Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds

One-atom-thick rare-earth/noble metal (RE-NM) compounds are attractive materials to investigate two-dimensional magnetism, since they are easy to synthesize into a common RE-NM2 structure with high crystal perfection. Here we perform a comparative study of the GdAu2, HoAu2, and YbAu2 monolayer compo...

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Autores: Fernández Gómez-Recuero, Laura Isabel, Blanco Rey, María, Castrillo Bodero, Rodrigo, Ilyn, Maxim, Ali, Khadiza, Turco, E., Corso, Martina, Ormaza, M., Gargiani, P., Valbuena, M. A., Mugarza, Aitor, Moras, P., Sheverdyaeva, P. M., Kundu, Asish K., Jugovac, M., Laubschat, C., Ortega Conejero, José Enrique, Schiller, Frederik
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/48705
Acceso en línea:http://hdl.handle.net/10810/48705
Access Level:acceso abierto
Palabra clave:plane-wave method
fermi-surface
photoemission
valence
anisotropy
states
ferromagnetism
spectra
systems
FE
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spelling Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compoundsFernández Gómez-Recuero, Laura IsabelBlanco Rey, MaríaCastrillo Bodero, RodrigoIlyn, MaximAli, KhadizaTurco, E.Corso, MartinaOrmaza, M.Gargiani, P.Valbuena, M. A.Mugarza, AitorMoras, P.Sheverdyaeva, P. M.Kundu, Asish K.Jugovac, M.Laubschat, C.Ortega Conejero, José EnriqueSchiller, Frederikplane-wave methodfermi-surfacephotoemissionvalenceanisotropystatesferromagnetismspectrasystemsFEOne-atom-thick rare-earth/noble metal (RE-NM) compounds are attractive materials to investigate two-dimensional magnetism, since they are easy to synthesize into a common RE-NM2 structure with high crystal perfection. Here we perform a comparative study of the GdAu2, HoAu2, and YbAu2 monolayer compounds grown on Au(111). We find the same atomic lattice quality and moire superlattice periodicity in the three cases, but different electronic properties and magnetism. The YbAu2 monolayer reveals the characteristic electronic signatures of a mixed-valence configuration in the Yb atom. In contrast, GdAu2 and HoAu2 show the trivalent character of the rare-earth and ferromagnetic transitions below 22 K. Yet, the GdAu2 monolayer has an in-plane magnetic easy-axis, versus the out-of-plane one in HoAu2. The electronic bands of the two trivalent compounds are very similar, while the divalent YbAu2 monolayer exhibits different band features. In the latter, a strong 4f-5d hybridization is manifested in neatly resolved avoided crossings near the Fermi level. First principles theory points to a residual presence of empty 4f states, explaining the fluctuating valence of Yb in the YbAu2 monolayer.This work was supported in part by the Spanish MINECO (MAT-2017-88374-P, MAT2016-78293-C6, FIS2016-75862-P, PGC2018-098613-B-C21, SEV-2017-0706 and SEV-2016-0686), the Spanish Research Agency (PID2019-107338RB-C65), Basque Government Project IT-1255-19, and University of the Basque Country (UPV/EHU) grant GIU18/138 and the European Regional Development Fund (ERDF) under the program Interreg V-A Espana-Francia-Andorra (Contract No. EFA 194/16 TNSI). The experiments at Elettra were supported by the EU Calipso project and computational resources were provided by the DIPC computing center. L. F. acknowledges financial support from the European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie grant agreement MagicFACE No 797109. A. K. K., M. J., P. M. S. and P. M. acknowledge the project EUROFEL-ROADMAP ESFRI. We furthermore want to thank Prof. T. Greber from the University of Zurich to enable us to use the ARPES spectrometer for the constant energy and Fermi surface measurements.Royal Society of ChemistryEuropean Commission202020202020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/48705reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/MAT-2017-88374-P/info:eu-repo/grantAgreement/MINECO/MAT2016-78293-C6/info:eu-repo/grantAgreement/MINECO/FIS2016-75862-P/info:eu-repo/grantAgreement/MINECO/PGC2018-098613-B-C21/info:eu-repo/grantAgreement/MINECO/SEV-2017-0706/info:eu-repo/grantAgreement/MINECO/SEV-2016-0686/info:eu-repo/grantAgreement/EC/H2020/797109https://pubs.rsc.org/en/content/articlelanding/2020/NR/D0NR04964F#!divAbstractinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/3.0/es/This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported LicenceAtribución-NoComercial 3.0 Españaoai:addi.ehu.eus:10810/487052026-06-18T09:23:17Z
dc.title.none.fl_str_mv Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
title Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
spellingShingle Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
Fernández Gómez-Recuero, Laura Isabel
plane-wave method
fermi-surface
photoemission
valence
anisotropy
states
ferromagnetism
spectra
systems
FE
title_short Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
title_full Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
title_fullStr Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
title_full_unstemmed Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
title_sort Influence of 4f filling on electronic and magnetic properties of rare earth-Au surface compounds
dc.creator.none.fl_str_mv Fernández Gómez-Recuero, Laura Isabel
Blanco Rey, María
Castrillo Bodero, Rodrigo
Ilyn, Maxim
Ali, Khadiza
Turco, E.
Corso, Martina
Ormaza, M.
Gargiani, P.
Valbuena, M. A.
Mugarza, Aitor
Moras, P.
Sheverdyaeva, P. M.
Kundu, Asish K.
Jugovac, M.
Laubschat, C.
Ortega Conejero, José Enrique
Schiller, Frederik
author Fernández Gómez-Recuero, Laura Isabel
author_facet Fernández Gómez-Recuero, Laura Isabel
Blanco Rey, María
Castrillo Bodero, Rodrigo
Ilyn, Maxim
Ali, Khadiza
Turco, E.
Corso, Martina
Ormaza, M.
Gargiani, P.
Valbuena, M. A.
Mugarza, Aitor
Moras, P.
Sheverdyaeva, P. M.
Kundu, Asish K.
Jugovac, M.
Laubschat, C.
Ortega Conejero, José Enrique
Schiller, Frederik
author_role author
author2 Blanco Rey, María
Castrillo Bodero, Rodrigo
Ilyn, Maxim
Ali, Khadiza
Turco, E.
Corso, Martina
Ormaza, M.
Gargiani, P.
Valbuena, M. A.
Mugarza, Aitor
Moras, P.
Sheverdyaeva, P. M.
Kundu, Asish K.
Jugovac, M.
Laubschat, C.
Ortega Conejero, José Enrique
Schiller, Frederik
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
dc.subject.none.fl_str_mv plane-wave method
fermi-surface
photoemission
valence
anisotropy
states
ferromagnetism
spectra
systems
FE
topic plane-wave method
fermi-surface
photoemission
valence
anisotropy
states
ferromagnetism
spectra
systems
FE
description One-atom-thick rare-earth/noble metal (RE-NM) compounds are attractive materials to investigate two-dimensional magnetism, since they are easy to synthesize into a common RE-NM2 structure with high crystal perfection. Here we perform a comparative study of the GdAu2, HoAu2, and YbAu2 monolayer compounds grown on Au(111). We find the same atomic lattice quality and moire superlattice periodicity in the three cases, but different electronic properties and magnetism. The YbAu2 monolayer reveals the characteristic electronic signatures of a mixed-valence configuration in the Yb atom. In contrast, GdAu2 and HoAu2 show the trivalent character of the rare-earth and ferromagnetic transitions below 22 K. Yet, the GdAu2 monolayer has an in-plane magnetic easy-axis, versus the out-of-plane one in HoAu2. The electronic bands of the two trivalent compounds are very similar, while the divalent YbAu2 monolayer exhibits different band features. In the latter, a strong 4f-5d hybridization is manifested in neatly resolved avoided crossings near the Fermi level. First principles theory points to a residual presence of empty 4f states, explaining the fluctuating valence of Yb in the YbAu2 monolayer.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/48705
url http://hdl.handle.net/10810/48705
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/MAT-2017-88374-P/
info:eu-repo/grantAgreement/MINECO/MAT2016-78293-C6/
info:eu-repo/grantAgreement/MINECO/FIS2016-75862-P/
info:eu-repo/grantAgreement/MINECO/PGC2018-098613-B-C21/
info:eu-repo/grantAgreement/MINECO/SEV-2017-0706/
info:eu-repo/grantAgreement/MINECO/SEV-2016-0686/
info:eu-repo/grantAgreement/EC/H2020/797109
https://pubs.rsc.org/en/content/articlelanding/2020/NR/D0NR04964F#!divAbstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc/3.0/es/
This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence
Atribución-NoComercial 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/3.0/es/
This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence
Atribución-NoComercial 3.0 España
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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