chiral interface state close up (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Scanning tunneling microscopy image of a chiral interface state wavefunction (bright stripe) in a quantum anomalous Hall insulator made from twisted monolayer-bilayer graphene. Credit Canxun Zhang/Berkeley Lab Usage Restrictions Credit Canxun Zhang/Berkeley Lab License Original 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.