Step-edge barriers on pt(111): An atomistic view

Kentaro Kyuno, Gert Ehrlich

研究成果: Article査読

50 被引用数 (Scopus)

抄録

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 ± 0.01eV, quite small compared with the diffusion barrier of 0.26 eV, and in sharp contrast with deductions from growth experiments.

本文言語English
ページ(範囲)5592-5595
ページ数4
ジャーナルPhysical Review Letters
81
25
DOI
出版ステータスPublished - 1998 1月 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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