Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces

Autores
Frisco, Leandro; Gravielle, Maria Silvia
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the effect of crystal lattice vibrations on grazing-incidence fast atom diffraction (GIFAD) from insulator surfaces. To describe the phonon contribution to GIFAD we introduce a semiquantum method named phonon-surface initial value representation (P-SIVR), which represents the surface with a harmonic-crystal model, while the scattering process is described by means of the surface initial value representation approach, including phonon excitations. Expressions for the partial scattering probabilities involving zero- A nd one-phonon exchange are derived. In particular, the P-SIVR approach for zero-phonon scattering is applied to study the influence of thermal lattice vibrations on GIFAD patterns for Ne/LiF(001) at room temperature. It is found that the thermal lattice fluctuations introduce a polar-angle spread into the projectile distributions, which can affect the relative intensities of the interference maxima, even giving rise to interference subpatterns depending on the incidence conditions. Present results are in agreement with the available experiments.
Fil: Frisco, Leandro. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Gravielle, Maria Silvia. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Materia
Phonon
surface
grazing scattering
diffraction
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/98823
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Phonon contribution in grazing-incidence fast atom diffraction from insulator surfacesFrisco, LeandroGravielle, Maria SilviaPhononsurfacegrazing scatteringdiffractionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the effect of crystal lattice vibrations on grazing-incidence fast atom diffraction (GIFAD) from insulator surfaces. To describe the phonon contribution to GIFAD we introduce a semiquantum method named phonon-surface initial value representation (P-SIVR), which represents the surface with a harmonic-crystal model, while the scattering process is described by means of the surface initial value representation approach, including phonon excitations. Expressions for the partial scattering probabilities involving zero- A nd one-phonon exchange are derived. In particular, the P-SIVR approach for zero-phonon scattering is applied to study the influence of thermal lattice vibrations on GIFAD patterns for Ne/LiF(001) at room temperature. It is found that the thermal lattice fluctuations introduce a polar-angle spread into the projectile distributions, which can affect the relative intensities of the interference maxima, even giving rise to interference subpatterns depending on the incidence conditions. Present results are in agreement with the available experiments.Fil: Frisco, Leandro. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Gravielle, Maria Silvia. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaAmerican Physical Society2019-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/98823Frisco, Leandro; Gravielle, Maria Silvia; Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces; American Physical Society; Physical Review A; 100; 6; 12-2019; 62703-627111050-2947CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.100.062703info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:42:11Zoai:ri.conicet.gov.ar:11336/98823instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:42:11.889CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
title Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
spellingShingle Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
Frisco, Leandro
Phonon
surface
grazing scattering
diffraction
title_short Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
title_full Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
title_fullStr Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
title_full_unstemmed Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
title_sort Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces
dc.creator.none.fl_str_mv Frisco, Leandro
Gravielle, Maria Silvia
author Frisco, Leandro
author_facet Frisco, Leandro
Gravielle, Maria Silvia
author_role author
author2 Gravielle, Maria Silvia
author2_role author
dc.subject.none.fl_str_mv Phonon
surface
grazing scattering
diffraction
topic Phonon
surface
grazing scattering
diffraction
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the effect of crystal lattice vibrations on grazing-incidence fast atom diffraction (GIFAD) from insulator surfaces. To describe the phonon contribution to GIFAD we introduce a semiquantum method named phonon-surface initial value representation (P-SIVR), which represents the surface with a harmonic-crystal model, while the scattering process is described by means of the surface initial value representation approach, including phonon excitations. Expressions for the partial scattering probabilities involving zero- A nd one-phonon exchange are derived. In particular, the P-SIVR approach for zero-phonon scattering is applied to study the influence of thermal lattice vibrations on GIFAD patterns for Ne/LiF(001) at room temperature. It is found that the thermal lattice fluctuations introduce a polar-angle spread into the projectile distributions, which can affect the relative intensities of the interference maxima, even giving rise to interference subpatterns depending on the incidence conditions. Present results are in agreement with the available experiments.
Fil: Frisco, Leandro. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Gravielle, Maria Silvia. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
description We study the effect of crystal lattice vibrations on grazing-incidence fast atom diffraction (GIFAD) from insulator surfaces. To describe the phonon contribution to GIFAD we introduce a semiquantum method named phonon-surface initial value representation (P-SIVR), which represents the surface with a harmonic-crystal model, while the scattering process is described by means of the surface initial value representation approach, including phonon excitations. Expressions for the partial scattering probabilities involving zero- A nd one-phonon exchange are derived. In particular, the P-SIVR approach for zero-phonon scattering is applied to study the influence of thermal lattice vibrations on GIFAD patterns for Ne/LiF(001) at room temperature. It is found that the thermal lattice fluctuations introduce a polar-angle spread into the projectile distributions, which can affect the relative intensities of the interference maxima, even giving rise to interference subpatterns depending on the incidence conditions. Present results are in agreement with the available experiments.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/98823
Frisco, Leandro; Gravielle, Maria Silvia; Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces; American Physical Society; Physical Review A; 100; 6; 12-2019; 62703-62711
1050-2947
CONICET Digital
CONICET
url http://hdl.handle.net/11336/98823
identifier_str_mv Frisco, Leandro; Gravielle, Maria Silvia; Phonon contribution in grazing-incidence fast atom diffraction from insulator surfaces; American Physical Society; Physical Review A; 100; 6; 12-2019; 62703-62711
1050-2947
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.100.062703
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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