Superconducting Composition (IMAGE) Naval Research Laboratory Caption Superconducting composition where neither long-range magnetism nor structural distortions are observed corresponds to twin domains, which are small and their boundaries are dynamic. Credit Naval Research Laboratory 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.