Superconducting Graphene Layers (image) DOE/SLAC National Accelerator Laboratory Caption Adding calcium atoms (orange spheres) between graphene planes (blue honeycomb) creates a superconducting material called CaC6. Now a study at SLAC has shown for the first time that graphene is a key player in this superconductivity: Electrons scatter back and forth between the graphene and calcium layers, interact with natural vibrations in the material's atomic structure and pair up to conduct electricity without resistance. Credit Greg Stewart/SLAC Usage Restrictions Please, credit. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.