Heat Conductance Oscillations in Two Weakly Connected Charge Kondo Circuits

Thanh Thi Kim Nguyen; Mikhail Kiselev

doi:10.15625/0868-3166/17169

Author affiliations

Authors

T. K. T. Nguyen Institute of Physics, Vietnam Academy of Science and Technology
M. N. Kiselev The Abdus Salam International Centre for Theoretical Physics https://orcid.org/0000-0003-2542-3686

DOI:

https://doi.org/10.15625/0868-3166/17169

Keywords:

thermoelectric transport, thermal conductance, Kondo effect

Abstract

We revisit a model describing Seebeck effect on a weak link between two charge Kondo circuits, which has been proposed in the [Phys. Rev. B 97 (2018) 085403]. We calculate the thermoelectric coefficients in the perturbation theory assuming smallness of the reflection amplitudes of the quantum point contacts. We focus on the linear response equations for the heat conductance in three different scenarios as: Fermi liquid vs Fermi liquid, Fermi liquid vs non-Fermi liquid, non-Fermi liquid vs non-Fermi liquid. The oscillations of the heat conductance as a function of the gate voltage of each quantum dot are analysed in both Fermi liquid and non-Fermi liquid regimes. We discuss possible experimental realizations of the model to observe the signatures of the non-Fermi liquid behaviour in the heat conductance measurements.

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