Abstract

Abstract Current models of the processes preceding nucleation and epitaxial growth of metal thin films on metallic substrates are reviewed briefly, with particular reference to field emission and field ion microscope studies of metallic adsorbates on tungsten. It is concluded that many aspects of the phenomena of pseudomorphism, and of crystal nucleation at high adsorbate coverages, can be understood in terms of the structural features of the substrate surface and the strength of the adsorbate-substrate interaction.

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