Nagaoka Ferromagnetism (IMAGE) Delft University of Technology Caption This is an artist impression of Nagaoka ferromagnetism on the 2x2 lattice of quantum dots. Credit Sofía Navarrete and María Mondragón De la Sierra for QuTech 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.