Weyl-Kondo semimetal (IMAGE) Rice University Caption Photograph of a single crystal of a nonmagnetic topological material of cerium, bismuth and palladium known as a Weyl-Kondo semimetal that physicists at Vienna University of Technology used to measure the Hall effect -- a characteristic change in the way electricity is conducted in the presence of a magnetic field -- with no magnetic field applied. Credit Photo by S. Dzsaber/TU Wien Usage Restrictions Must credit: "S. Dzsaber/TU Wien" 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.