Journal
PHYSICAL REVIEW B
Volume 70, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.70.155420
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We study transport through multiply coupled carbon nanotubes (quantum wires) and compute the conductances through the two wires as a function of the two gate voltages g(1) and g(2) controlling the chemical potential of the electrons in the two wires. We find that there is an equilibrium cross-conductance, and we obtain its dependence on the temperature and length of the wires. The effective action of the model for the wires in the strong coupling (equivalently Coulomb interaction) limit can also be mapped to a system of capacitively coupled quantum dots. We thus also obtain the conductances for identical and nonidentical dots. These results can be experimentally tested.
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