Coulomb Blockade Resonances in Quantum Wires
Mesoscale and Nanoscale Physics
2009-10-31 v1
Abstract
The conductance through a quantum wire of cylindrical cross section and a weak bulge is solved exactly for two electrons within the Landauer-Buettiker formalism. We show that this 'open' quantum dot exhibits spin-dependent Coulomb blockade resonances resulting in two anomalous structure on the rising edge to the first conductance plateau, one near 0.25(2e^2/h), related to a singlet resonance, and one near 0.7(2e^2/h), related to a triplet resonance. These resonances are generic and robust, occurring for other types of quantum wire and surviving to temperatures of a few degrees.
Cite
@article{arxiv.cond-mat/9910399,
title = {Coulomb Blockade Resonances in Quantum Wires},
author = {T. Rejec and A. Ramsak and J. H. Jefferson},
journal= {arXiv preprint arXiv:cond-mat/9910399},
year = {2009}
}
Comments
5 pages, 3 postscript files with figures; uses REVTeX