AVS 46th International Symposium
    Applied Surface Science Division Tuesday Sessions
       Session AS-TuA

Paper AS-TuA4
Theory of Multi-Atom Resonant Photoemission

Tuesday, October 26, 1999, 3:00 pm, Room 6A

Session: Modeling in Applied Surface Science
Presenter: F.J. Garcia de Abajo, Lawrence Berkeley National Laboratory
Authors: F.J. Garcia de Abajo, Lawrence Berkeley National Laboratory
C.S. Fadley, Lawrence Berkeley National Laboratory
M.A. Van Hove, Lawrence Berkeley National Laboratory
Correspondent: Click to Email
Multi-atom resonant photoemission (MARPE) takes places when a core electron of a solid can be excited by an incoming photon beam via two different channels: direct photoexcitation and resonant excitation of a nearby atom that decays via inter-atomic interaction giving rise to the emission of the same core electron. This process permits one to detect the presence in the sample of neighboring atoms A and B of different atomic identity by observing the photoemission signal coming from atom A when the photon energy runs across an absorption edge of atom B. MARPE has been recently observed in several materials, including alloys and multilayered surfaces. A theory of this phenomenon is described here showing good agreement with experiment.