Electron-hole pair excitation determines the mechanism of hydrogen atom 
adsorption.

Bünermann, O.; Jiang, H.; Dorenkamp, Y.; Kandratsenka, A.; Janke, S. M.; Auerbach, D. J.; Wodtke, A. M.

doi:10.1126/science.aad4972

Datensatz

DATENSATZ AKTIONENEXPORT

Zur Ablage hinzufügen

Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben

Zeitschriftenartikel

Electron-hole pair excitation determines the mechanism of hydrogen atom adsorption.

MPG-Autoren

/persons/resource/persons186198

Bünermann, O.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons206229

Jiang, H.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons186196

Dorenkamp, Y.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons15297

Kandratsenka, A.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons185735

Janke, S. M.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons41359

Auerbach, D. J.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

/persons/resource/persons16046

Wodtke, A. M.
Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society;

Externe Ressourcen

http://science.sciencemag.org/content/350/6266/1346.full-text.pdf+html
(Verlagsversion)

Volltexte (beschränkter Zugriff)

Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.

Volltexte (frei zugänglich)

Es sind keine frei zugänglichen Volltexte in PuRe verfügbar

Ergänzendes Material (frei zugänglich)

Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar

Zitation

Bünermann, O., Jiang, H., Dorenkamp, Y., Kandratsenka, A., Janke, S. M., Auerbach, D. J., et al. (2015). Electron-hole pair excitation determines the mechanism of hydrogen atom adsorption. Science, 350(6266), 1346-1349. doi:10.1126/science.aad4972.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0029-1DBF-A

Zusammenfassung

How much translational energy atoms and molecules lose in collisions at surfaces determines whether they adsorb or scatter. The fact that hydrogen (H) atoms stick to metal surfaces poses a basic question. Momentum and energy conservation demands that the light H atom cannot efficiently transfer its energy to the heavier atoms of the solid in a binary collision. How then do H atoms efficiently stick to metal surfaces? We show through experiments that H-atom collisions at an insulating surface (an adsorbed xenon layer on a gold single-crystal surface) are indeed nearly elastic, following the predictions of energy and momentum conservation. In contrast, H-atom collisions with the bare gold surface exhibit a large loss of translational energy that can be reproduced by an atomic-level simulation describing electron-hole pair excitation.