Programme

P.36 -- Poster, VCTP-47

Date: Thursday, 4 August 2022

Time: 08:30 - 10:00

Open Kondo circuit as a detector for electron-electron interactions in a Luttinger Liquid

T. K. T. Nguyen, A. V. Parafilo, H. Q. Nguyen, and M. N. Kiselev

Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan, Hanoi, Vietnam

We investigate the effects of the electron-electron (e-e) interactions on quantum transport in a one dimensional system. We demonstrate it by considering the model in which a quantum dot is sandwiched between two finite quantum wires or quantum point contacts. We show that the open quantum dot can be used as an e-e interaction detector: the temperature scaling of the electric conductance is affected by the interaction in the electron gas through the Luttinger parameter g. Two limits: L<< a and L>>a are considered with L and a are the size of the Luttinger liquid wires and the quantum dot, correspondingly. We also discuss the influence of e-e interactions on the non-Fermi liquid behavior of the conductance at the two channel Kondo fixed point. Besides, our results bring back the electron interaction independent dc conductance e^2/h in the finite length quantum wires.

Presenter: Nguyễn Hồng Quang