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

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.2085· OSTI ID:686477

Valla, T; Fedorov, A V; Johnson, P D ^[1]; Hulbert, S L ^[2]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
2. National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

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. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 686477
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 83; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANGULAR DISTRIBUTION
EFFECTIVE MASS
ELECTRON-ELECTRON INTERACTIONS
ELECTRON-PHONON COUPLING
MANY-BODY PROBLEM
MOLYBDENUM
PHOTOEMISSION
QUASI PARTICLES
SURFACE PROPERTIES