Measurement of the activation energy for surface diffusion in gold by scanning tunneling microscopy

Tzer Shen Lin*, Yip Wah Chung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Measurements of the activation energy for surface self-diffusion in gold by the method of profile decay using a scanning tunneling microscope (STM) have been done on polycrystalline gold films deposited on glass substrate. The peak-to-peak surface roughness was measured as a function of annealing time after annealing at 125° C, 150° C and 170° C with a special pan-cake furnace in the STM. The resultant gold surface diffusion activation energy is found to be ∼21 kcal mol. These experiments demonstrate the unique ability of STM to study surface diffusion over macroscopic distances in the low temperature regime.

Original languageEnglish (US)
Pages (from-to)539-546
Number of pages8
JournalSurface Science
Volume207
Issue number2-3
DOIs
StatePublished - Jan 1 1989

ASJC Scopus subject areas

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

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