Fractional quantum conductance in carbon nanotubes

Details Fractional quantum conductance in carbon nanotubes Fractional quantum conductance in carbon nanotubes

1999-08-10

arxiv.org/abs/cond-mat/9908154v1

Phys. Rev. Lett. 84, 1974 (2000).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 5 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.84.1974

Using a scattering technique based on a parametrized linear combination of atomic orbitals Hamiltonian, we calculate the ballistic quantum conductance of multi-wall carbon nanotubes. We find that inter-wall interactions not only block some of the quantum conductance channels, but also redistribute the current non-uniformly over the individual tubes across the structure. Our results provide a natural explanation for the unexpected integer and non-integer conductance values reported for multi-wall nanotubes in Ref.[S. Frank, P. Poncharal, Z.L. Wang, and W. A. de Heer, Science 280, 1744 (1998)]

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