Programme

P.36 -- Poster, VCTP-48

Date: Thursday, 3 August 2023

Time: 08:30 - 10:00

Thermoelectric transport on a weak link between two charge Kondo circuits

T. H. Do (1), T. B. Cao (2), T. K. T. Nguyen (2), H.Q. Nguyen (2), M. N. Kiselev (3)

(1) Nguyen Viet Xuan high school, Dai-Dong, Vinh-Tuong, Vinh-Phuc, Vietnam (2) Institute of Physics, Vietnam Academy of Science and Technology , 10 Dao Tan, Cong-Vi, Ba-Dinh, Hanoi, Vietnam (3) The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, I-34151, Trieste, Italy

We revisited the setup which has been proposed in Phys. Rev. B 97, 085403 (2018). The generalization of the ideas of Flensberg-Matveev-Furusaki theory is adopted to describe a Integer Quantum Hall charge Kondo circuit. The design of a weak link between two charge Kondo circuits can be a weak coupling between the Fermi and non-Fermi liquid states. We compute the thermoelectric coefficients in the perturbation theory assuming smallness of the reflection amplitudes of the quantum point contacts. The oscillations of the thermoelectric coefficients as functions of the gate voltage of each quantum dot are analyzed in three different scenarios as: Fermi liquid vs Fermi liquid, Fermi liquid vs non-Fermi liquid, non-Fermi liquid vs non-Fermi liquid. Although the Fermi liquid behavior is more prominent than the non-Fermi liquid one, we can find possible experimental realizations of the model to observe the signatures of the non-Fermi liquid behavior in the thermoelectric transport measurements.

Presenter: Nguyen Hong Quang