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Dependence of transport through carbon nanotubes on local Coulomb potential

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arxiv cond-mat/0608086 v1 pith:A7MWW35D submitted 2006-08-03 cond-mat.mes-hall

Dependence of transport through carbon nanotubes on local Coulomb potential

classification cond-mat.mes-hall
keywords nanotubescarboncoulomblocalobservepotentialtransportchanging
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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In this paper, we present the results of helium temperature transport measurements through carbon nanotubes using an AFM conductive tip as a mobile gate. In semiconducting nanotubes we observe shifting of the conductance peaks with changing of the AFM tip position. This result can be explained with a particle in the box quantum model. In high quality metallic nanotubes we observe that the local Coulomb potential does not destroy the fourfold degeneracy of the energy levels.

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