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Heavy Fermions and Quantum Phase Transitions

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arxiv 1102.4896 v1 pith:6EI2KCA6 submitted 2011-02-24 cond-mat.str-el cond-mat.quant-gascond-mat.supr-conhep-th

Heavy Fermions and Quantum Phase Transitions

classification cond-mat.str-el cond-mat.quant-gascond-mat.supr-conhep-th
keywords quantumphasetransitionscriticalheavy-fermionpointsantiferromagneticarise
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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