Self-Diffusion Along Step-Bottoms on Pt(111) [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 42 pages : digital, PDF file
Additional Creators:: Sandia National Laboratories, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

First-principles total energies of periodic vicinals are used to estimate barriers for Pt-adatom diffusion along straight and kinked steps on Pt(111), and around a corner where straight steps intersect. In all cases studied, hopping diffusion has a lower barrier than concerted substitution. In conflict with simulations of dendritic Pt island formation on Pt(111), hopping from a corner site to a step whose riser is a (111)-micro facet is predicted to be more facile than to one whose riser is a (100).

Report Numbers:

E 1.99:sand99-0845j
sand99-0845j

Subject(s):

Materials Science

Other Subject(s):

Note:

Published through SciTech Connect.
04/05/1999.
"sand99-0845j"
Physical Review B FT
Feibelman, P.J.

Funding Information:

AC04-94AL85000

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