Ultrafast Dynamics of Electron Localization and Solvation in Ice Layers on Cu(111)

C. Gahl, U. Bovensiepen, C. Frischkorn, and M. Wolf
Phys. Rev. Lett. 89, 107402 – Published 14 August 2002

Abstract

The femtosecond dynamics of localization and solvation of photoinjected electrons in ultrathin layers of amorphous solid H2O and D2O have been studied by time- and angle-resolved two-photon-photoelectron spectroscopy. After electron transfer from the metal substrate into the conduction band of ice, the excess electron localizes within the first 100 fs in a state at 2.9 eV above EF, which is further stabilized by 300 meV on a time scale of 0.5–1 ps due to molecular rearrangements in the adlayer. A pronounced change of the solvation dynamics at a coverage of 2 bilayers is attributed to different rigidity of the solvation shell in the bulk and near the surface of ice.

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  • Received 16 April 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.107402

©2002 American Physical Society

Authors & Affiliations

C. Gahl, U. Bovensiepen, C. Frischkorn, and M. Wolf*

  • Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin-Dahlem, Germany

  • *Email address: wolf@physik.fu-berlin.de Electronic address: http://www.physik.fu-berlin.de/~femtoweb

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Issue

Vol. 89, Iss. 10 — 2 September 2002

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