Surface diffusion of hydrogen on Ni (100): An experimental observation of quantum tunneling diffusion

X. D. Zhu, A. Lee, A. Wong, U. Linke

Research output: Contribution to journalArticle

73 Scopus citations

Abstract

We studied the surface diffusion of hydrogen on Ni(100) by linearly diffracting a probe laser beam from a monolayer grating of adsorbed hydrogen. In the temperature range from 110 to 161 K, the Arrhenius plot shows a significant level off of the diffusion coefficient D(T) at around 144 K. Such a deviation from the behavior of a thermally activated diffusion suggests the onset of quantum tunneling diffusion.

Original languageEnglish (US)
Pages (from-to)1862-1865
Number of pages4
JournalPhysical Review Letters
Volume68
Issue number12
StatePublished - 1992

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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