Electron Solvation in Two Dimensions
A. D. Miller,1
I. Bezel,2
K. J. Gaffney,1*
S. Garrett-Roe,1
S. H. Liu,1
P. Szymanski,1
C. B. Harris1
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.
1 Department of Chemistry, University of
California, Berkeley, and Chemical Sciences Division, E. O. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
2 Miller Institute for Basic Research in Science,
2536 Channing Way #5190, Berkeley, CA 94720, USA.
*
Present address: Department of Chemistry, Stanford University,
Stanford, CA 94305, USA.
To whom correspondence should be addressed. E-mail:
harris{at}socrates.berkeley.edu
