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Transport through a double barrier in Large Radius Carbon Nanotubes with a transverse magnetic field

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  • S. Bellucci
  • P. Onorato

Abstract

We discuss the Luttinger Liquid behaviour of Large Radius Carbon Nanotube e.g. the Multi Wall ones (MWNT), under the action of a transverse magnetic field B. Our results imply a reduction with B in the value of the bulk critical exponent, α bulk , for the tunneling density of states, which is in agreement with that observed in transport experiments. Then, the problem of transport through a Quantum Dot formed by two intramolecular tunneling barriers along the MWNT, weakly coupled to Tomonaga-Luttinger liquids is studied, including the action of a strong transverse magnetic field B. We predict the presence of some peaks in the conductance G versus B, related to the magnetic flux quantization in the ballistic regime, at a very low temperature T, and also at higher values of T, where the Luttinger behaviour dominates. The temperature dependence of the maximum G max of the conductance peak according to the Sequential Tunneling follows a power law, G ∝T γe-1 with γ e linearly dependent on the critical exponent, α end , strongly reduced by B. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Suggested Citation

  • S. Bellucci & P. Onorato, 2006. "Transport through a double barrier in Large Radius Carbon Nanotubes with a transverse magnetic field," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 52(4), pages 469-476, August.
    • Handle: RePEc:spr:eurphb:v:52:y:2006:i:4:p:469-476
    DOI: 10.1140/epjb/e2006-00326-3
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