An emerging global picture of heavy fermion physics

TL;DR

This paper summarizes recent advances in heavy fermion physics, highlighting new experimental insights into phase coherence, two-fluid behavior, quantum phase transitions, and material-specific properties, leading to an emerging comprehensive understanding.

Contribution

It provides a broad overview of recent experimental progress and proposes a new global perspective beyond traditional mean-field theories in heavy fermion physics.

Findings

Development of phase coherence and two-stage hybridization

Observation of two-fluid behavior and universal scaling

Insights into quantum critical superconductivity

Abstract

Recent progresses using state-of-the-art experimental techniques have motivated a number of new insights on heavy fermion physics. This article gives a brief summary of the author's research along this direction. We discuss five major topics including: (1) Development of phase coherence and two-stage hybridization; (2) Two-fluid behavior and hidden universal scaling; (3) Quantum phase transitions and fractionalized heavy fermion liquid; (4) Quantum critical superconductivity; (5) Material-specific properties. These cover the most essential parts of heavy fermion physics and lead to an emerging global picture beyond conventional theories based on mean-field or local approximations.