Excitons in semiconductor carbon nanotubes: A momentum-space perspective

Abstract

We give an exposition of an approach toward excitons in semiconductor carbon nanotubes allowing for separation of the short-range and long-range parts of the electron–hole Coulomb interaction. The approach is applied to account for the exciton fine structure and excitonic effects in optical absorption. It is shown that the energy positions of the Eii optical transitions with i>2 are strongly affected by the short-range part of the electron–hole Coulomb interaction.