Coulomb Blockade Resonances in Quantum Wires

Details Coulomb Blockade Resonances in Quantum Wires Coulomb Blockade Resonances in Quantum Wires

1999-10-25

arxiv.org/abs/cond-mat/9910399v1

Phys. Rev. B 62, (2000) 12985

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 postscript files with figures; uses REVTeX

Scientific paper

10.1103/PhysRevB.62.12985

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.

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