Nonequilibrium charge transport in an interacting open system: two-particle resonance and current asymmetry

Details Nonequilibrium charge transport in an interacting open system: two-particle resonance and current asymmetry Nonequilibrium charge transport in an interacting open system: two-particle resonance and current asymmetry

2009-03-28

arxiv.org/abs/0903.4940v2

Phys. Rev. B 80, 075302 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures; made some major changes -- this is the published version

Scientific paper

We use Lippman-Schwinger scattering theory to study nonequilibrium electron transport through an interacting open quantum dot. The two-particle current is evaluated exactly while we use perturbation theory to calculate the current when the leads are Fermi liquids at different chemical potentials. We find an interesting two-particle resonance induced by the interaction and obtain criteria to observe it when a small bias is applied across the dot. Finally, for a system without spatial inversion symmetry we find that the two-particle current is quite different depending on whether the electrons are incident from the left lead or the right lead.

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