Lateral Displacement by Transient Mobility in Chemisorption of CO on Pt(997)

J. Yoshinobu, N. Tsukahara, F. Yasui, K. Mukai, Y. Yamashita

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    2 Citations (Scopus)

    Abstract

    We investigated adsorbed states of CO on Pt(997) at 11 K using infrared reflection absorption spectroscopy. At 11 K, thermal migration is suppressed and thus the initial chemisorption at terrace sites and step sites is controlled by the transient mobility of the adsorbing molecule. The initial occupation ratio between atop CO on the terrace and atop CO at the step is directly determined to be 3.6:1. With a simple isotropic migration model, we estimated the mean lateral displacement from the first impact point to the initial chemisorption site to be 6.8 Å. We also discuss the origin of transient mobility of CO on metal surfaces.

    Original languageEnglish
    Number of pages1
    JournalPhysical Review Letters
    Volume90
    Issue number24
    DOIs
    Publication statusPublished - 2003 Jan 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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