Abstract
We report a theoretical investigation of the Kondo effect in a quantum dot (QD) molecule, where a larger QD supports multiple transmission channels and a smaller side-coupled QD acts as the Kondo impurity. The conductance can be completely suppressed by Kondo scattering when there is only one transport channel; but for multiple channels the conductance is partially recovered when channel level spacing is comparable to the coupling strength to the leads. A competition of bonding of states in the two QD with the Kondo resonance results to an oscillatory behavior of conductance as a function of gate voltage.
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