Kondo physics in transport through a quantum dot with Luttinger liquid leads

TL;DR

This paper investigates how Kondo and Luttinger liquid effects influence the conductance through a quantum dot with one-dimensional leads, revealing a combined line shape under realistic conditions.

Contribution

It demonstrates the interplay of Kondo and Luttinger liquid physics in quantum dot transport, showing a unified resonance shape in experimentally relevant regimes.

Findings

Kondo physics causes broad conductance plateaus.

Luttinger liquid behavior results in sharp resonances.

Combined effects produce a Kondo-like line shape in realistic parameters.

Abstract

We study the gate voltage dependence of the linear conductance through a quantum dot coupled to one-dimensional leads. For interacting dot electrons but noninteracting leads Kondo physics implies broad plateau-like resonances. In the opposite case Luttinger liquid behavior leads to sharp resonances. In the presence of Kondo as well as Luttinger liquid physics and for experimentally relevant parameters, we find a line shape that resembles the one of the Kondo case.