Non-Nearest-Neighbor Jumps in 2D Diffusion: Pd on W(110)

Sang Mun Oh, Seong Jin Koh, Kentaro Kyuno, Gert Ehrlich

研究成果: Article

5 引用 (Scopus)

抜粋

A variety of jumps has in the past been identified in diffusion of atoms on 1D channeled surfaces. To establish the jump processes important in diffusion on a 2D surface, the movement of individual Pd atoms has been examined on W(110). From the distribution of displacements of Pd at high temperatures, double jumps are found along the close-packed [Formula presented]. For the first time, sizable differences are also observed between the mean-square displacements along [Formula presented] and [Formula presented], which demonstrate unexpected contributions from jumps along [Formula presented], but not along [Formula presented]. These jumps proceed over activation barriers higher than for single jumps, under conditions predicted from previous work with Pd on the channeled W(211).

元の言語English
ページ数1
ジャーナルPhysical Review Letters
88
発行部数23
DOI
出版物ステータスPublished - 2002 1 1
外部発表Yes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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