Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3

Autores
Ramos, A. Y.; Souza Neto, N. M.; Tolentino, H. C. N.; Bunau, O.; Joly, Y.; Grenier, S.; Itié, J. P.; Flank, A. M.; Lagarde, P.; Caneiro, Alberto
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Using X-ray absorption spectroscopy (XAS), we studied the local structure in LaMnO3 under applied pressure across and well above the insulator-to-metal (IM) transition. A hysteretic behavior points to the coexistence of two phases within a large pressure range (7 to 25 GPa). The ambient phase with highly Jahn-Teller (JT) distorted MnO6 octahedra is progressively substituted by a new phase with less-distorted JT MnO6 units. The electronic delocalization leading to the IM transition is finger-printed from the pre-edge XAS structure around 30 GPa. We observed that the phase transition takes place without any significant reduction of the JT distortion. This entails band overlap as the driving mechanism of the IM transition.
Fil: Ramos, A. Y.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Souza Neto, N. M.. Argonne National Laboratory; Estados Unidos. Centro Nacional de Pesquisa Em Energia E Materiais. Laboratorio Nacional de Luz Sincrotron;
Fil: Tolentino, H. C. N.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Bunau, O.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Joly, Y.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Grenier, S.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Itié, J. P.. Synchrotron SOLEIL; Francia
Fil: Flank, A. M.. Synchrotron SOLEIL; Francia
Fil: Lagarde, P.. Synchrotron SOLEIL; Francia
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de Cuyo; Argentina
Materia
SYNCHROTRON
EXAFS
XANES
PRESSURE INDUCED METAL STATE
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:11336/281629
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3Ramos, A. Y.Souza Neto, N. M.Tolentino, H. C. N.Bunau, O.Joly, Y.Grenier, S.Itié, J. P.Flank, A. M.Lagarde, P.Caneiro, AlbertoSYNCHROTRONEXAFSXANESPRESSURE INDUCED METAL STATEhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Using X-ray absorption spectroscopy (XAS), we studied the local structure in LaMnO3 under applied pressure across and well above the insulator-to-metal (IM) transition. A hysteretic behavior points to the coexistence of two phases within a large pressure range (7 to 25 GPa). The ambient phase with highly Jahn-Teller (JT) distorted MnO6 octahedra is progressively substituted by a new phase with less-distorted JT MnO6 units. The electronic delocalization leading to the IM transition is finger-printed from the pre-edge XAS structure around 30 GPa. We observed that the phase transition takes place without any significant reduction of the JT distortion. This entails band overlap as the driving mechanism of the IM transition.Fil: Ramos, A. Y.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; FranciaFil: Souza Neto, N. M.. Argonne National Laboratory; Estados Unidos. Centro Nacional de Pesquisa Em Energia E Materiais. Laboratorio Nacional de Luz Sincrotron;Fil: Tolentino, H. C. N.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; FranciaFil: Bunau, O.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; FranciaFil: Joly, Y.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; FranciaFil: Grenier, S.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; FranciaFil: Itié, J. P.. Synchrotron SOLEIL; FranciaFil: Flank, A. M.. Synchrotron SOLEIL; FranciaFil: Lagarde, P.. Synchrotron SOLEIL; FranciaFil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de Cuyo; ArgentinaIOP Publishing2011-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/281629Ramos, A. Y.; Souza Neto, N. M.; Tolentino, H. C. N.; Bunau, O.; Joly, Y.; et al.; Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3; IOP Publishing; Europhysics Letters; 96; 3; 8-2011; 1-70295-5075CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1209/0295-5075/96/36002info:eu-repo/semantics/altIdentifier/doi/10.1209/0295-5075/96/36002info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-03-11T13:19:27Zoai:ri.conicet.gov.ar:11336/281629instacron: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:34982026-03-11 13:19:28.232CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
title Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
spellingShingle Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
Ramos, A. Y.
SYNCHROTRON
EXAFS
XANES
PRESSURE INDUCED METAL STATE
title_short Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
title_full Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
title_fullStr Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
title_full_unstemmed Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
title_sort Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3
dc.creator.none.fl_str_mv Ramos, A. Y.
Souza Neto, N. M.
Tolentino, H. C. N.
Bunau, O.
Joly, Y.
Grenier, S.
Itié, J. P.
Flank, A. M.
Lagarde, P.
Caneiro, Alberto
author Ramos, A. Y.
author_facet Ramos, A. Y.
Souza Neto, N. M.
Tolentino, H. C. N.
Bunau, O.
Joly, Y.
Grenier, S.
Itié, J. P.
Flank, A. M.
Lagarde, P.
Caneiro, Alberto
author_role author
author2 Souza Neto, N. M.
Tolentino, H. C. N.
Bunau, O.
Joly, Y.
Grenier, S.
Itié, J. P.
Flank, A. M.
Lagarde, P.
Caneiro, Alberto
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv SYNCHROTRON
EXAFS
XANES
PRESSURE INDUCED METAL STATE
topic SYNCHROTRON
EXAFS
XANES
PRESSURE INDUCED METAL STATE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Using X-ray absorption spectroscopy (XAS), we studied the local structure in LaMnO3 under applied pressure across and well above the insulator-to-metal (IM) transition. A hysteretic behavior points to the coexistence of two phases within a large pressure range (7 to 25 GPa). The ambient phase with highly Jahn-Teller (JT) distorted MnO6 octahedra is progressively substituted by a new phase with less-distorted JT MnO6 units. The electronic delocalization leading to the IM transition is finger-printed from the pre-edge XAS structure around 30 GPa. We observed that the phase transition takes place without any significant reduction of the JT distortion. This entails band overlap as the driving mechanism of the IM transition.
Fil: Ramos, A. Y.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Souza Neto, N. M.. Argonne National Laboratory; Estados Unidos. Centro Nacional de Pesquisa Em Energia E Materiais. Laboratorio Nacional de Luz Sincrotron;
Fil: Tolentino, H. C. N.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Bunau, O.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Joly, Y.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Grenier, S.. Centre National de la Recherche Scientifique; Francia. Universite Joseph Fourier; Francia
Fil: Itié, J. P.. Synchrotron SOLEIL; Francia
Fil: Flank, A. M.. Synchrotron SOLEIL; Francia
Fil: Lagarde, P.. Synchrotron SOLEIL; Francia
Fil: Caneiro, Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de Cuyo; Argentina
description Using X-ray absorption spectroscopy (XAS), we studied the local structure in LaMnO3 under applied pressure across and well above the insulator-to-metal (IM) transition. A hysteretic behavior points to the coexistence of two phases within a large pressure range (7 to 25 GPa). The ambient phase with highly Jahn-Teller (JT) distorted MnO6 octahedra is progressively substituted by a new phase with less-distorted JT MnO6 units. The electronic delocalization leading to the IM transition is finger-printed from the pre-edge XAS structure around 30 GPa. We observed that the phase transition takes place without any significant reduction of the JT distortion. This entails band overlap as the driving mechanism of the IM transition.
publishDate 2011
dc.date.none.fl_str_mv 2011-08
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/11336/281629
Ramos, A. Y.; Souza Neto, N. M.; Tolentino, H. C. N.; Bunau, O.; Joly, Y.; et al.; Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3; IOP Publishing; Europhysics Letters; 96; 3; 8-2011; 1-7
0295-5075
CONICET Digital
CONICET
url http://hdl.handle.net/11336/281629
identifier_str_mv Ramos, A. Y.; Souza Neto, N. M.; Tolentino, H. C. N.; Bunau, O.; Joly, Y.; et al.; Bandwidth-driven nature of the pressure-induced metal state of LaMnO 3; IOP Publishing; Europhysics Letters; 96; 3; 8-2011; 1-7
0295-5075
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://iopscience.iop.org/article/10.1209/0295-5075/96/36002
info:eu-repo/semantics/altIdentifier/doi/10.1209/0295-5075/96/36002
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 12.977003

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