Step-edge barriers on Pt(111)

An atomistic view

Kentaro Kyuno, Gert Ehrlich

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The escape of platinum from Pt(111) islands has been examined in the field ion microscope to obtain a direct view of atomic events. No effective barrier to the escape of platinum clusters larger than dimers is found at step edges, but incorporation of individual adatoms is nevertheless more effective at low temperatures. From the temperature dependence of the rate of atom disappearance from Pt( 111) islands, the additional step-edge barrier is found as 0.06 ± 0.01 eV, quite small compared with the diffusion barrier of 0.26 eV, and in sharp contrast with deductions from growth experiments.

Original languageEnglish
Pages (from-to)5592-5595
Number of pages4
JournalPhysical Review Letters
Volume81
Issue number25
Publication statusPublished - 1998
Externally publishedYes

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escape
platinum
ion microscopes
deduction
adatoms
dimers
temperature dependence
atoms

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Step-edge barriers on Pt(111) : An atomistic view. / Kyuno, Kentaro; Ehrlich, Gert.

In: Physical Review Letters, Vol. 81, No. 25, 1998, p. 5592-5595.

Research output: Contribution to journalArticle

Kyuno, K & Ehrlich, G 1998, 'Step-edge barriers on Pt(111): An atomistic view', Physical Review Letters, vol. 81, no. 25, pp. 5592-5595.
Kyuno, Kentaro ; Ehrlich, Gert. / Step-edge barriers on Pt(111) : An atomistic view. In: Physical Review Letters. 1998 ; Vol. 81, No. 25. pp. 5592-5595.
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