Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots

Abstract

Motivated by recent experiments on electronic transport through a carbon nanotube, we investigate the role of the intra- and inter-orbital Coulomb interactions on the temperature evolution of the conductance. It is shown that small amount (~10%) of asymmetry between these Coulomb repulsions substantially deforms the conductance profile at finite temperature, particularly around half-filling. The nature of such thermal symmetry crossover is elucidated.

published version; 11pages, 4 figures

References in corpus (9)

• Orbital Kondo effect in carbon nanotubes
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Cited by in corpus (4)

• Kondo effects and shot noise enhancement in a laterally coupled double quantum dot
• Magnetic flux tuning of Fano-Kondo interplay in a parallel double quantum dot system
• Universal conductance enhancement and reduction of the two-orbital Kondo effect
• Spin Current Generation as a Nonequilibrium Kondo Effect in a Spin-orbit Mesoscopic Interferometer