Superconductivity and Quantum Criticality in CeCoIn_5

Abstract

Electrical resistivity measurements on a single crystal of the heavy-fermion superconductor CeCoIn_5 at pressures to 4.2 GPa reveal a strong crossover in transport properties near P^* \approx 1.6 GPa, where T_c is a maximum. The temperature-pressure phase diagram constructed from these data provides a natural connection to cuprate physics, including the possible existence of a pseudogap.

4 pages, 4 figures

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• In Praise of Unstable Fixed Points: The Way Things Actually Work

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