Optical dichroism in nanotubes

Abstract

Utilizing the line-group symmetry of single-wall nanotubes, we have assigned their electron-energy bands by the symmetry-based quantum numbers. The selection rules for optical absorption are presented in terms of these quantum numbers. Different interband transitions become allowed as the polarization of incident light is varied, and we predict a substantial optical dichroism. We propose how to observe this effect in experiments on a single nanotube, and how it can be used to control quantum transport in nanotubes to obtain information about the structure.

4 pages, 3 fiures, to appear in Phy. Rev. B

References in corpus (2)

• Disorder, pseudospins, and backscattering in carbon nanotubes
• Full Symmetry of Single- and Multi-wall Nanotubes

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• Theory of a Carbon-Nanotube Polarization Switch
• Cylindrical quantum wires with hydrogen-bonded materials
• Intrinsic process for upconversion photoluminescence via $K$-momentum phonon coupling in carbon nanotubes