Abstract
The energy levels and dynamics of the unoccupied electronic states determine both the electronic properties and chemical activity of an interface. We have used angle-resolved two-photon photoemission1,2 (TPPE) to measure the energies and effective masses of excess electrons in molecular-thickness layers of various alkanes on the Ag(III) surface. This investigation demonstrates the application of angle-resolved TPPE as a new probe of electron localization in 2-D systems.
© 1994 Optical Society of America
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