Universal Description of Granular Metals at Low Temperatures: Granular Fermi Liquid

TL;DR

This paper introduces a unified theoretical model that explains the universal low-temperature electrical behavior of granular metals, aligning with that of disordered systems, and simplifies understanding their conductive properties.

Contribution

The paper provides a universal theoretical framework for granular metals at low temperatures, linking their behavior to that of disordered conductors, and offers a straightforward derivation of their properties.

Findings

Low-temperature conductivity is universal across granular and disordered metals.

The model aligns granular metals' behavior with homogeneously disordered systems.

A simple derivation of low-temperature characteristics of disordered conductors is achieved.

Abstract

We present a unified description of the low temperature phase of granular metals that reveals a striking generality of the low temperature behaviors. Our model explains the universality of the low-temperature conductivity that coincides exactly with that of the homogeneously disordered systems and enables a straightforward derivation of low temperature characteristics of disordered conductors.