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Journal Article

Direct Observation of Vibrational Energy Delocalization on Surfaces: CO on Ru(001)

MPS-Authors
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Hess,  Christian
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Wolf,  Martin
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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PhysRevLett.85.4341.pdf
(Publisher version), 240KB

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Citation

Hess, C., Wolf, M., & Bonn, M. (2000). Direct Observation of Vibrational Energy Delocalization on Surfaces: CO on Ru(001). Physical Review Letters, 85(20), 4341-4344. doi:10.1103/PhysRevLett.85.4341.


Cite as: https://hdl.handle.net/21.11116/0000-0009-473F-2
Abstract
We report the experimental observation of the gradual transition from a local oscillator to a two-dimensional delocalized phonon, observed for the CO-stretch vibration of carbon monoxide adsorbed on a Ru(001) surface by means of broadband-infrared saturation sum-frequency spectroscopy. The data are theoretically reproduced by an exchange model with residence times of the excitation down to 2.5 ps.