Transconductance of a double quantum dot system in the Kondo regime

Details Transconductance of a double quantum dot system in the Kondo regime Transconductance of a double quantum dot system in the Kondo regime

2006-12-21

arxiv.org/abs/cond-mat/0612566v2

Phys. Rev. Lett. 99, 036807 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

updated to published version

Scientific paper

10.1103/PhysRevLett.99.036807

We consider a lateral double-dot system in the Coulomb blockade regime with a single spin-1/2 on each dot, mutually coupled by an anti-ferromagnetic exchange interaction. Each of the two dots is contacted by two leads. We demonstrate that the voltage across one of the dots will have a profound influence on the current passing through the other dot. Using Poor Man's scaling, we find that the Kondo-effect can lead to a strong enhancement of this {\it transconductance}.

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