Heavy Fermions and Quantum Phase Transitions

Abstract

Quantum phase transitions arise in many-body systems due to competing interactions that promote rivaling ground states. Recent years have seen the identification of continuous quantum phase transitions, or quantum critical points, in a host of antiferromagnetic heavy-fermion compounds. Studies of the interplay between the various effects have revealed new classes of quantum critical points, and are uncovering a plethora of new quantum phases. At the same time, quantum criticality has provided fresh insights into the electronic, magnetic, and superconducting properties of the heavy-fermion metals. We review these developments, discuss the open issues, and outline some directions for future research.

review article, 26 pages, 4 figures

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Cited by in corpus (4)

• Fermi surface topology of the two-dimensional Kondo lattice model: a dynamical cluster approximation approach
• Coexistence of bulk superconductivity and charge density wave in CuxZrTe3
• Entropy accumulation near quantum critical points: effects beyond hyperscaling
• Interplay of quantum and classical fluctuations near quantum critical points