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Heavy-fermion superconductivity in CeCoIn5at 2.3 K

Journal of Physics Condensed Matter · 2001 · Vol. 13(17) · pp. L337–L342

C. Petrović✉(National High Magnetic Field Laboratory)P. G. Pagliuso(Los Alamos National Laboratory)M. F. Hundley(Los Alamos National Laboratory)R. Movshovich(Los Alamos National Laboratory)J. L. Sarrao(Los Alamos National Laboratory)J. D. Thompson(Los Alamos National Laboratory)Z. Fisk(Florida State University)P. Monthoux(University of Cambridge)

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Abstract

We report the observation of heavy-fermion superconducitivity in CeCoIn5 at Tc =2.3 K. When compared to the pressure-induced Tc of its cubic relative CeIn3 (Tc ~200 mK), the Tc of CeCoIn5 is remarkably high. We suggest that this difference may arise from magnetically mediated superconductivity in the layered crystal structure of CeCoIn5 .

Rare-earth and actinide compounds Iron-based superconductors research Magnetic Properties of AlloysHeavy fermion superconductorSuperconductivityHeavy fermionCondensed matter physicsCrystal structurePhysicsMaterials scienceChemistryCrystallography

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Quantum criticality in heavy-fermion metals