Molecular vibrational energy relaxation at a metal surface

Methyl thiolate on Ag(111)

Alex Harris, L. Rothberg, L. H. Dubois, N. J. Levinos, L. Dhar

Research output: Contribution to journalArticle

175 Citations (Scopus)

Abstract

The lifetime of the first excited level of the symmetric C-H stretching mode of CH3S chemisorbed on a Ag(111) surface was measured by picosecond vibrational spectroscopy. A biexponential decay (3- and 63-ps lifetimes at 300 K) was observed, with a substantial temperature dependence of the slow component. Both decay processes are assigned to intramolecular vibrational relaxation. The decay rates are 2 orders of magnitude too fast to be explained by electron-hole-pair damping by the metal substrate.

Original languageEnglish
Pages (from-to)2086-2089
Number of pages4
JournalPhysical Review Letters
Volume64
Issue number17
DOIs
Publication statusPublished - 1990

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metal surfaces
life (durability)
decay
molecular relaxation
decay rates
damping
temperature dependence
energy
metals
spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Molecular vibrational energy relaxation at a metal surface : Methyl thiolate on Ag(111). / Harris, Alex; Rothberg, L.; Dubois, L. H.; Levinos, N. J.; Dhar, L.

In: Physical Review Letters, Vol. 64, No. 17, 1990, p. 2086-2089.

Research output: Contribution to journalArticle

Harris, Alex ; Rothberg, L. ; Dubois, L. H. ; Levinos, N. J. ; Dhar, L. / Molecular vibrational energy relaxation at a metal surface : Methyl thiolate on Ag(111). In: Physical Review Letters. 1990 ; Vol. 64, No. 17. pp. 2086-2089.
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