Superconductivity in Ca-intercalated epitaxial graphene on silicon carbide

• Published in: Applied physics letters Vol. 103; no. 6
• Main Authors: Li, Kang, Feng, Xiao, Zhang, Wenhao, Ou, Yunbo, Chen, Lianlian, He, Ke, Wang, Li-Li, Guo, Liwei, Liu, Guodong, Xue, Qi-Kun, Ma, Xucun
• Format: Journal Article
• Language: English
• Published: 05-08-2013
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.4817781

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.