Charge-transport and tunneling in single-walled carbon nanotubes

Details Charge-transport and tunneling in single-walled carbon nanotubes Charge-transport and tunneling in single-walled carbon nanotubes

2008-06-28

arxiv.org/abs/0806.4651v2

Physics

Condensed Matter

Materials Science

8 pages, 4 figures. Physical Review Letters (in press)

Scientific paper

10.1103/PhysRevLett.101.246804

We investigate experimentally the transport properties of single-walled carbon nanotube bundles as a function of temperature and applied current over broad intervals of these variables. The analysis is performed on arrays of nanotube bundles whose axes are aligned along the direction of the externally supplied bias current. The data are found consistent with a charge transport model governed by the tunnelling between metallic regions occurring through potential barriers generated by nanotubes contact areas or bundles surfaces. Based on this model and on experimental data we describe quantitatively the dependencies of the amplitude of these barriers upon bias current and temperature.

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