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

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.

arXiv comment5 pages, 3 figures

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Cited by in corpus (15)

• Density-operator approaches to transport through interacting quantum dots: Simplifications in fourth-order perturbation theory
• Linear and nonlinear transport across carbon nanotube quantum dots
• Spin transport across carbon nanotube quantum dots
• Theory of shot noise in single-walled metallic carbon nanotubes weakly coupled to nonmagnetic and ferromagnetic leads
• The spectrum of interacting metallic carbon nanotubes: Exchange effects and universality
• Transport through single-wall metallic carbon nanotubes in the cotunneling regime
• The low energy spectrum of finite size metallic SWNTs
• Valley coupling in finite-length metallic single-wall carbon nanotubes
• Sources of negative tunneling magneto-resistance in multilevel quantum dots with ferromagnetic contacts
• Spectrum and Franck-Condon factors of interacting suspended single-wall carbon nanotubes
• Vibration induced memory effects and switching in ac-driven molecular nanojunctions
• Linear conductance of an interacting carbon nanotube ring
• Transport properties of double-walled carbon nanotube quantum dots
• Spin-dependent transport through interacting graphene armchair nanoribbons
• Graphene armchair nanoribbon single-electron transistors: The peculiar influence of end states