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Transconductance of a double quantum dot system in the Kondo regime

V. Koerting·P. Wölfle·J. Paaske
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Abstract

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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V. Koerting, P. Wölfle, J. Paaske. 2007-08-06. Transconductance of a double quantum dot system in the Kondo regime. https://doi.org/10.1103/physrevlett.99.036807

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