Abstract
The femtosecond dynamics of localization and solvation of photoinjected electrons in ultrathin layers of amorphous solid and 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 , 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 bilayers is attributed to different rigidity of the solvation shell in the bulk and near the surface of ice.
- Received 16 April 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.107402
©2002 American Physical Society