Flow of Electrons Based on their Spin (image) University of California - Riverside Share Print E-Mail Caption Sketch shows how the thickness of the magnesium oxide interface enables a "spin reversal" in electrons traveling through the interface. The interface is depicted as a yellow wall here. Credit Kawakami lab, UC Riverside. Usage Restrictions None Share Print E-Mail 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.