Journal
SURFACE SCIENCE
Volume 602, Issue 4, Pages L21-L24Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.susc.2007.12.015
Keywords
growth; nucleation; surface defects; desorption induced by electronic transitions (DIET); atomic force microscopy; gold; alkali halides
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Gold on KBr, a prototypical system for studies of metal on insulator growth, is investigated by noncontact atomic force microscopy. It is shown that charge emitted during deposition results in the generation of surface defects via charge-induced desorption. Moreover, the defect and gold nanoparticle number densities follow a highly similar temperature dependence, suggesting that the gold growth is dominated by nucleation at the defects. The defects created at elevated temperatures are monolayer-deep rectangular pits, while those created at room temperature have an irregular structure. (C) 2007 Elsevier B.V. All rights reserved.
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