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

V. Krstic (1) , Rikken G.L.J.A. (1) , P. Bernier , S. Roth , M. Glerup

1 LNCMP - Laboratoire National des Champs Magnétiques Pulsés

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. n-type conduction is attributed to the presence of graphite-type nitrogen. The observed temperature dependencies of the zero-bias conductance indicate a disordered electron system with electric-dipole scattering, caused mainly by pyridine-type nitrogen atoms in the honeycomb lattice.

Domaines: Supraconductivité [cond-mat.supr-con]

V. Krstic, Rikken G.L.J.A., P. Bernier, S. Roth, M. Glerup. Nitrogen doping of metallic single-walled carbon nanotubes: n-type conduction and dipole scattering. EPL - Europhysics Letters, 2007, 77 (3), pp.37001. ⟨hal-00202864⟩