LSCO/LCO tunnel junction (IMAGE) DOE/Brookhaven National Laboratory Caption A schematic showing the three-layered structure: superconducting lanthanum strontium copper oxide (LSCO) on the top and bottom, and insulating lanthanum copper oxide (LCO) in between. Credit Brookhaven National 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.