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Author Silkin, V. M. ♦ Balasubramanian, T. ♦ Chulkov, E. V. ♦ Rubio, A. ♦ Echenique, P. M.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ DECAY ♦ FERMI GAS ♦ PHOTOEMISSION ♦ SCATTERING ♦ SELF-ENERGY ♦ TRANSITION ELEMENTS
Abstract First-principle calculations and angle-resolved photoemission experiments are combined to analyze the different contributions to the surface-state hole dynamics at the Be(0001) surface. The computed inelastic electron-electron scattering rate {gamma} is in good agreement with experiment once the electron-phonon contribution is subtracted. {gamma} is strongly influenced by details of the surface band structure. In particular, the intraband transitions within the surface state itself ignored in traditional Fermi liquid theory contribute 65%-85% to {gamma}. This intraband contribution and the highly spatial nonlocality of the self-energy makes the energy and momentum dependence of {gamma} to be {proportional_to}(E{sub F}-E){sup {alpha}} (with {alpha}<2) in contrast to the observed {alpha}{approx_equal}2 value in noble and transition metal surfaces.
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-08-15
Publisher Place United States
Journal Physical Review B
Volume Number 64
Issue Number 8


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