Beyond the Chemical Shift: Vibrationally Resolved Core-Level Photoelectron Spectra of Adsorbed CO
- Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala (Sweden)
- Physik Department E20, Technische Universitaet Muenchen, D-85747 Garching (Germany)
Vibrational fine structure has been observed in the C1s and O1s photoelectron lines of CO adsorbed on Ni(100). This allows a detailed separation of vibrational and electronic contributions to the line profile. The main line is found to represent the fully screened final state. The width of the photoelectron lines is dominated by the intramolecular stretch mode, which strongly depends on the chemical state of the adsorbate. The identification of the adiabatic transition makes the determination of chemical shifts more precise. The equivalent core approximation is found to be highly accurate and electronic and geometric equilibrium properties of the core-ionized adsorbate are extracted. {copyright} {ital 1998} {ital The American Physical Society }
- OSTI ID:
- 641561
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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