Thermoelectric transport across a tunnel contact between two charge Kondo circuits: beyond perturbation theory
Abstract: Following a theoretical proposal on multi-impurity charge Kondo circuits [T. K. T. Nguyen and M. N. Kiselev, Phys. Rev. B {\bf 97}, 085403 (2018)] and the experimental breakthrough in fabrication of the two-site Kondo simulator [W. Pouse {\it et al}, Nat. Phys. (2023)] we investigate a thermoelectric transport through a double-dot charge Kondo quantum nano-device in the strong coupling operational regime. We focus on the fingerprints of the non-Fermi liquid and its manifestation in the charge and heat quantum transport. We construct a full-fledged quantitative theory describing crossovers between different regimes of the multi-channel charge Kondo quantum circuits and discuss possible experimental realizations of the theory.
- T. K. T. Nguyen and M. N. Kiselev, Quantum Transport Through a “Charge” Kondo Circuit: Effects of Weak Repulsive Interaction in Luttinger Liquid, Commun. Phys. 30, 1 (2020).
- Z. Iftikhar, A. Anthore, A. K. Mitchell, F. D. Parmentier, U. Gennser, A. Ouerghi, A. Cavanna, C. Mora, P. Simon, and F. Pierre, Tunable quantum criticality and super-ballistic transport in a “charge” Kondo circuit, Science 360, 1315 (2018).
- There is a missing factor 2π2𝜋2\pi2 italic_π in Eq. (13) of Ref. thanh2018 , which consequently requires to put an additional prefactor 2π2𝜋2\pi2 italic_π in all formulas of thermoelectric coefficient GTsubscript𝐺𝑇G_{T}italic_G start_POSTSUBSCRIPT italic_T end_POSTSUBSCRIPT and thermopower S𝑆Sitalic_S thereafter.
- Historically, the idea of Double-Large-Dot Charge Kondo configuration has been first theoretically proposed in LeHur3 for the thermodynamic investigation of the fractional e/2𝑒2e/2italic_e / 2 charge Coulomb Blockade capacitance peaks.
Paper Prompts
Sign up for free to create and run prompts on this paper using GPT-5.
Top Community Prompts
Collections
Sign up for free to add this paper to one or more collections.