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Observation of Superconductivity in Heavy-Fermion Compounds of Ce<sub>2</sub>CoIn<sub>8</sub>

Observation of Superconductivity in Heavy-Fermion Compounds of Ce<sub>2</sub>CoIn<sub>8</sub>

We succeeded in growing a single crystal of Ce 2 CoIn 8 by the flux method. The results of specific heat and electrical resistivity measurements indicate that Ce 2 CoIn 8 is a heavy-fermion superconductor below 0.4 K with an electronic specific heat coefficient γ as large as 500 mJ/K …