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Multiwalled carbon nanotube: Luttinger liquid or not?

R. Tarkiainen·M. Ahlskog·J. Penttilä·L. Roschier·P. Hakonen·M. Paalanen·E. Sonin
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Abstract

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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R. Tarkiainen, M. Ahlskog, J. Penttilä, L. Roschier, P. Hakonen, M. Paalanen, E. Sonin. 2001-04-02. Multiwalled carbon nanotube: Luttinger liquid or not?. https://doi.org/10.1103/physrevb.64.195412

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