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Many-body Effects in Angle-resolved Photoemission: Quasiparticle Energy and Lifetime of a Mo(110) Surface State

T. Valla·A. V. Fedorov·P. D. Johnson·S. L. Hulbert
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Abstract

In a high-resolution photoemission study of a Mo(110) surface state various contributions to the measured width and energy of the quasiparticle peak are investigated. Electron-phonon coupling, electron-electron interactions and scattering from defects are all identified mechanisms responsible for the finite lifetime of a valence photo-hole. The electron-phonon induced mass enhancement and rapid change of the photo-hole lifetime near the Fermi level are observed for the first time.

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T. Valla, A. V. Fedorov, P. D. Johnson, S. L. Hulbert. 1999-05-11. Many-body Effects in Angle-resolved Photoemission: Quasiparticle Energy and Lifetime of a Mo(110) Surface State. https://doi.org/10.1103/physrevlett.83.2085

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