Non-Fermi liquid behavior and Griffiths phase in {\it f}-electron compounds

TL;DR

This paper investigates how disorder, RKKY, and Kondo interactions lead to non-Fermi liquid behavior in f-electron alloys, attributing it to a Griffiths phase near quantum criticality, and suggests experiments for validation.

Contribution

It introduces the concept that a Griffiths phase explains non-Fermi liquid behavior in f-electron compounds, unifying various experimental observations.

Findings

Non-Fermi liquid behavior linked to Griffiths phase

Disorder and interactions induce quantum criticality

Proposed experiments to test the Griffiths phase hypothesis

Abstract

We study the interplay among disorder, RKKY and Kondo interactions in {\it f}-electron alloys. We argue that the non-Fermi liquid behavior observed in these systems is due to the existence of a Griffiths phase close to a quantum critical point. The existence of this phase provides a unified picture of a large class of materials. We also propose new experiments that can test these ideas.