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  Vibrational relaxation lifetime of a physisorbed molecule at a metal surface.

Kumar, S., Jiang, H., Schwarzer, M., Kandratsenka, A., Schwarzer, D., & Wodtke, A. M. (2019). Vibrational relaxation lifetime of a physisorbed molecule at a metal surface. Physical Review Letters, 123(15): 156101. doi:10.1103/PhysRevLett.123.156101.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-1E41-1 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-1E45-D
Genre: Journal Article

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 Creators:
Kumar, S.1, Author           
Jiang, H.1, Author           
Schwarzer, M., Author
Kandratsenka, A.1, Author           
Schwarzer, D.2, Author           
Wodtke, A. M.1, Author           
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1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_578600              
2Research Group of Reaction Dynamics, MPI for biophysical chemistry, Max Planck Society, ou_578601              

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 Abstract: Previous measurements of vibrational relaxation lifetimes for molecules adsorbed at metal surfaces yielded values of 1-3 ps; however, only chemisorbed molecules have been studied. We report the first measurements of the vibrational relaxation lifetime of a molecule physisorbed to a metal surface. For CO(v = 1) adsorbed on Au(111) at 35 K the vibrational lifetime of the excited stretching mode is 49 +/- 3 ps. The long lifetime seen here is likely to be a general feature of physisorption, which involves weaker electronic coupling between the adsorbate and the solid due to bonding at larger distances.

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Language(s): eng - English
 Dates: 2019-10-102019-10-11
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.123.156101
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Title: Physical Review Letters
Source Genre: Journal
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Pages: 6 Volume / Issue: 123 (15) Sequence Number: 156101 Start / End Page: - Identifier: -