KINETICS OF GROWTH OF CU ON CU(001)

Helium atom beam scattering has been used to study the growth of Cu fi lms on Cu(001) surfaces for a wide range of temperatures and coverages . It is shown that this technique provides a powerful means for a deta iled structural characterization during growth of the film. Useful inf ormation on decisive kinetic parameters, such as the migration coeffic ient of adatoms, are obtained. The evolving, rough growth front for de position at low substrate temperatures is analyzed in the light of the dynamical scaling hypothesis. A growth instability is observed, which might be attributed to an asymmetry in the vertical and horizontal mo bility of deposited atoms, associated with an excess energy barrier at step edges.