Diagram of the Junction (IMAGE) Moscow Institute of Physics and Technology Caption This image shows: S - superconductor, I - insulating tunnel barrier, F - ferromagnet, N - normal metal, shaded area -- potential barrier arising in the superconducting zone. Credit Authors of the study 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.