Detection of interaction-induced nonlocal effects using perfectly transmitting nanostructures

Details Detection of interaction-induced nonlocal effects using perfectly transmitting nanostructures Detection of interaction-induced nonlocal effects using perfectly transmitting nanostructures

2008-03-19

arxiv.org/abs/0803.2780v1

Eur. Phys. J. B 66, 239-244 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures

Scientific paper

10.1140/epjb/e2008-00403-7

We consider one-dimensional transport through an interacting region in series with a point-like one-body scatterer. When the conductance of the interacting region is perfect, independently of the interaction strength, a nonlocal interaction effect yields a total conductance of the composed system that depends on the interaction strength and is lower than the transmission of the one-body scatterer. This qualitative nonlocal effect allows to probe the dressing cloud of an interacting system by ideal noninteracting leads. The conductance correction increases with the strength of the interaction and the reflection of the one-body scatterer (attaining relative changes >50%), and decreases with the distance between the interacting region and the one-body scatterer. Scaling laws are obtained and possible experimental realizations are suggested.

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