Response of the Heavy-Fermion Superconductor CeCoIn$_5$ to Pressure: Roles of Dimensionality and Proximity to a Quantum-Critical Point

E. Lengyel; F. Steglich; G. Sparn; J. D. Thompson; J. L. Sarrao; M. Nicklas; P. G. Pagliuso; R. Borth; V. A. Sidorov

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Response of the Heavy-Fermion Superconductor CeCoIn$_5$ to Pressure: Roles of Dimensionality and Proximity to a Quantum-Critical Point

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arxiv cond-mat/0108319 v2 pith:7QE7GNGL submitted 2001-08-20 cond-mat.str-el

M. Nicklas , R. Borth , E. Lengyel , P. G. Pagliuso , J. L. Sarrao , V. A. Sidorov , G. Sparn , F. Steglich

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J. D. Thompson

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keywords cecoinpressureheavy-fermionpointproximityquantum-criticalsuperconductoranisotropic

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abstract

We report measurements of the pressure-dependent superconducting transition temperature $T_c$ and electrical resistivity of the heavy-fermion compound CeCoIn$_5$. Pressure moves CeCoIn$_5$ away from its proximity to a quantum-critical point at atmospheric pressure. Experimental results are qualitatively consistent with theoretical predictions for strong-coupled, d-wave superconductivity in an anisotropic 3D superconductor.

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