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

Roy, Dibyendu and Soori, Abhiram and Sen, Diptiman and Dhar, Abhishek (2009) Nonequilibrium charge transport in an interacting open system: Two-particle resonance and current asymmetry. In: Physical Review B: Condensed Matter and Materials Physics, 80 (7).

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Abstract

We use the 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 or the right lead.

Item Type:	Journal Article
Publication:	Physical Review B: Condensed Matter and Materials Physics
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	15 Dec 2009 11:10
Last Modified:	19 Sep 2010 05:46
URI:	http://eprints.iisc.ac.in/id/eprint/23475

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