Observation of Superconductivity in Heavy-Fermion Compounds of Ce2CoIn8
  We succeeded in growing a single crystal of Ce2CoIn8 by the flux method. The results of specific heat and electrical resistivity measurements indicate that Ce2CoIn8 is a heavy-fermion superconductor below 0.4 K with an electronic specific heat coefficient gamma as large as 500 mJ/K^2mol-Ce. 
Genfu hen (1), Shigeo Ohara (1), Masato Hedo (2), Yoshiya Uwatoko (2),   Kazuya Saito (3), Michio Sorai (3), Isao Sakamoto (...