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Superconductivity and Quantum Criticality in CeCoIn_5

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arxiv cond-mat/0202251 v2 pith:W4VNVSLQ submitted 2002-02-14 cond-mat.str-el cond-mat.supr-con

classification cond-mat.str-elcond-mat.supr-con
keywords cecoinapproxconnectionconstructedcriticalitycrossovercrystalcuprate
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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