Chemisorption of CO on Ir(100) studied by photoemission

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Abstract

Chemisorption of cabon monoxide on a reconstructed Ir(100) surface has been studied by means of LEED and photoemission. In the photoemission spectrum, apart from a low lying peak due to the 4σ-orbital of CO, there is also a broad bump divided by a clear dip. The upper part of this double peak is assigned to the 5σ orbital and the lower part to the 1 π orbital of CO.

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Supported by NSF grant DMR 71-01769-A02 and by ARPA, through the Cornell Materials Science Center.

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