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  Observation of an isomerizing double-well quantum system in the condensed phase.

Lau, J. A., Choudhury, A., Chen, L., Schwarzer, D., Verma, V. B., & Wodtke, A. M. (2020). Observation of an isomerizing double-well quantum system in the condensed phase. Science, 367(6474), 175-178. doi:10.1126/science.aaz3407.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-793E-F Version Permalink: http://hdl.handle.net/21.11116/0000-0005-7942-9
Genre: Journal Article

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 Creators:
Lau, J. A.1, Author              
Choudhury, A.1, Author              
Chen, L.1, Author              
Schwarzer, D.1, Author              
Verma, V. B., Author
Wodtke, A. M.1, Author              
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1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_578600              

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 Abstract: Molecular isomerization fundamentally involves quantum states bound within a potential energy function with multiple minima. For isolated gas-phase molecules, eigenstates well above the isomerization saddle points have been characterized. However, to observe the quantum nature of isomerization, systems in which transitions between the eigenstates occur-such as condensed-phase systems-must be studied. Efforts to resolve quantum states with spectroscopic tools are typically unsuccessful for such systems. An exception is CO adsorbed on NaCl(100), which is bound with the well-known OC-Na+ structure. We observe an unexpected upside-down isomer (CO-Na+) produced by infrared laser excitation and obtain well-resolved infrared fluorescence spectra from highly energetic vibrational states of both orientational isomers. This distinctive condensed-phase system is ideally suited to spectroscopic investigations of the quantum nature of isomerization.

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Language(s): eng - English
 Dates: 2020-01-10
 Publication Status: Published online
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 Rev. Method: Peer
 Identifiers: DOI: 10.1126/science.aaz3407
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Title: Science
Source Genre: Journal
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Pages: - Volume / Issue: 367 (6474) Sequence Number: - Start / End Page: 175 - 178 Identifier: -