Quantum critical behavior in heavy electron materials

Abstract

Quantum critical behavior in heavy electron materials is typically brought about by changes in pressure or magnetic field. In this communication, we develop a simple unified model for the combined influence of pressure and magnetic field on the effectiveness of the hybridization that plays a central role in the two-fluid description of heavy electron emergence. We show that it leads to quantum critical and delocalization lines that accord well with those measured for CeCoIn5, yields a quantitative explanation of the field and pressure induced changes in antiferromagnetic ordering and quantum critical behavior measured for YbRh2Si2, and provides a valuable framework for describing the role of magnetic fields in bringing about quantum critical behavior in other heavy electron materials.

29 pages, 6 figures, with minor corrections, submitted to PNAS

References in corpus (8)

• Multiple energy scales at a quantum critical point
• Universal Behavior in Heavy Electron Materials
• Interacting Antiferromagnetic Droplets in Quantum Critical CeCoIn_5
• Pressure Study of Quantum Criticality in CeCoIn5
• Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5
• Long range order and two-fluid behavior in heavy electron materials
• Magnetic excitations in Kondo liquid: Superconductivity and Hidden Magnetic Quantum Critical Fluctuations
• Anomalous Hall effect in heavy electron materials

Cited by in corpus (1)

• The Emergence of Superconductivity in Heavy Electron Materials