Using thermal energy helium atom scattering it is found that deposition of cobalt on the $\mathrm{Cu}\left(110\right)-(2\times 1)\mathrm{O}$ surface at 350 K leads to layer-by-layer growth of a pseudomorphic fcc(110) Co film. Auger electron spectroscopy reveals that the surface is O terminated even after deposition of more than 20 monolayer Co. A $(3\times 1)$ superstructure is observed in the topmost Co layer, suggesting that the Co(110) phase is stabilized by an oxygen induced surface reconstruction.

• Received 22 October 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.2877