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Non-stochastic behavior of atomic surface diffusion on Cu(111) at all temperatures

J. Ferrón·L. Gómez·J. J. de Miguel·R. Miranda
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Abstract

Atomic diffusion is usually understood as a succession of random, independent displacements of an adatom over the surface's potential energy landscape. Nevertheless, an analysis of Molecular Dynamics simulations of self-diffusion on Cu(111) demonstrates the existence of different types of correlations in the atomic jumps at all temperatures. Thus, the atomic displacements cannot be correctly described in terms of a random walk model. This fact has a profound impact on the determination and interpretation of diffusion coefficients.

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J. Ferrón, L. Gómez, J. J. de Miguel, R. Miranda. 2004-03-22. Non-stochastic behavior of atomic surface diffusion on Cu(111) at all temperatures. https://doi.org/10.1103/physrevlett.93.166107

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