Brownian motion and vibrational phase relaxation at surfaces: CO on Ni(111)

B. N. J. Persson and R. Ryberg
Phys. Rev. B 32, 3586 – Published 15 September 1985
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Abstract

The temperature dependence of the internal stretch vibrational mode of CO chemisorbed on Ni(111) has been studied with the use of infrared spectroscopy. The width of the absorption peak of the bridge-bonded molecules exhibits a strong temperature dependence. A theory is developed which accounts well for the experimental results. It shows that the peak broadening is caused by anharmonic coupling to one particular low-frequency mode, namely a hindered rotation.

  • Received 11 January 1985

DOI:https://doi.org/10.1103/PhysRevB.32.3586

©1985 American Physical Society

Authors & Affiliations

B. N. J. Persson

  • Institut für Festkörperforschung der Kernforschungsanlage Jülich, D-5170 Jülich, West Germany

R. Ryberg

  • Department of Physics, Chalmers University of Technology, S-41296 Gothenburg, Sweden

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Issue

Vol. 32, Iss. 6 — 15 September 1985

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