A predictive standard model for heavy electron systems

TL;DR

This paper introduces a comprehensive phenomenological model for heavy electron systems that predicts their phase behavior, emergent properties, and superconducting potential based on experimental data and key physical parameters.

Contribution

It presents a new phase diagram and a predictive framework linking microscopic interactions to macroscopic phenomena in heavy electron materials.

Findings

Replaces the Doniach phase diagram with a new model.

Describes the anomalous scaling behavior of the Kondo liquid.

Predicts superconducting transition temperatures based on microscopic parameters.

Abstract

We propose a predictive standard model for heavy electron systems based on a detailed phenomenological two-fluid description of existing experimental data. It leads to a new phase diagram that replaces the Doniach picture, describes the emergent anomalous scaling behavior of the heavy electron (Kondo) liquid measured below the lattice coherence temperature, T*, seen by many different experimental probes, that marks the onset of collective hybridization, and enables one to obtain important information on quantum criticality and the superconducting/antiferromagnetic states at low temperatures. Because T* is ~J^2\rho/2, the nearest neighbor RKKY interaction, a knowledge of the single-ion Kondo coupling, J, to the background conduction electron density of states, \rho, makes it possible to predict Kondo liquid behavior, and to estimate its maximum superconducting transition temperature in both existing and newly discovered heavy electron families.