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Arrangement of CO Molecules Adsorbed on Low Index Metal Surfaces : A Comparison between LEED and HREELS or IRS

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Vibrations at Surfaces
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Abstract

The adsorption of carbon monoxide on low index metal surfaces has been the object of intense research, presenting some apparently conflicting results. Thus, for three systems, CO on Cu(100), on Cu(111) and on Ru(0001), HREELS or IRS show only one C-O stretching frequency while an interpretation of the LEED diagram with a compact monolayer of CO gives at least two adsorption sites. A reexamination of these systems with a model based on a finite coincidence unit cell and one adsorption site, allows a better interpretation of all the data. Laser simulation of LEED is used to test this interpretation and to determine molecular positions within the larger coincidence unit cells.

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© 1982 Plenum Press, New York

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Biberian, J.P., Van Hove, M.A. (1982). Arrangement of CO Molecules Adsorbed on Low Index Metal Surfaces : A Comparison between LEED and HREELS or IRS. In: Caudano, R., Gilles, JM., Lucas, A.A. (eds) Vibrations at Surfaces. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-4058-4_7

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  • DOI: https://doi.org/10.1007/978-1-4684-4058-4_7

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-4060-7

  • Online ISBN: 978-1-4684-4058-4

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