Science and Mathematics Faculty Publications

Document Type

Article

Publication Date

9-2008

Journal Title

Applied Physics Letters

Volume

93

Issue

12

First Page

123104

DOI

10.1063/1.2990624

Abstract

We report in situ transmission electron microscopy dynamic observations of the early stage oxidation of Cu(111) surfaces at ∼450 °C, which show that the Cu2O filmmorphology evolves with continued oxidation from initially ramified islands to irregularly connected clusters. The geometrical features of these noncompact oxidefilms are analyzed in terms of the scaling theory of percolation. We show by kinetic Monte Carlo simulations that the percolating oxide film growth is related to a mechanism of neighbor-dependent site percolation.

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