Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3

Autores
Santander Syro, A. F.; Bareille, C.; Fortuna, F.; Copie, O.; Gabay, M.; Bertran, F.; Taleb Ibrahimi, A.; Le Fèvre, P.; Herranz, G.; Reyren, N.; Bibes, M.; Barthélémy, A.; Lecoeur, P.; Guevara, Alejandro Javier; Rozenberg, Marcelo Javier
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study, using angle-resolved photoemission spectroscopy, the two-dimensional electron gas (2DEG) at the surface of KTaO3 (KTO), a wide-gap insulator with strong spin-orbit coupling (SOC). We find that this 2DEG is a genuinely different physical state with respect to the bulk: the orbital symmetries of its subbands are entirely reconstructed and their masses are renormalized. This occurs because the values of the SOC, the Fermi energy, and the subband splittings become comparable in the 2DEG. Additionally, we identify an F-center-like heavy band resulting from the polar nature of the KTO surface.
Fil: Santander Syro, A. F.. Centre National de la Recherche Scientifique; Francia
Fil: Bareille, C.. Centre National de la Recherche Scientifique; Francia
Fil: Fortuna, F.. Centre National de la Recherche Scientifique; Francia
Fil: Copie, O.. Universität Würzburg; Alemania
Fil: Gabay, M.. Université Paris Sud; Francia
Fil: Bertran, F.. No especifíca;
Fil: Taleb Ibrahimi, A.. No especifíca;
Fil: Le Fèvre, P.. No especifíca;
Fil: Herranz, G.. Consejo Superior de Investigaciones Científicas; España
Fil: Reyren, N.. Centre National de la Recherche Scientifique; Francia
Fil: Bibes, M.. Centre National de la Recherche Scientifique; Francia
Fil: Barthélémy, A.. Centre National de la Recherche Scientifique; Francia
Fil: Lecoeur, P.. Université Paris Sud; Francia
Fil: Guevara, Alejandro Javier. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rozenberg, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Materia
2DEG
OXIDES
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:11336/274271
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/274271
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3Santander Syro, A. F.Bareille, C.Fortuna, F.Copie, O.Gabay, M.Bertran, F.Taleb Ibrahimi, A.Le Fèvre, P.Herranz, G.Reyren, N.Bibes, M.Barthélémy, A.Lecoeur, P.Guevara, Alejandro JavierRozenberg, Marcelo Javier2DEGOXIDEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study, using angle-resolved photoemission spectroscopy, the two-dimensional electron gas (2DEG) at the surface of KTaO3 (KTO), a wide-gap insulator with strong spin-orbit coupling (SOC). We find that this 2DEG is a genuinely different physical state with respect to the bulk: the orbital symmetries of its subbands are entirely reconstructed and their masses are renormalized. This occurs because the values of the SOC, the Fermi energy, and the subband splittings become comparable in the 2DEG. Additionally, we identify an F-center-like heavy band resulting from the polar nature of the KTO surface.Fil: Santander Syro, A. F.. Centre National de la Recherche Scientifique; FranciaFil: Bareille, C.. Centre National de la Recherche Scientifique; FranciaFil: Fortuna, F.. Centre National de la Recherche Scientifique; FranciaFil: Copie, O.. Universität Würzburg; AlemaniaFil: Gabay, M.. Université Paris Sud; FranciaFil: Bertran, F.. No especifíca;Fil: Taleb Ibrahimi, A.. No especifíca;Fil: Le Fèvre, P.. No especifíca;Fil: Herranz, G.. Consejo Superior de Investigaciones Científicas; EspañaFil: Reyren, N.. Centre National de la Recherche Scientifique; FranciaFil: Bibes, M.. Centre National de la Recherche Scientifique; FranciaFil: Barthélémy, A.. Centre National de la Recherche Scientifique; FranciaFil: Lecoeur, P.. Université Paris Sud; FranciaFil: Guevara, Alejandro Javier. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rozenberg, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaAmerican Physical Society2012-09info: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/11336/274271Santander Syro, A. F.; Bareille, C.; Fortuna, F.; Copie, O.; Gabay, M.; et al.; Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 1-61098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://prb.aps.org/abstract/PRB/v86/i12/e121107info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.86.121107info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:37:35Zoai:ri.conicet.gov.ar:11336/274271instacron: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:34982025-11-12 09:37:35.599CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
title Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
spellingShingle Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
Santander Syro, A. F.
2DEG
OXIDES
title_short Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
title_full Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
title_fullStr Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
title_full_unstemmed Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
title_sort Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3
dc.creator.none.fl_str_mv Santander Syro, A. F.
Bareille, C.
Fortuna, F.
Copie, O.
Gabay, M.
Bertran, F.
Taleb Ibrahimi, A.
Le Fèvre, P.
Herranz, G.
Reyren, N.
Bibes, M.
Barthélémy, A.
Lecoeur, P.
Guevara, Alejandro Javier
Rozenberg, Marcelo Javier
author Santander Syro, A. F.
author_facet Santander Syro, A. F.
Bareille, C.
Fortuna, F.
Copie, O.
Gabay, M.
Bertran, F.
Taleb Ibrahimi, A.
Le Fèvre, P.
Herranz, G.
Reyren, N.
Bibes, M.
Barthélémy, A.
Lecoeur, P.
Guevara, Alejandro Javier
Rozenberg, Marcelo Javier
author_role author
author2 Bareille, C.
Fortuna, F.
Copie, O.
Gabay, M.
Bertran, F.
Taleb Ibrahimi, A.
Le Fèvre, P.
Herranz, G.
Reyren, N.
Bibes, M.
Barthélémy, A.
Lecoeur, P.
Guevara, Alejandro Javier
Rozenberg, Marcelo Javier
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv 2DEG
OXIDES
topic 2DEG
OXIDES
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, using angle-resolved photoemission spectroscopy, the two-dimensional electron gas (2DEG) at the surface of KTaO3 (KTO), a wide-gap insulator with strong spin-orbit coupling (SOC). We find that this 2DEG is a genuinely different physical state with respect to the bulk: the orbital symmetries of its subbands are entirely reconstructed and their masses are renormalized. This occurs because the values of the SOC, the Fermi energy, and the subband splittings become comparable in the 2DEG. Additionally, we identify an F-center-like heavy band resulting from the polar nature of the KTO surface.
Fil: Santander Syro, A. F.. Centre National de la Recherche Scientifique; Francia
Fil: Bareille, C.. Centre National de la Recherche Scientifique; Francia
Fil: Fortuna, F.. Centre National de la Recherche Scientifique; Francia
Fil: Copie, O.. Universität Würzburg; Alemania
Fil: Gabay, M.. Université Paris Sud; Francia
Fil: Bertran, F.. No especifíca;
Fil: Taleb Ibrahimi, A.. No especifíca;
Fil: Le Fèvre, P.. No especifíca;
Fil: Herranz, G.. Consejo Superior de Investigaciones Científicas; España
Fil: Reyren, N.. Centre National de la Recherche Scientifique; Francia
Fil: Bibes, M.. Centre National de la Recherche Scientifique; Francia
Fil: Barthélémy, A.. Centre National de la Recherche Scientifique; Francia
Fil: Lecoeur, P.. Université Paris Sud; Francia
Fil: Guevara, Alejandro Javier. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rozenberg, Marcelo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
description We study, using angle-resolved photoemission spectroscopy, the two-dimensional electron gas (2DEG) at the surface of KTaO3 (KTO), a wide-gap insulator with strong spin-orbit coupling (SOC). We find that this 2DEG is a genuinely different physical state with respect to the bulk: the orbital symmetries of its subbands are entirely reconstructed and their masses are renormalized. This occurs because the values of the SOC, the Fermi energy, and the subband splittings become comparable in the 2DEG. Additionally, we identify an F-center-like heavy band resulting from the polar nature of the KTO surface.
publishDate 2012
dc.date.none.fl_str_mv 2012-09
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/11336/274271
Santander Syro, A. F.; Bareille, C.; Fortuna, F.; Copie, O.; Gabay, M.; et al.; Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 1-6
1098-0121
CONICET Digital
CONICET
url http://hdl.handle.net/11336/274271
identifier_str_mv Santander Syro, A. F.; Bareille, C.; Fortuna, F.; Copie, O.; Gabay, M.; et al.; Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO 3; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 86; 12; 9-2012; 1-6
1098-0121
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://prb.aps.org/abstract/PRB/v86/i12/e121107
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.86.121107
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_ 1848597323926470656
score 13.24909

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