Multiwalled carbon nanotube: Luttinger liquid or not?

Details Multiwalled carbon nanotube: Luttinger liquid or not? Multiwalled carbon nanotube: Luttinger liquid or not?

2001-04-02

arxiv.org/abs/cond-mat/0104019v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTeX, 4 pages, 2 EPS-figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevB.64.195412

We have measured IV-curves of multiwalled carbon nanotubes using end contacts. At low voltages, the tunneling conductance obeys non-Ohmic power law, which is predicted both by the Luttinger liquid and the environment-quantum-fluctuation theories. However, at higher voltages we observe a crossover to Ohm's law with a Coulomb-blockade offset, which agrees with the environment-quantum-fluctuation theory, but cannot be explained by the Luttinger-liquid theory. From the high-voltage tunneling conductance we determine the transmission line parameters of the nanotubes.

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