Exciton Hierarchies in Gapped Carbon Nanotubes

Details Exciton Hierarchies in Gapped Carbon Nanotubes Exciton Hierarchies in Gapped Carbon Nanotubes

2010-07-27

arxiv.org/abs/1007.4773v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 4 figures

Scientific paper

We present evidence that the strong electron-electron interactions in gapped carbon nanotubes lead to finite hierarchies of excitons within a given nanotube subband. We study these hierarchies by employing a field theoretic reduction of the gapped carbon nanotube permitting electron-electron interactions to be treated exactly. We analyze this reduction by employing a Wilsonian-like numerical renormalization group. We are so able to determine the gap ratios of the one-photon excitons as a function of the effective strength of interactions. We also determine within the same subband the gaps of the two-photon excitons, the single particle gaps, as well as a subset of the dark excitons. The strong electron-electron interactions in addition lead to strongly renormalized dispersion relations where the consequences of spin-charge separation can be readily observed.

Affiliated with

Also associated with

No associations

Rating

Exciton Hierarchies in Gapped Carbon Nanotubes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Exciton Hierarchies in Gapped Carbon Nanotubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exciton Hierarchies in Gapped Carbon Nanotubes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-321718