2004/02/25 by А. Г. Петров, Alexey G. Petrov, Slava V. Rotkin
Materials Science · Physics and Astronomy · #Ballistic conduction in single-walled carbon nanotubes #Boltzmann equation #Carbon Nanotubes in Composites #Carbon nanotube #Condensed matter physics #Conductivity #Coulomb #Diffusion #Doping #Electrical resistivity and conductivity #Electron #Fermi energy #Fermi level #Graphene research and applications #Impurity #Ionized impurity scattering #Materials science #Nanotechnology #Nanotube #Optical properties of carbon nanotubes #Physics #Quantum mechanics #Scattering #Scattering rate #Semiconductor #Thermal properties of materials #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.70.035408
published as Phys. Rev. B vol. 70 (3), 035408, 2004 · 13 pages, 4 figures
arxiv created 2004/02/25 · openalex publication_date 2004/07/15 · arxiv updated 2021/07/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The theory of the remote Coulomb impurity scattering in single-wall carbon nanotubes is developed within a one-electron approximation. The Boltzmann equation is solved within the drift-diffusion model to obtain the tube conductivity. The conductivity depends on the type of the nanotube band structure (metal or semiconductor) and on the electron Fermi energy. We found that the exponential dependence of the conductivity on the Fermi energy is due to the Coulomb scattering rate having a strong dependence on the momentum transfer. We calculate intrasubband and intersubband scattering rates and present general expressions for the conductivity. Numerical results, as well as obtained analytical expressions, show that the degenerately doped semiconductor tubes may have very high mobility unless the doping level becomes too high and the intersubband transitions impede the electron transport.