Spin configurations of carbon nanotube in a nonuniform external potential

Preprint

4 November 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9911042

Abstract

We study, theoretically, the ground state spin of a carbon nanotube in the presence of an external potential. We find that when the external potential is applied to a part of the nanotube, its variation changes the single electron spectrum significantly. This, in combination with Coulomb repulsion and the symmetry properties of a finite length armchair nanotube induces spin flips in the ground state when the external potential is varied. We discuss the possible application of our theory to recent measurements of Coulomb blocked peaks and their dependence on a weak magnetic field in armchair carbon nanotubes.

Keywords

SPIN CONFIGURATIONS
NONUNIFORM EXTERNAL
EXTERNAL POTENTIAL
CARBON NANOTUBE
GROUND STATE
STATE SPIN
NANOTUBE
ARMCHAIR
COULOMB

All Related Versions

Version 1, 1999-11-04, ArXiv
Published version: Physical Review Letters, 85 (2), 365.

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