Phys.org  October 10, 2022 An international team of researchers (Austria, the Netherlands, USA – Los Alamos National Laboratory, Rice University) used a special material made of cerium, bismuth, and palladium to demonstrate that it is possible to control topological properties and even make them disappear completely at a certain point to achieve stable, robust properties that can be selectively turn on and off. This control was made possible by the internal structure of the excitations, which are responsible for charge transport: They carry not only electric charge, but also a magnetic moment—and this makes it possible to switch them through […]