Surface diffusion of Xe on Nb(1 1 0)

P. Thomas, J. Gray, X. D. Zhu, C. Y. Fong

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We studied Xe diffusion on Nb(110) from 48 to 70 K using the linear optical diffraction from laser-induced Xe density gratings. The diffusion rate is characterized by an Arrhenius behavior with an activation energy of E diff=54 meV and a diffusivity D0=1.7×10 -6 cm2/s. We also performed a density-functional theory calculation of the binding energy for Xe on Nb(110). Our preliminary result shows that Xe prefer on-top sites with a binding energy of 247 meV, and move by hopping over short-bridge sites with an activation energy barrier of 51 meV, in close agreement with the experimental value.

Original languageEnglish (US)
Pages (from-to)376-380
Number of pages5
JournalChemical Physics Letters
Volume381
Issue number3-4
DOIs
StatePublished - Nov 14 2003

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

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