Morphological Symmetry Breaking During Epitaxial Growth at Grazing Incidence

Physics – Condensed Matter – Materials Science

Scientific paper

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4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.84.3895

It is shown that, in submonolayer growth at off-normal incidence, even much less than one percent of transfer from the condensation energy of the deposited atoms into adatom motion is sufficient to induce a net adatom current from the illuminated edge of a two-dimensional island to the other edges, thereby breaking the island symmetry. Such a symmetry breaking phenomenon is most pronounced for deposition at grazing incidence. Comparison between our theoretical predictions and existing experimental results confirms the general validity of the model.

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