Tuning the Coulomb Interaction (IMAGE) Brown University Caption Researchers have discovered a way to manipulate the repulsive force between electrons in "magic-angle" graphene, which provides new insight into how this material is able to conduct electricity with zero resistance. Credit Li lab / Brown University Usage Restrictions None License Licensed content 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.