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Electron Solvation in Two Dimensions

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Science  16 Aug 2002:
Vol. 297, Issue 5584, pp. 1163-1166
DOI: 10.1126/science.1073571

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Abstract

Ultrafast two-photon photoemission has been used to study electron solvation at two-dimensional metal/polar-adsorbate interfaces. The molecular motion that causes the excess electron solvation is manifested as a dynamic shift in the electronic energy. Although the initially excited electron is delocalized in the plane of the interface, interactions with the adsorbate can lead to its localization. A method for determining the spatial extent of the localized electron in the plane of the interface has been developed. This spatial extent was measured to be on the order of a single adsorbate molecule.

  • * Present address: Department of Chemistry, Stanford University, Stanford, CA 94305, USA.

  • To whom correspondence should be addressed. E-mail: harris{at}socrates.berkeley.edu

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