Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux

Autores
Curlík, Ivan; Giovannini, M.; Sereni, Julian Gustavo Renzo; Zapotoková, M.; Gabáni, S.; Reiffers, M.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Structural, magnetic, transport, and thermal properties of YbCu5-xAux alloys with Au concentration between x=0.4 (at the stability limit of AuBe5-type structure) and x=0.7 are reported. The outstanding features of this system are (i) the constant and record high value of Cm/T≈6.7 J/mol K2 below a characteristic temperature T∗ (ranging between 150 mK and 350 mK), (ii) a power law of temperature dependence Cm/T(T>T∗)=g/Tq, with q ranging between 1.3 and 0.95 for decreasing x from 0.7 to 0.5, and (iii) an observation of incoherent electronic scattering in the resistivity at T<1 K for x≤0.6 despite the fact that Yb magnetic atoms are placed in an ordered lattice. Geometric frustration, originating from the tetrahedral distribution of Yb atoms, appears to be responsible for the lack of magnetic order and the exotic behavior of this system.
Fil: Curlík, Ivan. University of Presov; Eslovaquia
Fil: Giovannini, M.. Centre National de la Recherche Scientifique; Francia. SuPerconducting and other INnovative materials and devices institute; Italia. Università degli Studi di Genova; Italia
Fil: Sereni, Julian Gustavo Renzo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Bajas Temperaturas; Argentina
Fil: Zapotoková, M.. University of Presov; Eslovaquia
Fil: Gabáni, S.. Institute of Experimental Physics SAS; Eslovaquia
Fil: Reiffers, M.. University of Presov; Eslovaquia. Institute of Experimental Physics SAS; Eslovaquia
Materia
MAGNETISMO
FERMIONES PESADOS
COMPUESTOS DE YTERBIO
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:11336/180714
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Extremely high density of magnetic excitations at T=0 in YbCu5-x AuxCurlík, IvanGiovannini, M.Sereni, Julian Gustavo RenzoZapotoková, M.Gabáni, S.Reiffers, M.MAGNETISMOFERMIONES PESADOSCOMPUESTOS DE YTERBIOhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Structural, magnetic, transport, and thermal properties of YbCu5-xAux alloys with Au concentration between x=0.4 (at the stability limit of AuBe5-type structure) and x=0.7 are reported. The outstanding features of this system are (i) the constant and record high value of Cm/T≈6.7 J/mol K2 below a characteristic temperature T∗ (ranging between 150 mK and 350 mK), (ii) a power law of temperature dependence Cm/T(T>T∗)=g/Tq, with q ranging between 1.3 and 0.95 for decreasing x from 0.7 to 0.5, and (iii) an observation of incoherent electronic scattering in the resistivity at T<1 K for x≤0.6 despite the fact that Yb magnetic atoms are placed in an ordered lattice. Geometric frustration, originating from the tetrahedral distribution of Yb atoms, appears to be responsible for the lack of magnetic order and the exotic behavior of this system.Fil: Curlík, Ivan. University of Presov; EslovaquiaFil: Giovannini, M.. Centre National de la Recherche Scientifique; Francia. SuPerconducting and other INnovative materials and devices institute; Italia. Università degli Studi di Genova; ItaliaFil: Sereni, Julian Gustavo Renzo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Bajas Temperaturas; ArgentinaFil: Zapotoková, M.. University of Presov; EslovaquiaFil: Gabáni, S.. Institute of Experimental Physics SAS; EslovaquiaFil: Reiffers, M.. University of Presov; Eslovaquia. Institute of Experimental Physics SAS; EslovaquiaAmerican Physical Society2014-12info: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/11336/180714Curlík, Ivan; Giovannini, M.; Sereni, Julian Gustavo Renzo; Zapotoková, M.; Gabáni, S.; et al.; Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 22; 12-2014; 1-70163-1829CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.224409info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.90.224409info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-05T09:53:32Zoai:ri.conicet.gov.ar:11336/180714instacron: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:34982025-11-05 09:53:32.96CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
title Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
spellingShingle Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
Curlík, Ivan
MAGNETISMO
FERMIONES PESADOS
COMPUESTOS DE YTERBIO
title_short Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
title_full Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
title_fullStr Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
title_full_unstemmed Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
title_sort Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux
dc.creator.none.fl_str_mv Curlík, Ivan
Giovannini, M.
Sereni, Julian Gustavo Renzo
Zapotoková, M.
Gabáni, S.
Reiffers, M.
author Curlík, Ivan
author_facet Curlík, Ivan
Giovannini, M.
Sereni, Julian Gustavo Renzo
Zapotoková, M.
Gabáni, S.
Reiffers, M.
author_role author
author2 Giovannini, M.
Sereni, Julian Gustavo Renzo
Zapotoková, M.
Gabáni, S.
Reiffers, M.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv MAGNETISMO
FERMIONES PESADOS
COMPUESTOS DE YTERBIO
topic MAGNETISMO
FERMIONES PESADOS
COMPUESTOS DE YTERBIO
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Structural, magnetic, transport, and thermal properties of YbCu5-xAux alloys with Au concentration between x=0.4 (at the stability limit of AuBe5-type structure) and x=0.7 are reported. The outstanding features of this system are (i) the constant and record high value of Cm/T≈6.7 J/mol K2 below a characteristic temperature T∗ (ranging between 150 mK and 350 mK), (ii) a power law of temperature dependence Cm/T(T>T∗)=g/Tq, with q ranging between 1.3 and 0.95 for decreasing x from 0.7 to 0.5, and (iii) an observation of incoherent electronic scattering in the resistivity at T<1 K for x≤0.6 despite the fact that Yb magnetic atoms are placed in an ordered lattice. Geometric frustration, originating from the tetrahedral distribution of Yb atoms, appears to be responsible for the lack of magnetic order and the exotic behavior of this system.
Fil: Curlík, Ivan. University of Presov; Eslovaquia
Fil: Giovannini, M.. Centre National de la Recherche Scientifique; Francia. SuPerconducting and other INnovative materials and devices institute; Italia. Università degli Studi di Genova; Italia
Fil: Sereni, Julian Gustavo Renzo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche). División Bajas Temperaturas; Argentina
Fil: Zapotoková, M.. University of Presov; Eslovaquia
Fil: Gabáni, S.. Institute of Experimental Physics SAS; Eslovaquia
Fil: Reiffers, M.. University of Presov; Eslovaquia. Institute of Experimental Physics SAS; Eslovaquia
description Structural, magnetic, transport, and thermal properties of YbCu5-xAux alloys with Au concentration between x=0.4 (at the stability limit of AuBe5-type structure) and x=0.7 are reported. The outstanding features of this system are (i) the constant and record high value of Cm/T≈6.7 J/mol K2 below a characteristic temperature T∗ (ranging between 150 mK and 350 mK), (ii) a power law of temperature dependence Cm/T(T>T∗)=g/Tq, with q ranging between 1.3 and 0.95 for decreasing x from 0.7 to 0.5, and (iii) an observation of incoherent electronic scattering in the resistivity at T<1 K for x≤0.6 despite the fact that Yb magnetic atoms are placed in an ordered lattice. Geometric frustration, originating from the tetrahedral distribution of Yb atoms, appears to be responsible for the lack of magnetic order and the exotic behavior of this system.
publishDate 2014
dc.date.none.fl_str_mv 2014-12
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/11336/180714
Curlík, Ivan; Giovannini, M.; Sereni, Julian Gustavo Renzo; Zapotoková, M.; Gabáni, S.; et al.; Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 22; 12-2014; 1-7
0163-1829
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180714
identifier_str_mv Curlík, Ivan; Giovannini, M.; Sereni, Julian Gustavo Renzo; Zapotoková, M.; Gabáni, S.; et al.; Extremely high density of magnetic excitations at T=0 in YbCu5-x Aux; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 22; 12-2014; 1-7
0163-1829
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.224409
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.90.224409
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
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score 13.084122

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