Chemisorption-induced Pt 4f surface core level shifts |
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Authors: | ML Shek PM Stefan C Binns I Lindau WE Spicer |
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Institution: | Stanford Electronics Laboratories, Stanford University, Stanford, California 94305, USA |
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Abstract: | Soft X-ray photoemission experiments have led to the unambiguous observation of a metal surface core level () shift, due to an adsorbate (CO), to a binding energy larger than the bulk binding energy. The clean (110) surface component, with a binding energy 0.35 ± 0.02 eV lower than the bulk, is shifted by 1.06 ± 0.04 eV towards higher binding energy upon CO chemisorption. The lack of significant changes in the bulk component indicates the localized nature of the CO-Pt surface bonding. |
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