Abstract
A theory is developed for the time variation of the work function during the growth of thin epitaxial films. The theory of polylayer growth of crystals and thin films and the Helmholtz equation are used to obtain expressions for the dependence of the work function change Δφ on time t in the case of homoepitaxial growth of metallic films. The oscillation of Δφ during the growth of a single monolayer is analyzed in detail. It is estimated that the maximum value of Δφ may reach 1–100 meV depending on growth conditions.
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