Dielectric Response Near the Density-Driven Mott Transition in infinite dimensions

TL;DR

This paper investigates the dielectric response near the Mott transition in infinite dimensions using dynamical mean field theory, focusing on optimizing dielectric efficiency for potential device applications.

Contribution

It introduces the dielectric figure of merit (DFOM) for correlated systems and explores how to optimize it in transition metal oxides.

Findings

Computed the dielectric figure of merit (DFOM) near the Mott transition.

Linked Faraday rotation features to the local spectral density in the Hubbard model.

Provided insights into optimizing dielectric properties in correlated materials.

Abstract

We study the dielectric response of correlated systems which undergo a Mott transition as a function of band filling within the dynamical mean field framework. We compute the dielectric figure of merit (DFOM), which is a measure of dielectric efficiency and an important number for potential device applications. It is suggested how the DFOM can be optimized in real transition metal oxides. The structures seen in the computed Faraday rotation are explained on the basis of the underlying local spectral density of the $d=\infty$ Hubbard model.