Oscillatory adatom-adatom interactions of ID and 2D surface diffusion systems

Tsu Yi Fu, Te Yi Wu, Tien T. Tsong

研究成果: 雜誌貢獻综述文章

3 引文 斯高帕斯(Scopus)

摘要

Direct observations with the field ion microscope make it possible to determine the probability P(R) of finding two atoms on a surface at a separation R at equilibrium at temperature T. The free energy of interaction F(R) can be obtained from the relation: P(R) ∝ exp[-F(R)/kT]. For the ID diffusion system, the interactions of two Pd atoms on the W(211) plane are studied for following cases: two Pd atoms in the same, and in the nearest channels. Oscillatory behaviors of these interactions along the channel direction are observed and analyzed with data fitting. For the 2D diffusion system, the interactions of two W atoms on the Ir(111) plane are studied. The oscillatory behaviors are not only observed in the interaction energy versus adsorbate separation curve, but also along the [2, -1, -1] and [-1, 0, 1] axes. The interaction energy of the different systems and cases is discussed.

原文英語
頁(從 - 到)124-131
頁數8
期刊Chinese Journal of Physics
43
發行號1 II
出版狀態已發佈 - 2005 二月

    指紋

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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