Atomic geometry determination of FeO(001) grown on Ag(001) by low energy electron diffraction

A low energy electron diffraction (LEED) investigation of the structure of the surface of an FeO(001) thin film grown on Ag(001) is presented. The results show that this surface has an almost bulk termination structure with a very small rumple on the first layer, which agrees with the structure found in other studies carried out on the (001) surface of oxides that have rock-salt structure. Evidences that may support a linear behaviour of the topmost layer rumple with the oxide lattice constant are also discussed.