Superfluid He 4 dynamics beyond quasiparticle excitations

Autores
Beauvois, K.; Campbell, C. E.; Dawidowski, Javier; Fåk, B.; Godfrin, H.; Krotscheck, E.; Lauter, H. J.; Lichtenegger, T.; Ollivier, J.; Sultan, A.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phonon-maxon-roton spectrum, characterized by sharp thresholds for phonon-phonon, maxon-roton and roton-roton coupling processes. The experimental dynamic structure factor is compared to the calculation of the same physical quantity by a Dynamic Many-body theory including three-phonon processes self-consistently. The theory is found to provide a quantitative description of the dynamics of the correlated bosons for energies up to about three times that of the Landau quasiparticles.
Fil: Beauvois, K.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia. Universite Grenoble Alpes; Francia
Fil: Campbell, C. E.. University of Minnesota; Estados Unidos
Fil: Dawidowski, Javier. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Fåk, B.. Universite Grenoble Alpes; Francia. Institut Laue Langevin; Francia
Fil: Godfrin, H.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Krotscheck, E.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; Austria
Fil: Lauter, H. J.. Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Estados Unidos
Fil: Lichtenegger, T.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; Austria
Fil: Ollivier, J.. Institut Laue Langevin; Francia
Fil: Sultan, A.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia
Materia
Helio superfluido
Scattering de neutrones
Rotones
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:11336/125809
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Superfluid He 4 dynamics beyond quasiparticle excitationsBeauvois, K.Campbell, C. E.Dawidowski, JavierFåk, B.Godfrin, H.Krotscheck, E.Lauter, H. J.Lichtenegger, T.Ollivier, J.Sultan, A.Helio superfluidoScattering de neutronesRotoneshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phonon-maxon-roton spectrum, characterized by sharp thresholds for phonon-phonon, maxon-roton and roton-roton coupling processes. The experimental dynamic structure factor is compared to the calculation of the same physical quantity by a Dynamic Many-body theory including three-phonon processes self-consistently. The theory is found to provide a quantitative description of the dynamics of the correlated bosons for energies up to about three times that of the Landau quasiparticles.Fil: Beauvois, K.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia. Universite Grenoble Alpes; FranciaFil: Campbell, C. E.. University of Minnesota; Estados UnidosFil: Dawidowski, Javier. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Fåk, B.. Universite Grenoble Alpes; Francia. Institut Laue Langevin; FranciaFil: Godfrin, H.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; FranciaFil: Krotscheck, E.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; AustriaFil: Lauter, H. J.. Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Estados UnidosFil: Lichtenegger, T.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; AustriaFil: Ollivier, J.. Institut Laue Langevin; FranciaFil: Sultan, A.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; FranciaAmerican Physical Society2016-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/125809Beauvois, K.; Campbell, C. E.; Dawidowski, Javier; Fåk, B.; Godfrin, H.; et al.; Superfluid He 4 dynamics beyond quasiparticle excitations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 94; 2; 7-2016; 1-51098-01212469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.94.024504info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.024504info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1605.02638info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:51:17Zoai:ri.conicet.gov.ar:11336/125809instacron: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:34982025-09-03 09:51:17.734CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Superfluid He 4 dynamics beyond quasiparticle excitations
title Superfluid He 4 dynamics beyond quasiparticle excitations
spellingShingle Superfluid He 4 dynamics beyond quasiparticle excitations
Beauvois, K.
Helio superfluido
Scattering de neutrones
Rotones
title_short Superfluid He 4 dynamics beyond quasiparticle excitations
title_full Superfluid He 4 dynamics beyond quasiparticle excitations
title_fullStr Superfluid He 4 dynamics beyond quasiparticle excitations
title_full_unstemmed Superfluid He 4 dynamics beyond quasiparticle excitations
title_sort Superfluid He 4 dynamics beyond quasiparticle excitations
dc.creator.none.fl_str_mv Beauvois, K.
Campbell, C. E.
Dawidowski, Javier
Fåk, B.
Godfrin, H.
Krotscheck, E.
Lauter, H. J.
Lichtenegger, T.
Ollivier, J.
Sultan, A.
author Beauvois, K.
author_facet Beauvois, K.
Campbell, C. E.
Dawidowski, Javier
Fåk, B.
Godfrin, H.
Krotscheck, E.
Lauter, H. J.
Lichtenegger, T.
Ollivier, J.
Sultan, A.
author_role author
author2 Campbell, C. E.
Dawidowski, Javier
Fåk, B.
Godfrin, H.
Krotscheck, E.
Lauter, H. J.
Lichtenegger, T.
Ollivier, J.
Sultan, A.
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Helio superfluido
Scattering de neutrones
Rotones
topic Helio superfluido
Scattering de neutrones
Rotones
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phonon-maxon-roton spectrum, characterized by sharp thresholds for phonon-phonon, maxon-roton and roton-roton coupling processes. The experimental dynamic structure factor is compared to the calculation of the same physical quantity by a Dynamic Many-body theory including three-phonon processes self-consistently. The theory is found to provide a quantitative description of the dynamics of the correlated bosons for energies up to about three times that of the Landau quasiparticles.
Fil: Beauvois, K.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia. Universite Grenoble Alpes; Francia
Fil: Campbell, C. E.. University of Minnesota; Estados Unidos
Fil: Dawidowski, Javier. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Fåk, B.. Universite Grenoble Alpes; Francia. Institut Laue Langevin; Francia
Fil: Godfrin, H.. Centre National de la Recherche Scientifique; Francia. Universite Grenoble Alpes; Francia
Fil: Krotscheck, E.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; Austria
Fil: Lauter, H. J.. Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, Tennessee; Estados Unidos
Fil: Lichtenegger, T.. Department Of Physics, University At Buffalo, Suny Buff; Estados Unidos. Johannes Kepler University; Austria
Fil: Ollivier, J.. Institut Laue Langevin; Francia
Fil: Sultan, A.. Centre National de la Recherche Scientifique; Francia. Institut Laue Langevin; Francia
description The dynamics of superfluid 4He at and above the Landau quasiparticle regime is investigated by high precision inelastic neutron scattering measurements of the dynamic structure factor. A highly structured response is observed above the familiar phonon-maxon-roton spectrum, characterized by sharp thresholds for phonon-phonon, maxon-roton and roton-roton coupling processes. The experimental dynamic structure factor is compared to the calculation of the same physical quantity by a Dynamic Many-body theory including three-phonon processes self-consistently. The theory is found to provide a quantitative description of the dynamics of the correlated bosons for energies up to about three times that of the Landau quasiparticles.
publishDate 2016
dc.date.none.fl_str_mv 2016-07
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/11336/125809
Beauvois, K.; Campbell, C. E.; Dawidowski, Javier; Fåk, B.; Godfrin, H.; et al.; Superfluid He 4 dynamics beyond quasiparticle excitations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 94; 2; 7-2016; 1-5
1098-0121
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/125809
identifier_str_mv Beauvois, K.; Campbell, C. E.; Dawidowski, Javier; Fåk, B.; Godfrin, H.; et al.; Superfluid He 4 dynamics beyond quasiparticle excitations; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 94; 2; 7-2016; 1-5
1098-0121
2469-9969
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/PhysRevB.94.024504
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.94.024504
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1605.02638
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
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
_version_ 1842269085716447232
score 13.13397

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