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Nonlocal Screening of the Photon Fields in Surface Photoemission from Simple Metals

Author

Listed:
  • Nuria Barberán

    (Departament d'Estructura i Constituents de la Matèria, Facultat de Física, Universitat de Barcelona, E-08028 Barcelona, Spain)

  • Joan Bausells

    (Centro Nacional de Microelectrónica (CSIC), Campus UAB, E-08193 Bellaterra, Spain)

  • Erika Ardiles

    (Universidad Nacional San Antonio Abad del Cusco, Ciencias Fisicas, Cusco, Peru)

Abstract

A hydrodynamical model calculation that includes retardation, nonlocal effects within the constitutive equation as well as damping through a constant parameter, has been used to interpret the surface photoemission results for simple metals. Special attention has been paid to the effects that multipole surface modes have in the spectrum. The photon field is screened by the electron gas modeling the vacuum–metal interface with a low density overlayer. A constant initial state for the electron at the Fermi level is assumed. We conclude that the main structure of the photoemission spectrum, a peak atω0

Suggested Citation

  • Nuria Barberán & Joan Bausells & Erika Ardiles, 1998. "Nonlocal Screening of the Photon Fields in Surface Photoemission from Simple Metals," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 5(02), pages 527-536.
    • Handle: RePEc:wsi:srlxxx:v:05:y:1998:i:02:n:s0218625x98000906
    DOI: 10.1142/S0218625X98000906
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