Nanowerk  December 16, 2020 In quantum anomalous Hall (QAH) insulators, electron flow is constrained to the edges, and electrons on one edge can only go in one direction and those on the other edge can only go the opposite direction. In prior studies, the QAH effect had been experimentally realized only in materials where the Chern number had a value of 1, essentially with a single two-lane highway for electrons. They observed some dissipation of current at connection points between QAH insulators and metallic electrodes, which occurs in the form of heat. However, by increasing the thickness of the QAH […]