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

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.

9 pages, 5 figures

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• Angular Position of Nodes in the Superconducting Gap of Quasi-2D Heavy-Fermion Superconductor CeCoIn_5
• A New Heavy-Fermion Superconductor CeIrIn5: Relative of the Cuprates?

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