Step edge diffusion and the structure of nanometer-size Ir islands on the Ir(111) surface

Tsu Yi Fu, Yi Ren Tzeng, Tien T. Tsong

研究成果: 雜誌貢獻文章

12 引文 斯高帕斯(Scopus)

摘要

We report an FIM study of the structure of nanometer-size Ir islands on the Ir(111) surface. In this experiment, the number of atoms in an island is carefully controlled by field evaporation and vapor deposition. When this number can be fitted to a hexagonal atomic arrangement, the stable structure is found to be a perfect hexagon. In other cases, an addition of one ledge atom can reverse the symmetry of a small island or change its shape. We also compare diffusion of adatoms on the Ir(311) and (331) surfaces to that of ledge-atoms along the A- and B-type steps of the (111) layer, and the relative binding energies of a ledge atom at these steps.

原文英語
頁(從 - 到)L691-L696
期刊Surface Science
366
發行號2
DOIs
出版狀態已發佈 - 1996 十月 20

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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