Heavy Fermions and Quantum Phase Transitions

Details Heavy Fermions and Quantum Phase Transitions Heavy Fermions and Quantum Phase Transitions

2011-02-24

arxiv.org/abs/1102.4896v1

Science 329, 1161 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

review article, 26 pages, 4 figures

Scientific paper

10.1126/science.1191195

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.

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