Excitons and high-order optical transitions in individual carbon nanotubes

Abstract

We examine the excitonic nature of high-lying optical transitions in single-walled carbon nanotubes by means of Rayleigh scattering spectroscopy. A careful analysis of the principal transitions of individual semiconducting and metallic nanotubes reveals that in both cases the lineshape is consistent with an excitonic model, but not one of free-carriers. For semiconducting species, side-bands are observed at ~200 meV above the third and fourth optical transitions. These features are ascribed to exciton-phonon bound states. Such side-bands are not apparent for metallic nanotubes,as expected from the reduced strength of excitonic interactions in these systems.

References in corpus (10)

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Cited by in corpus (13)

• Fundamental Optical Processes in Armchair Carbon Nanotubes
• Observation of Electronic Raman Scattering in Metallic Carbon Nanotubes
• Resonant Raman Spectroscopy of Armchair Carbon Nanotubes: Absence of "Metallic" Signature
• Observation of drastic electronic structure change in one-dimensional moiré crystals
• Excitonic Rayleigh scattering spectra of metallic single-walled carbon nanotubes
• High energetic excitons in carbon nanotubes directly probe charge-carriers
• In situ Characterization of Nanoparticles Using Rayleigh Scattering
• Tunable electronic correlation effects in nanotube-light interactions
• Super-localization of excitons in carbon nanotubes at cryogenic temperature
• A comprehensive model of the optical spectra of carbon nanotubes on substrate by polarized microscopy
• Universal non-resonant absorption in carbon nanotubes
• Exciton-phonon Bound Complex in Single-walled Carbon Nanotubes Revealed by High-field Magneto-optical Spectroscopy
• Uniform Peak Optical Conductivity in Single-Walled Carbon Nanotubes