Conductance of a quantum dot in the Kondo regime connected to dirty wires

TL;DR

This paper investigates how disorder in wires affects the conductance of a quantum dot in the Kondo regime, using quantum Monte Carlo simulations to analyze the conductance distribution.

Contribution

It provides a comprehensive analysis of conductance distribution in a disordered wire-quantum dot system within the Kondo regime, employing quantum Monte Carlo methods.

Findings

Distribution of conductance varies with disorder strength.

Kondo correlations influence conductance fluctuations.

Disorder leads to a broadening of conductance probability distribution.

Abstract

We study the transport behavior induced by a small bias voltage through a quantum dot connected to one-channel disordered wires by means of a quantum Monte Carlo method. We model the quantum dot by the Hubbard-Anderson impurity and the wires by the one-dimensional Anderson model with diagonal disorder within a length. We present a complete description of the probability distribution function of the conductance within the Kondo regime.