Discovery of high-Chern-number and high-temperature Chern insulator states: to information highway

(Science China Press) One of the most important issues in physical science and low-consumption electronics is how to realize multiple dissipationless edge channels (high Chern number) and increase the working temperature in Chern insulators. Scientists from China discovered high-Chern-number (C=2) and high-temperature (as high as 45 K) Chern insulator states in MnBi2Te4 devices, which can stimulate the exploration on room-temperature quantum anomalous Hall effect, and lay foundations for the gre...