Researchers from the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science (CFEL) in Hamburg and UNIST (Ulsan National Institute of Science and Technology) in Korea used a state-of-the-art quantum dynamical method to calculate the quantum of spin or charge Hall conductivity, by which they successfully classified intrinsic topological natures of materials. Their work has been published in PNAS. [more]