We have prepared Ca-intercalated multilayer epitaxial graphene films on silicon carbide and
observed superconductivity in them with both magnetic and transport measurements.
Superconducting transition has been detected at temperature up to 7 K in Ca-intercalated
epitaxial graphene with the thickness down to 10 layers grown on both Si-face and C-face of
silicon carbide. The result demonstrates intercalated epitaxial graphene as a good platform
to study graphene-based superconductivity.