Gradual pressure-induced enhancement of magnon excitations in CeCoSi

Autores
Nikitin, S. E.; Franco, Diego Gaspar; Kwon, J.; Bewley, R.; Podlesnyak, Andrey; Hoser, A.; Koza, M. M.; Geibel, C.; Stockert, O.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
CeCoSi is an intermetallic antiferromagnet with a very unusual temperature-pressure phase diagram: at ambient pressure it orders below TN = 8.8 K, while application of hydrostatic pressure induces a new magnetically ordered phase with exceptionally high transition temperature of ∼40 K at 1.5 GPa. We studied the magnetic properties and the pressure-induced magnetic phase of CeCoSi by means of elastic and inelastic neutron scattering (INS) and heat capacity measurements. At ambient pressure CeCoSi orders into a simple commensurate AFM structure with a reduced ordered moment of only mCe = 0.37(6)μB. Specific heat and low-energy INS indicate a significant gap in the low-energy magnon excitation spectrum in the antiferromagnetic phase, with the CEF excitations located above 10 meV. Hydrostatic pressure gradually shifts the energy of the magnon band towards higher energies and the temperature dependence of the magnons measured at 1.5 GPa is consistent with the phase diagram. Moreover, the CEF excitations are also drastically modified under pressure.
Fil: Nikitin, S. E.. Max Planck Institute for Chemical Physics of Solids; Alemania. Technische Universität Dresden; Alemania
Fil: Franco, Diego Gaspar. Max Planck Institute for Chemical Physics of Solids; Alemania. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Kwon, J.. Max Planck Institute for Chemical Physics of Solids; Alemania
Fil: Bewley, R.. Harwell Campus. STFC Rutherford Appleton Laboratory. ISIS Facility; Reino Unido
Fil: Podlesnyak, Andrey. Oak Ridge National Laboratory. Neutron Scattering Division; Estados Unidos
Fil: Hoser, A.. Helmholtz-Zentrum Berlin für Materialien und Energie; Alemania
Fil: Koza, M. M.. Institute Laue Langevin; Francia
Fil: Geibel, C.. Max Planck Institute for Chemical Physics of Solids; Alemania
Fil: Stockert, O.. Max Planck Institute for Chemical Physics of Solids; Alemania
Materia
ANTIFERROMAGNETS
HEAVY FERMION SYSTEMS
SPIN DYNAMICS
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:11336/127071
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/127071
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Gradual pressure-induced enhancement of magnon excitations in CeCoSiNikitin, S. E.Franco, Diego GasparKwon, J.Bewley, R.Podlesnyak, AndreyHoser, A.Koza, M. M.Geibel, C.Stockert, O.ANTIFERROMAGNETSHEAVY FERMION SYSTEMSSPIN DYNAMICShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1CeCoSi is an intermetallic antiferromagnet with a very unusual temperature-pressure phase diagram: at ambient pressure it orders below TN = 8.8 K, while application of hydrostatic pressure induces a new magnetically ordered phase with exceptionally high transition temperature of ∼40 K at 1.5 GPa. We studied the magnetic properties and the pressure-induced magnetic phase of CeCoSi by means of elastic and inelastic neutron scattering (INS) and heat capacity measurements. At ambient pressure CeCoSi orders into a simple commensurate AFM structure with a reduced ordered moment of only mCe = 0.37(6)μB. Specific heat and low-energy INS indicate a significant gap in the low-energy magnon excitation spectrum in the antiferromagnetic phase, with the CEF excitations located above 10 meV. Hydrostatic pressure gradually shifts the energy of the magnon band towards higher energies and the temperature dependence of the magnons measured at 1.5 GPa is consistent with the phase diagram. Moreover, the CEF excitations are also drastically modified under pressure.Fil: Nikitin, S. E.. Max Planck Institute for Chemical Physics of Solids; Alemania. Technische Universität Dresden; AlemaniaFil: Franco, Diego Gaspar. Max Planck Institute for Chemical Physics of Solids; Alemania. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; ArgentinaFil: Kwon, J.. Max Planck Institute for Chemical Physics of Solids; AlemaniaFil: Bewley, R.. Harwell Campus. STFC Rutherford Appleton Laboratory. ISIS Facility; Reino UnidoFil: Podlesnyak, Andrey. Oak Ridge National Laboratory. Neutron Scattering Division; Estados UnidosFil: Hoser, A.. Helmholtz-Zentrum Berlin für Materialien und Energie; AlemaniaFil: Koza, M. M.. Institute Laue Langevin; FranciaFil: Geibel, C.. Max Planck Institute for Chemical Physics of Solids; AlemaniaFil: Stockert, O.. Max Planck Institute for Chemical Physics of Solids; AlemaniaAmerican Physical Society2020-06-17info: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/11336/127071Nikitin, S. E.; Franco, Diego Gaspar; Kwon, J.; Bewley, R.; Podlesnyak, Andrey; et al.; Gradual pressure-induced enhancement of magnon excitations in CeCoSi; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 101; 21; 17-6-2020; 1-112469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevB.101.214426info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.101.214426info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2004.00442info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:59Zoai:ri.conicet.gov.ar:11336/127071instacron: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 10:38:00.121CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Gradual pressure-induced enhancement of magnon excitations in CeCoSi
title Gradual pressure-induced enhancement of magnon excitations in CeCoSi
spellingShingle Gradual pressure-induced enhancement of magnon excitations in CeCoSi
Nikitin, S. E.
ANTIFERROMAGNETS
HEAVY FERMION SYSTEMS
SPIN DYNAMICS
title_short Gradual pressure-induced enhancement of magnon excitations in CeCoSi
title_full Gradual pressure-induced enhancement of magnon excitations in CeCoSi
title_fullStr Gradual pressure-induced enhancement of magnon excitations in CeCoSi
title_full_unstemmed Gradual pressure-induced enhancement of magnon excitations in CeCoSi
title_sort Gradual pressure-induced enhancement of magnon excitations in CeCoSi
dc.creator.none.fl_str_mv Nikitin, S. E.
Franco, Diego Gaspar
Kwon, J.
Bewley, R.
Podlesnyak, Andrey
Hoser, A.
Koza, M. M.
Geibel, C.
Stockert, O.
author Nikitin, S. E.
author_facet Nikitin, S. E.
Franco, Diego Gaspar
Kwon, J.
Bewley, R.
Podlesnyak, Andrey
Hoser, A.
Koza, M. M.
Geibel, C.
Stockert, O.
author_role author
author2 Franco, Diego Gaspar
Kwon, J.
Bewley, R.
Podlesnyak, Andrey
Hoser, A.
Koza, M. M.
Geibel, C.
Stockert, O.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ANTIFERROMAGNETS
HEAVY FERMION SYSTEMS
SPIN DYNAMICS
topic ANTIFERROMAGNETS
HEAVY FERMION SYSTEMS
SPIN DYNAMICS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv CeCoSi is an intermetallic antiferromagnet with a very unusual temperature-pressure phase diagram: at ambient pressure it orders below TN = 8.8 K, while application of hydrostatic pressure induces a new magnetically ordered phase with exceptionally high transition temperature of ∼40 K at 1.5 GPa. We studied the magnetic properties and the pressure-induced magnetic phase of CeCoSi by means of elastic and inelastic neutron scattering (INS) and heat capacity measurements. At ambient pressure CeCoSi orders into a simple commensurate AFM structure with a reduced ordered moment of only mCe = 0.37(6)μB. Specific heat and low-energy INS indicate a significant gap in the low-energy magnon excitation spectrum in the antiferromagnetic phase, with the CEF excitations located above 10 meV. Hydrostatic pressure gradually shifts the energy of the magnon band towards higher energies and the temperature dependence of the magnons measured at 1.5 GPa is consistent with the phase diagram. Moreover, the CEF excitations are also drastically modified under pressure.
Fil: Nikitin, S. E.. Max Planck Institute for Chemical Physics of Solids; Alemania. Technische Universität Dresden; Alemania
Fil: Franco, Diego Gaspar. Max Planck Institute for Chemical Physics of Solids; Alemania. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro | Universidad Nacional de Cuyo. Instituto Balseiro. Archivo Histórico del Centro Atómico Bariloche e Instituto Balseiro; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina
Fil: Kwon, J.. Max Planck Institute for Chemical Physics of Solids; Alemania
Fil: Bewley, R.. Harwell Campus. STFC Rutherford Appleton Laboratory. ISIS Facility; Reino Unido
Fil: Podlesnyak, Andrey. Oak Ridge National Laboratory. Neutron Scattering Division; Estados Unidos
Fil: Hoser, A.. Helmholtz-Zentrum Berlin für Materialien und Energie; Alemania
Fil: Koza, M. M.. Institute Laue Langevin; Francia
Fil: Geibel, C.. Max Planck Institute for Chemical Physics of Solids; Alemania
Fil: Stockert, O.. Max Planck Institute for Chemical Physics of Solids; Alemania
description CeCoSi is an intermetallic antiferromagnet with a very unusual temperature-pressure phase diagram: at ambient pressure it orders below TN = 8.8 K, while application of hydrostatic pressure induces a new magnetically ordered phase with exceptionally high transition temperature of ∼40 K at 1.5 GPa. We studied the magnetic properties and the pressure-induced magnetic phase of CeCoSi by means of elastic and inelastic neutron scattering (INS) and heat capacity measurements. At ambient pressure CeCoSi orders into a simple commensurate AFM structure with a reduced ordered moment of only mCe = 0.37(6)μB. Specific heat and low-energy INS indicate a significant gap in the low-energy magnon excitation spectrum in the antiferromagnetic phase, with the CEF excitations located above 10 meV. Hydrostatic pressure gradually shifts the energy of the magnon band towards higher energies and the temperature dependence of the magnons measured at 1.5 GPa is consistent with the phase diagram. Moreover, the CEF excitations are also drastically modified under pressure.
publishDate 2020
dc.date.none.fl_str_mv 2020-06-17
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/11336/127071
Nikitin, S. E.; Franco, Diego Gaspar; Kwon, J.; Bewley, R.; Podlesnyak, Andrey; et al.; Gradual pressure-induced enhancement of magnon excitations in CeCoSi; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 101; 21; 17-6-2020; 1-11
2469-9950
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/127071
identifier_str_mv Nikitin, S. E.; Franco, Diego Gaspar; Kwon, J.; Bewley, R.; Podlesnyak, Andrey; et al.; Gradual pressure-induced enhancement of magnon excitations in CeCoSi; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 101; 21; 17-6-2020; 1-11
2469-9950
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/url/https://link.aps.org/doi/10.1103/PhysRevB.101.214426
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.101.214426
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2004.00442
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_ 1844614401291714560
score 13.070432

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