Presence and absence of magnetism in thin Ni films

We calculate the magnetization of Ni films, with thicknesses from one to four atomic layers, on Cu(100) and Cu(111) substrates. The substrate acts to suppress the Ni magnetization; on Cu(111) only, results are consistent with a magnetically "dead" monolayer Ni film. The effect of substrate composition and orientation on film magnetization is discussed. We thus explain disparate experimental results.