review Letters
We find that the optical properties of carbon nanotubes reflect remarkably strong effects of exciton-phonon coupling. Tight-binding calculations show that a significant fraction of the spectral weight of the absorption peak is transferred to a distinct exciton + phonon sideband, which is peaked at around 200 meV above the main absorption peak. This sideband provides a distinctive signature of the excitonic character of the optical transition. The exciton-phonon coupling is reflected in a dynamical structural distortion, which contributes a binding energy of up to 100 meV. The distortion is surprisingly long ranged, and is strongly dependent on chirality. © 2005 The American Physical Society.
G. Grinstein, Yuhai Tu, et al.
Physical Review Letters
François Léonard, J. Tersoff
Physical Review Letters
Vasili Perebeinos, Slava V. Rotkin, et al.
Nano Letters
Thuc-Quyen Nguyen, Richard Martel, et al.
JACS