G.6
Log Number: 68
Abstract Submitted to the NT-99-Logo NANOTUBE-99 Workshop:

Fractional quantum conductance of carbon nanotubes

S. Sanvito 1, C.J. Lambert 1, Y.-K. Kwon 2, D. Tománek 2

1School of Physics and Chemistry, Lancaster University, Lancaster, LA1 4YB, UK
2 Department of Physics and Astronomy and Center for Fundamental Materials Research
Michigan State University, East Lansing, MI 48824-1116

Contact e-mail: sanvito@dera.gov.uk

Using a scattering technique based on the Landauer-Buttiker formalism, we calculate the 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. Our results provide a natural explanation for the unexpected integer and non-integer conductance values observed for multi-wall nanotubes.

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