The Dirac half-semimetal and quantum anomalous Hall effect in two-dimensional Janus Mn2X3Y3 (X, Y = F, Cl, Br, I)

Based on first-principles density functional theory, we predict that the Janus Mn 2 X 3 Y 3 (X, Y) = F, Cl, Br, I are high Curie temperature quantum anomalous Hall insulators.