Abstract
A first-principles calculation of the recently discovered interatomic multiatom resonant photoemission (MARPE) effect is presented. In this phenomenon, core photoelectron intensities are enhanced when the photon energy is tuned to a core-level absorption edge of nonidentical neighboring atoms, thus enabling direct determination of near-neighbor atomic identities. Both the multiatom character of MARPE and retardation effects in the photon and electron interactions in the resonant channel are shown to be crucial. Measured peak-intensity enhancements of $40%$ in MnO and spectral shapes similar to the corresponding x-ray absorption profiles are well reproduced by this theory.
Highlights
A first-principles calculation of the recently discovered interatomic multiatom resonant photoemission (MARPE) effect is presented
Core photoelectron intensities are enhanced when the photon energy is tuned to a core-level absorption edge of nonidentical neighboring atoms, enabling direct determination of near-neighbor atomic identities
Measured peak-intensity enhancements of 40% in MnO and spectral shapes similar to the corresponding x-ray absorption profiles are well reproduced by this theory. [S0031-9007(99)09098-5]
Summary
A first-principles calculation of the recently discovered interatomic multiatom resonant photoemission (MARPE) effect is presented. Both the multiatom character of MARPE and retardation effects in the photon and electron interactions in the resonant channel are shown to be crucial.
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