Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots

Haruka Oguchi; Nobuhiko Taniguchi

doi:10.1143/jpsj.78.083711

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arXiv · 0811.1439

Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots

Haruka Oguchi·Nobuhiko Taniguchi

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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.

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Haruka Oguchi, Nobuhiko Taniguchi. 2009-10-02. Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots. https://doi.org/10.1143/jpsj.78.083711

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