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Real-Time Observati...
Real-Time Observation of Surface Bond Breaking with an X-ray Laser
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Dell'Angela, M. (author)
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Anniyev, T. (author)
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Beye, M. (author)
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Coffee, R. (author)
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Foehlisch, A. (author)
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- Gladh, Jörgen (author)
- Stockholms universitet,Fysikum
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Katayama, T. (author)
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Kaya, S. (author)
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Krupin, O. (author)
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LaRue, J. (author)
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Mogelhoj, A. (author)
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Nordlund, D. (author)
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Norskov, J. K. (author)
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- Öberg, Henrik (author)
- Stockholms universitet,Fysikum
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Ogasawara, H. (author)
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- Öström, Henrik (author)
- Stockholms universitet,Fysikum
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- Pettersson, Lars G. M. (author)
- Stockholms universitet,Fysikum
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Schlotter, W. F. (author)
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- Sellberg, Jonas A. (author)
- Stockholms universitet,Fysikum,SLAC National Accelerator Laboratory, USA
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Sorgenfrei, F. (author)
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Turner, J. J. (author)
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Wolf, M. (author)
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Wurth, W. (author)
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- Nilsson, Anders (author)
- Stockholms universitet,Fysikum,SLAC National Accelerator Laboratory, USA
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(creator_code:org_t)
- American Association for the Advancement of Science (AAAS), 2013
- 2013
- English.
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In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 339:6125, s. 1302-1305
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- We used the Linac Coherent Light Source free-electron x-ray laser to probe the electronic structure of CO molecules as their chemisorption state on Ru(0001) changes upon exciting the substrate by using a femtosecond optical laser pulse. We observed electronic structure changes that are consistent with a weakening of the CO interaction with the substrate but without notable desorption. A large fraction of the molecules (30%) was trapped in a transient precursor state that would precede desorption. We calculated the free energy of the molecule as a function of the desorption reaction coordinate using density functional theory, including van der Waals interactions. Two distinct adsorption wells-chemisorbed and precursor state separated by an entropy barrier-explain the anomalously high prefactors often observed in desorption of molecules from metals.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- kemisk fysik
- Chemical Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Dell'Angela, M.
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Anniyev, T.
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Beye, M.
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Coffee, R.
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Foehlisch, A.
-
Gladh, Jörgen
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show more...
-
Katayama, T.
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Kaya, S.
-
Krupin, O.
-
LaRue, J.
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Mogelhoj, A.
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Nordlund, D.
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Norskov, J. K.
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Öberg, Henrik
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Ogasawara, H.
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Öström, Henrik
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Pettersson, Lars ...
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Schlotter, W. F.
-
Sellberg, Jonas ...
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Sorgenfrei, F.
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Turner, J. J.
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Wolf, M.
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Wurth, W.
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Nilsson, Anders
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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Science
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Stockholm University