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arXiv · 2110.12671

Multistage Kondo effect in a multiterminal geometry: A modular quantum interferometer

D. B. Karki·Andrei I. Pavlov·Mikhail N. Kiselev
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Abstract

Quantum systems characterized by an interplay between several resonance scattering channels demonstrate very rich physics. To illustrate it we consider a multistage Kondo effect in nanodevices as a paradigmatic model for a multimode resonance scattering. We show that the channel crosstalk results in a destructive interference between the modes. This interplay can be controlled by manipulating the tunneling junctions in the multilevel and multiterminal geometry. We present a full-fledged theory of the multistage Kondo effect at the strong-coupling Fermi-liquid fixed point and discuss the influence of quantum interference effects to the quantum transport observables.

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D. B. Karki, Andrei I. Pavlov, Mikhail N. Kiselev. 2021-10-25. Multistage Kondo effect in a multiterminal geometry: A modular quantum interferometer. https://doi.org/10.1103/physrevb.105.l041410

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