Magnetic properties of Co on different environments

108 p.

Detalles Bibliográficos
Autor: Gallardo Arrieta, Iker
Tipo de recurso: tesis doctoral
Fecha de publicación:2019
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/39965
Acceso en línea:http://hdl.handle.net/10810/39965
Access Level:acceso abierto
Palabra clave:magnetism
magnetic properties
surfaces
magnetismo
propiedades magnéticas de materiales
superficies
id ES_31eae077f42f1f125f2d749cb7e6bc49
oai_identifier_str oai:addi.ehu.eus:10810/39965
network_acronym_str ES
network_name_str España
repository_id_str
spelling Magnetic properties of Co on different environmentsGallardo Arrieta, Ikermagnetismmagnetic propertiessurfacesmagnetismopropiedades magnéticas de materialessuperficies108 p.We combine density functional theory (DFT) calculations and a multiorbital many-body Hamiltonian approach to shed light on magnetic properties of Co adsorbed on h-BN depending on the adsorption site. These methods reveal an out-of-plane easy axis anisotropy for atop N site and hard axis for hollow site, with an electronic configuration close to 3d8, corresponding to a spin S = 1. Then, we compare our results with x-ray absorption spectroscopy (XAS), x-ray magnetic circular dichroism (XMCD) and x-ray magnetic linear dichroism (XMLD) measurements on Co/h-BN/Ir(111) and Co/h-BN/Ru(0001). XAS and XMCD data show large (14 meV) out-of-plane anisotropy for Co/h-BN/Ru(0001) and almost isotropic for Co/h-BN/Ir(111), while both have an electronic structure compatible with spin S = 1. We use this information to determine the atop N adsorption of Co on h-BN/Ru(0001) and hollow for the Co on h-BN/Ir(111). XMLD data together with DFT and multiorbital Hubbard model results suggest that the different adsorption sites induce dissimilar anisotropy of Co. Finally, we explain from DFT calculations the counterintuitive downward shift of the Au(111) surface state measured by angle resolved photo-emission spectroscopy (ARPES) when two homothetic Co-coordinated metal-organic nanoporous networks (MONN) are self-assembled. We associate this effect to the weak Co-substrate hybridization and show that it appears with different adatoms and substrates.Delgado Acosta, FernandoArnau Pino, Andrés2020202020192019info:eu-repo/semantics/doctoralThesisapplication/pdfhttp://hdl.handle.net/10810/39965reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/Atribución 3.0 España(cc)2019 IKER GALLARDO ARRIETA (cc by 4.0)oai:addi.ehu.eus:10810/399652026-06-18T09:23:17Z
dc.title.none.fl_str_mv Magnetic properties of Co on different environments
title Magnetic properties of Co on different environments
spellingShingle Magnetic properties of Co on different environments
Gallardo Arrieta, Iker
magnetism
magnetic properties
surfaces
magnetismo
propiedades magnéticas de materiales
superficies
title_short Magnetic properties of Co on different environments
title_full Magnetic properties of Co on different environments
title_fullStr Magnetic properties of Co on different environments
title_full_unstemmed Magnetic properties of Co on different environments
title_sort Magnetic properties of Co on different environments
dc.creator.none.fl_str_mv Gallardo Arrieta, Iker
author Gallardo Arrieta, Iker
author_facet Gallardo Arrieta, Iker
author_role author
dc.contributor.none.fl_str_mv Delgado Acosta, Fernando
Arnau Pino, Andrés
dc.subject.none.fl_str_mv magnetism
magnetic properties
surfaces
magnetismo
propiedades magnéticas de materiales
superficies
topic magnetism
magnetic properties
surfaces
magnetismo
propiedades magnéticas de materiales
superficies
description 108 p.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/39965
url http://hdl.handle.net/10810/39965
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
(cc)2019 IKER GALLARDO ARRIETA (cc by 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
(cc)2019 IKER GALLARDO ARRIETA (cc by 4.0)
dc.format.none.fl_str_mv application/pdf
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
_version_ 1869405641932537856
score 15.301603

Similares en LA Referencia