Anomalous Kondo effect of indirectly coupled double quantum dots
Qing-feng Sun, Hong Guo, Yupeng Wang
Abstract
We report theoretical investigations of indirectly coupled double quantum dots (QD) side connected to an one-dimensional quantum wire. Due to quantum interference controlled by the parameter kF L, with kF the Fermi wave number of the wire and L the distance between the two QDs, distinctly different Kondo resonances are predicted depending on the range of kF L. A true bound Kondo states is found while an anomalous Kondo resonance gives rise to both reduction and enhancement of conductance.
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