Theory of Fano-Kondo effect in quantum dot systems: temperature dependence of the Fano line shapes

TL;DR

This paper presents a theoretical study of the Fano-Kondo effect in quantum dot systems, analyzing temperature-dependent Fano line shapes using advanced numerical methods to understand their behavior at various temperatures.

Contribution

It introduces a theoretical model for the T-shaped quantum dot and investigates temperature effects on Fano line shapes using the finite temperature density matrix renormalization group method.

Findings

Fano line shapes are modified significantly at temperatures above the Kondo temperature.

Effective Fano parameters can be used to fit and analyze temperature-dependent line shape changes.

The study provides insights into the temperature dependence of quantum interference effects in quantum dots.

Abstract

The Fano-Kondo effect in zero-bias conductance is studied based on a theoretical model for the T-shaped quantum dot by the finite temperature density matrix renormalization group method. The modification of the two Fano line shapes at much higher temperatures than the Kondo temperature is also investigated by the effective Fano parameter estimated as a fitting parameter.