Phys. Rev. Lett. 64, 3143–3146 (1990)Surface self-diffusion on Pt(001) by an atomic exchange mechanismSee Also: Erratum Received 29 March 1990; published in the issue dated 25 June 1990 Field-ion microscopy has been used to map the surface sites visited by an individual Pt adatom migrating at 175 K on the Pt(001) plane and to determine its activation energy for surface diffusion. Atomic displacements are found to occur only in the [100] or [010] directions. A surprisingly low activation energy of 0.47 eV is measured. These results are consistent with a model in which the diffusion occurs by an adatom-substrate exchange mechanism. This mechanism is predicted theoretically for self-diffusion on Al(001). © 1990 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.64.3143
DOI:
10.1103/PhysRevLett.64.3143
PACS:
61.16.Fk, 66.30.Fq, 68.35.Fx
See AlsoErratum: G. L. Kellogg and Peter J. Feibelman, Surface Self-Diffusion on Pt(001) by an Atomic Exchange Mechanism, Phys. Rev. Lett. 65, 939 (1990). |
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