A finite cluster approach to the electron-hole pair damping of the adsorbate vibration: CO adsorbed on Cu(100)
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Yksityiskohdat
| Alkuperäiskieli | Englanti |
|---|---|
| Sivut | 173-181 |
| Sivumäärä | 9 |
| Julkaisu | Journal of Electron Spectroscopy and Related Phenomena |
| Vuosikerta | 39 |
| Numero | C |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 1986 |
| Julkaistu ulkoisesti | Kyllä |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli |
Tiivistelmä
A finite cluster method is applied to describe the energy transfer from the adsorbate vibrations to the electron-hole pair excitations. For CO stretch vibration on Cu(100) surface a value of 0.5 meV is found for the consequent damping (corresponding to the lifetime of 1.3·10-12- s) in an agreement with a recently measured vibrational line width. The mechanism behind the electron-hole pair excitations is found to be charge oscillations between the molecular 2π{black star} resonance and the substrate, caused by the molecular vibration. Cluster size effects have been found to be negligible.