Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces

52 pags., 21 figs., 7 tabs.

Detalles Bibliográficos
Autores: Manson, J.R., Benedek, Giorgio, Miret-Artés, Salvador
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/284961
Acceso en línea:http://hdl.handle.net/10261/284961
Access Level:acceso abierto
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spelling Atom scattering as a probe of the surface electron-phonon interaction at conducting surfacesManson, J.R.Benedek, GiorgioMiret-Artés, Salvador52 pags., 21 figs., 7 tabs.An atomic projectile colliding with a surface at kinetic energies in the thermal or hyperthermal range interacts with and is reflected by the electronic density well in front of the first layer of target atoms, and it is generally accepted that the repulsive interaction potential is proportional to the density of electrons extending outside the surface. This review develops a complete treatment of the elastic and inelastic scattering of atoms from a conducting surface in which the interaction with the electron density and its vibrations is treated using electron-phonon coupling theory. Starting from the basic principles of formal scattering theory, the elastic and inelastic scattering intensities are developed in a manner that identifies the small overlap region in the surface electron density where the projectile atom is repelled. The effective vibrational displacements of the electron gas, which lead to energy transfer through excitation of phonons, are directly related to the vibrational displacements of the atomic cores in the target crystal via electron-phonon coupling. The effective Debye-Waller factor for atom-surface scattering is developed and related to the mean square displacements of the atomic cores. The complex dependence of the Debye-Waller factor on momentum and energy of the projectile, including the effects of the attractive adsorption well in the interaction potential, are clearly defined. Applying the standard approximations of electron-phonon coupling theory for metals to the distorted wave Born approximation leads to expressions which relate the elastic and inelastic scattering intensities, as well as the Debye-Waller factor, to the well known electron-phonon coupling constant λ. This treatment reproduces the previously obtained result that the intensities for single phonon inelastic peaks in the scattered spectra are proportional to the mode specific mass correction components λ defined by the relationship λ = 〈λ〉. The intensities of elastic diffraction peaks are shown to be a weighted sum over the λ, and the Debye-Waller factor can also be expressed in terms of a similar weighted summation. In the simplest case the Debye-Waller exponent is shown to be proportional to λ and for simple metals, metal overlayers, and other kinds of conducting surfaces values of λ are extracted from available experimental data. This dependence of the elastic and inelastic scattering, and that of the Debye-Waller factor, on the electron-phonon coupling constant λ shows that measurements of elastic and inelastic spectra of atomic scattering are capable of revealing detailed information about the electron-phonon coupling mechanism in the surface electron density.SMA would like to acknowledge support from Ministerio de Ciencia e Innovación through a grant with reference PID2021-125735NB-I00 and also support from the Fundación Humanismo y Ciencia.Elsevier BVConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/284961reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//PID2021-125735NB-I00http://dx.doi.org/10.1016/j.surfrep.2022.100552Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2849612026-05-22T06:33:51Z
dc.title.none.fl_str_mv Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
title Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
spellingShingle Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
Manson, J.R.
title_short Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
title_full Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
title_fullStr Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
title_full_unstemmed Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
title_sort Atom scattering as a probe of the surface electron-phonon interaction at conducting surfaces
dc.creator.none.fl_str_mv Manson, J.R.
Benedek, Giorgio
Miret-Artés, Salvador
author Manson, J.R.
author_facet Manson, J.R.
Benedek, Giorgio
Miret-Artés, Salvador
author_role author
author2 Benedek, Giorgio
Miret-Artés, Salvador
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description 52 pags., 21 figs., 7 tabs.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/284961
url http://hdl.handle.net/10261/284961
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MICINN//PID2021-125735NB-I00
http://dx.doi.org/10.1016/j.surfrep.2022.100552
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812455

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