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

Nuria Barberán (), Joan Bausells and Erika Ardiles
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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

Surface Review and Letters (SRL), 1998, vol. 05, issue 02, 527-536

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

Keywords: 73.20.Mf; 73.50.Pz (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1142/S0218625X98000906

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