Step-edge barriers: Truths and kinetic consequences

Kentaro Kyuno, Gert Ehrlich

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Observations of individual atoms on metal surfaces have shown that the diffusion potential at descending steps is not the simple repulsive barrier usually assumed in crystal growth. Instead, atoms may be held in asymmetric traps at step edges, and there are significant distortions of the potential near ascending steps. That the presence of step-edge traps instead of repulsive barriers can have a crucial effect on atomic kinetics is demonstrated by analyzing three processes important in crystal growth: the lifetime of atoms before incorporating into a cluster, dissociation of atoms from lattice steps, and incorporation on vicinal surfaces.

Original languageEnglish
JournalSurface Science
Volume394
Issue number1-3
Publication statusPublished - 1997 Dec 19
Externally publishedYes

Fingerprint

Atoms
Kinetics
kinetics
Crystallization
Crystal growth
atoms
crystal growth
traps
Metals
metal surfaces
dissociation
life (durability)

Keywords

  • Clusters
  • Epitaxy
  • Growth
  • Models of surface kinetics
  • Nucleation
  • Surface diffusion

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Step-edge barriers : Truths and kinetic consequences. / Kyuno, Kentaro; Ehrlich, Gert.

In: Surface Science, Vol. 394, No. 1-3, 19.12.1997.

Research output: Contribution to journalArticle

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