Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots

Details Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots Thermal Symmetry Crossover and Universal Behaviors in Carbon Nanotube Dots

2008-11-10

arxiv.org/abs/0811.1439v3

J. Phys. Soc. Jpn 78, 083711 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

published version; 11pages, 4 figures

Scientific paper

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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