Nitrogen doping of metallic single-walled carbon nanotubes: n-type conduction and dipole scattering

Details Nitrogen doping of metallic single-walled carbon nanotubes: n-type conduction and dipole scattering Nitrogen doping of metallic single-walled carbon nanotubes: n-type conduction and dipole scattering

2006-01-23

arxiv.org/abs/cond-mat/0601513v1

Physics

Condensed Matter

Materials Science

16 pages

Scientific paper

10.1209/0295-5075/77/37001

The charge transport properties of individual, metallic nitrogen doped, single-walled carbon nanotubes are investigated. It is demonstrated that n-type conduction can be achieved by nitrogen doping. Evidence was obtained by appealing to electric-field effect measurements at ambient condition. The observed temperature dependencies of the zero-bias conductance indicate a disordered electron system with electric-dipole scattering, caused mainly by the pyridine-type nitrogen atoms in the honeycomb lattice. These results illustrate the possibility of creating all-metallic molecular devices, in which the charge carrier type can be controlled.

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