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}.

arXiv commentupdated to published version

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Cited by in corpus (8)

• Two-stage Kondo effect in side-coupled quantum dots: Renormalized perturbative scaling theory and Numerical Renormalization Group analysis
• Resonant and Kondo tunneling through molecular magnets
• Transport through a Kondo quantum dot: Functional RG approach
• Kondo effects and shot noise enhancement in a laterally coupled double quantum dot
• Electron transport in the four-lead two-impurity Kondo model: Nonequilibrium perturbation theory with almost degenerate levels
• Nonequilibrium transport properties of a double quantum dot in the Kondo regime
• Enhanced spin injection efficiency in a four-terminal double quantum dot system
• Non-equilibrium Scaling Properties of a Double Quantum Dot System: Comparison between Perturbative Renormalization Group and Flow Equation Approach