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Non-Fermi liquid behavior in transport across carbon nanotube quantum dots

Leonhard Mayrhofer·Milena Grifoni
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Abstract

A low energy-theory for non-linear transport in finite-size single-wall carbon nanotubes, based on a microscopic model for the interacting pz electrons and successive bosonization, is presented. Due to the multiple degeneracy of the energy spectrum diagonal as well as off-diagonal (coherences) elements of the reduced density matrix contribute to the nonlinear transport. A four-electron periodicity with a characteristic ratio between adjacent peaks, as well as nonlinear transport features, in quantitative agreement with recent experiments, are predicted.

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Leonhard Mayrhofer, Milena Grifoni. 2006-06-08. Non-Fermi liquid behavior in transport across carbon nanotube quantum dots. https://doi.org/10.1103/physrevb.74.121403

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