Theoretical Scanning Tunneling Microscopy Image (IMAGE) Naval Research Laboratory Caption This is a theoretical scanning tunneling microscopy image of the magnetic Si(553)-Au surface with coexisting threefold and twofold ripples. 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.