Transport through multiply connected quantum wires

Abstract

We study transport through multiply coupled carbon nano-tubes (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 {\it 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 non-identical dots. These results can be experimentally tested.

9 pages, 7 figures

References in corpus (9)

• Quantum entanglement in carbon nanotubes
• Fabry-Perot interference and spin filtering in carbon nanotubes
• Correlated tunneling in intramolecular carbon nanotube quantum dots
• Coulomb drag shot noise in coupled Luttinger liquids
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