Correlation effects on electronic transport through dots and wires

Details Correlation effects on electronic transport through dots and wires Correlation effects on electronic transport through dots and wires

2006-04-12

arxiv.org/abs/cond-mat/0604302v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

to appear in "Advances in Solid State Physics" Volume 46, Ed. R. Haug (Springer, 2006)

Scientific paper

We investigate how two-particle interactions affect the electronic transport through meso- and nanoscopic systems of two different types: quantum dots with local Coulomb correlations and quasi one-dimensional quantum wires of interacting electrons. A recently developed functional renormalization group scheme is used that allows to investigate systems of complex geometry. Considering simple setups we show that the method includes the essential aspects of Luttinger liquid physics (one-dimensional wires) as well as of the physics of local correlations, with the Kondo effect being an important example. For more complex systems of coupled dots and Y-junctions of interacting wires we find surprising new correlation effects.

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