Transconductance of a double quantum dot system in the Kondo regime

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}.

updated to published version

References in corpus (6)

• Nonequilibrium Singlet-Triplet Kondo Effect in Carbon Nanotubes
• Quantum criticality in a double quantum-dot system
• Nonequilibrium Transport through a Kondo Dot in a Magnetic Field: Perturbation Theory
• Nonequilibrium Transport through a Kondo Dot: Decoherence Effects
• Transport spectroscopy of Kondo quantum dots coupled by RKKY interaction
• Non-local Control of the Kondo Effect in a Double Quantum Dot-Quantum Wire Coupled System

Cited by in corpus (2)

• Two-stage Kondo effect in side-coupled quantum dots: Renormalized perturbative scaling theory and Numerical Renormalization Group analysis
• Electron transport in the four-lead two-impurity Kondo model: Nonequilibrium perturbation theory with almost degenerate levels