Using first-principles calculation methods, we study the possibility of realizing quantum anomalous Hall effect in graphene from stable 3\textit{ d}-atomic adsorption via charge-compensated \textit{ n}-\textit{ p} codoping scheme. As concrete examples, we show that long-range ferromagnetism can be established by codoping 3\textit{ d} transition metal and boron atoms, but only the Ni codopants can open up a global bulk gap to harbour the quantum anomalous Hall effect. Our estimated ferromagnetic Curie transition temperature can reach over 10 Kelvin for various codoping concentrations.
Categories: cond-mat.mtrl-sci