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arXiv · 0910.0933

Engineering the Kondo and Fano effects in double quantum dots

Tie-Feng Fang·Hong-Gang Luo
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Abstract

We demonstrate delicate control over the Kondo effect and its interplay with quantum interference in an Aharonov-Bohm interferometer containing one Kondo dot and one noninteracting dot. It is shown that the Kondo resonance undergoes a dramatic evolution as the interdot tunnel coupling progressively increases. A novel triple Kondo splitting occurs from the interference between constant and Lorentzian conduction bands that cooperate in forming the Kondo singlet. The device also manifests a highly controllable Fano-Kondo effect in coherent electronic transport, and can be tuned to a regime where the coupled dots behave as decoupled dots.

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Tie-Feng Fang, Hong-Gang Luo. 2009-10-06. Engineering the Kondo and Fano effects in double quantum dots. https://doi.org/10.1103/physrevb.81.113402

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