Energetics of surface atomic processes near a lattice step

Tsu Yi Fu, Hao Tse Wu, Tien T. Tsong

研究成果: 雜誌貢獻期刊論文同行評審

34 引文 斯高帕斯(Scopus)

摘要

An atomic step of a solid surface can act as not only a reflective or nonreflective boundary but also as an atom-trapping boundary. Using the field ion microscope, we have probed in detail the behavior of Ir adatoms at and near the steps of Ir(001) and Ir(111) surfaces. Activation barrier heights of various atomic processes at step boundaries and the atom-trapping strengths of step-edge sites have been measured. These two surfaces exhibit entirely different step properties. At the terrace near the steps of Ir(111), an empty zone of adatom occupation is found the width of which depends on the terrace size. The difference in the reflective barrier heights of (Formula presented)-type and (Formula presented)-type step edges of Ir(111) layers is also derived.

原文英語
頁(從 - 到)2340-2346
頁數7
期刊Physical Review B - Condensed Matter and Materials Physics
58
發行號4
DOIs
出版狀態已發佈 - 1998

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學

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