Figure 7

Orbital projected density of states (DOS) for He-s,p and metallic-s,p,d states. For the system with a He atom at the MDI region of the interfacial Cu layer the (a) He-s,p (b) Cu-d and (c) Cu-s,p states are shown (we consider a Cu atom nearest to the He). The same is depicted for a system with a He atom and Cu-monovacancy at the MDI site of the interfacial Cu layer (d–f), and a He atom and Nb-monovacancy at the MDI site of the interfacial Nb layer (g–i). Fermi energy is set to zero.