Figure 4

(a) Wave functions indicating the inversion of two localized states during the transition from 5/7(S) to 5/7(M). Wave functions enclosed by the orange and purple boxes represent the Ga 4sσ bonding state and N 2pσ* antibonding state, respectively. (b) Surface states in the (10\(\overline{1}\)0) surface, where the surface states with N 2p character were occupied.