Inter-valley scattering induced by Coulomb interaction and disorder in carbon-nanotube quantum dots
Mesoscale and Nanoscale Physics
2013-09-06 v2
Abstract
We develop a theory of inter-valley Coulomb scattering in semiconducting carbon-nanotube quantum dots, taking into account the effects of curvature and chirality. Starting from the effective-mass description of single-particle states, we study the two-electron system by fully including Coulomb interaction, spin-orbit coupling, and short-range disorder. We find that the energy level splittings associated with inter-valley scattering are nearly independent of the chiral angle and, while smaller than those due to spin-orbit interaction, large enough to be measurable.
Keywords
Cite
@article{arxiv.1306.3502,
title = {Inter-valley scattering induced by Coulomb interaction and disorder in carbon-nanotube quantum dots},
author = {Andrea Secchi and Massimo Rontani},
journal= {arXiv preprint arXiv:1306.3502},
year = {2013}
}
Comments
Revised version with a largely expanded discussion of experiments. To appear in Physical Review B