Andrea Secchi, Massimo Rontani
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 may be comparable to those induced by spin-orbit interaction and are nearly independent of the chiral angle.
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http://arxiv.org/abs/1306.3502
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