3D quantum Hall Eeffect (IMAGE) Singapore University of Technology and Design Caption An illustration of the 3D quantum Hall effect. Under enhanced interaction effects, the electrons form a special charge density wave along the applied magnetic field. The interior becomes insulating, while the conduction is through the surface of the material. Credit Wang Guoyan & He Cong 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.