fig4

Figure 4. (A and B) The work functions of CoP, Co₂P and CoP/Co₂P heterostructure; (C) Bader charge and spin charge density differences of CoP/Co₂P heterostructure; (D-F) TDOS of CoP, CoP/Co₂P heterostructure and Co₂P. DOS: Density of states; TDOS: total density of states.