Graphene shows signs of superconductivity
With extra ingredients, flat form of carbon displays evidence of resistance-free current
GRAPHENE ADDITIVE Pure graphene (a) is a great conductor. But graphene doped with calcium (d) is a superconductor at low temperatures, a new study demonstrates. Trials with potassium (b) and cesium (c) showed no superconductivity.
J. Chapman et al/arXiv.org 2015