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

1999/04/30 by T. Valla, А. В. Федоров, A. V. Fedorov +2 · 8 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Physics of Superconductivity and Magnetism #Surface and Thin Film Phenomena #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.83.2085

published as Phys. Rev. Lett. 83, 2085 (1999) · RevTEX, 4 pages, 4 figures, to be published in PRL

arxiv created 1999/05/11 · openalex publication_date 1999/09/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

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 photohole. The electron-phonon induced mass enhancement and rapid change of the photohole lifetime near the Fermi level are observed for the first time.

Citations

• The Electron–Phonon Interaction in Metals

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