Superconducting Graphene: the conspiracy of doping and strain
Department of Materials Science and Engineering,University of Utah, Salt Lake City, Utah 84112, USA(Dated: August 13, 2013)Graphene has exhibited a wealth of fascinating properties, but is also known not to be a supercon-ductor. Remarkably, we show that graphene can be made a conventional Bardeen-Cooper-Schrieﬀersuperconductor by the combined eﬀect of charge doping and tensile strain. While the eﬀect of dopingis obvious to enlarge Fermi surface, the eﬀect of strain is profound to greatly increase the electron-phonon coupling. At the experimental accessible doping (∼ 4 ×10