Engineering the Kondo and Fano effects in double quantum dots

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.

5 pages, 4 figures

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Cited by in corpus (8)

• Origins of conductance anomalies in a p-type GaAs quantum point contact
• Projective Truncation Approximation for Equations of Motion of Two-Time Green's Functions
• Manipulability of the Kondo effect in a T-shaped triple-quantum-dot structure
• Fano-Kondo resonance versus Kondo plateau in an Aharonov-Bohm ring with an embedded quantum dot
• Transmission across non-Hermitian $\mathcal{P}\mathcal{T}$-symmetric quantum dots and ladders
• Nonequilibrium transport properties of a double quantum dot in the Kondo regime
• Magnetic flux tuning of Fano-Kondo interplay in a parallel double quantum dot system
• Dissipation- versus Chaos-Induced Relaxation in Non-Markovian Quantum Many-Body Systems