Graphene shows signs of superconductivity

With extra ingredients, flat form of carbon displays evidence of resistance-free current

different versions of graphene

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

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