pi-Electron theory of transverse optical excitons in semiconducting single-walled carbon nanotubes

Abstract

We present a quantitative theory of optical absorption polarized transverse to the tube axes in semiconducting single-walled carbon nanotubes. Transverse optical absorption in semiconducting single-walled carbon nanotubes is to an exciton state that is strongly blueshifted, relative to the two lowest longitudinal excitons, by electron-electron interactions. The binding energy of the transverse exciton is considerably smaller than those of the longitudinal excitons. Electron-electron interactions also reduce the relative oscillator strength of the transverse optical absorption. Our theoretical results are in excellent agreement with recent experimental measurements in four chiral nanotubes.

5 pages, 3 figures. to appear in Physical Review B

References in corpus (6)

• Exciton binding energies in carbon nanotubes from two-photon photoluminescence
• Electron-electron interaction effects on optical excitations in semiconducting single-walled carbon nanotubes
• Cross-polarized optical absorption of single-walled nanotubes probed by polarized photoluminescence excitation spectroscopy
• Universal properties of quasi-one-dimensional excitons in semiconducting single-walled carbon nanotubes and $\pi$-conjugated polymers
• Quantitative calculations of the excitonic energy spectra of semiconducting single-walled carbon nanotubes within a $\pi$-electron model
• Elucidation of the electronic structure of semiconducting single-walled carbon nanotubes by electroabsorption spectroscopy

Cited by in corpus (3)

• Electron-electron interaction effects on the photophysics of metallic single-walled carbon nanotubes
• Observation of Exciton-Phonon Sideband in Individual Metallic Single-Walled Carbon Nanotubes
• Universality in the Photophysics of pi-Conjugated Polymers and Single-Walled Carbon Nanotubes