Diffusion of Xe on Ni(111)

E. Nabighian, X. D. Zhu

Research output: Contribution to journalArticle

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Abstract

We have measured the diffusion rate D(T) for Xe on Ni(111) from 30 to 60 K at coverages of θ=0.04 and θ=0.16. By fitting D(T) to Arrhenius forms D0 exp(-Ed/RT), we found the diffusion to be characterized by small activation energy and unusually small diffusivity: Ed=0.33±0.02 kcal/mol and D0=2×10-9±0.2 cm2/s at θ=0.04, and Ed=0.40±0.04 kcal/mol and D0=3×10-8±0.3 cm2/s at θ=0.16. We discuss the significance of our result in the light of similar observation of small diffusion barriers and unusually small diffusivities for Xe on W(110) and for Al diffusion on Al(111) and on Au(111) reported recently.

Original languageEnglish (US)
Pages (from-to)177-180
Number of pages4
JournalChemical Physics Letters
Volume316
Issue number3-4
StatePublished - Jan 14 2000

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diffusivity
Diffusion barriers
activation energy
Activation energy

ASJC Scopus subject areas

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

Cite this

Nabighian, E., & Zhu, X. D. (2000). Diffusion of Xe on Ni(111). Chemical Physics Letters, 316(3-4), 177-180.

Diffusion of Xe on Ni(111). / Nabighian, E.; Zhu, X. D.

In: Chemical Physics Letters, Vol. 316, No. 3-4, 14.01.2000, p. 177-180.

Research output: Contribution to journalArticle

Nabighian, E & Zhu, XD 2000, 'Diffusion of Xe on Ni(111)', Chemical Physics Letters, vol. 316, no. 3-4, pp. 177-180.
Nabighian E, Zhu XD. Diffusion of Xe on Ni(111). Chemical Physics Letters. 2000 Jan 14;316(3-4):177-180.
Nabighian, E. ; Zhu, X. D. / Diffusion of Xe on Ni(111). In: Chemical Physics Letters. 2000 ; Vol. 316, No. 3-4. pp. 177-180.
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