Effective model of the electronic Griffiths phase

TL;DR

This paper introduces a simple analytical model that explains the universal emergence of electronic Griffiths phases near disorder-driven metal-insulator transitions in correlated systems, validated through Dynamical Mean Field Theory.

Contribution

The paper develops a new effective model that accurately describes the qualitative and quantitative features of electronic Griffiths phases in disordered correlated materials.

Findings

Model captures all qualitative aspects of Griffiths phases.

Model reproduces quantitative features observed in experiments.

Validates the model using Dynamical Mean Field Theory.

Abstract

We present simple analytical arguments explaining the universal emergence of electronic Griffiths phases as precursors of disorder-driven metal-insulator transitions in correlated electronic systems. A simple effective model is constructed and solved within Dynamical Mean Field Theory. It is shown to capture all the qualitative and even quantitative aspects of such Griffiths phases.