Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission

Electrons at noble metal surfaces can be confined within terraces leading to one-dimensional surface states. These can be studied with angle-resolved photoemission from vicinal surfaces with regular arrays of (111)-oriented terraces. Here we show the case of Au(23 23 21), which is vicinal to Au(111)...

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Detalhes bibliográficos
Autores: Mugarza, A., Mascaraque Susunaga, Arantzazu, Repain, V., Rousset, S., Altmann, K. N., Himpsel, F. J., Koroteev, Y. M., Chulkov, E. V., García Abajo, F. J., Ortega, J. E.
Tipo de documento: artigo
Data de publicação:2002
País:España
Recursos:Universidad Complutense de Madrid (UCM)
Repositório:Docta Complutense
Idioma:inglês
OAI Identifier:oai:docta.ucm.es:20.500.14352/59403
Acesso em linha:https://hdl.handle.net/20.500.14352/59403
Access Level:Acceso aberto
Palavra-chave:538.9
Surface electronic-structure
Metal-Surfaces
State electrons
Spin
Temperature
Confinement
Cu(111)
Corrals
Terrace
Arrays
Física de materiales
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oai_identifier_str oai:docta.ucm.es:20.500.14352/59403
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repository_id_str
spelling Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemissionMugarza, A.Mascaraque Susunaga, ArantzazuRepain, V.Rousset, S.Altmann, K. N.Himpsel, F. J.Koroteev, Y. M.Chulkov, E. V.García Abajo, F. J.Ortega, J. E.538.9Surface electronic-structureMetal-SurfacesState electronsSpinTemperatureConfinementCu(111)CorralsTerraceArraysFísica de materialesElectrons at noble metal surfaces can be confined within terraces leading to one-dimensional surface states. These can be studied with angle-resolved photoemission from vicinal surfaces with regular arrays of (111)-oriented terraces. Here we show the case of Au(23 23 21), which is vicinal to Au(111) and displays L=56 Angstrom wide terraces. The surface state band appears broken up into three quantum well levels that match to those of the infinite quantum well of the same width L. Their parallel momentum dependent photoemission intensity allows mapping the probability density of the confined wave function in reciprocal space using angle-resolved photoemission. By Fourier transformation, their respective experimental wave functions in real space are obtained and compared to the case of the infinite quantum-well, showing excellent agreement. Final state step superlattice diffraction effects have also been observed. Finally, we observe the quenching of the characteristic spin-orbit coupling of Au(111) in the confinement direction. This is another indication of the one-dimensional character of the surface state, as confirmed with first order perturbation theory.American Physical SocietyUniversidad Complutense de Madrid20022002-12-1520022002-12-15journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59403reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/594032026-06-02T12:44:21Z
dc.title.none.fl_str_mv Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
title Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
spellingShingle Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
Mugarza, A.
538.9
Surface electronic-structure
Metal-Surfaces
State electrons
Spin
Temperature
Confinement
Cu(111)
Corrals
Terrace
Arrays
Física de materiales
title_short Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
title_full Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
title_fullStr Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
title_full_unstemmed Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
title_sort Lateral quantum wells at vicinal Au(111) studied with angle-resolved photoemission
dc.creator.none.fl_str_mv Mugarza, A.
Mascaraque Susunaga, Arantzazu
Repain, V.
Rousset, S.
Altmann, K. N.
Himpsel, F. J.
Koroteev, Y. M.
Chulkov, E. V.
García Abajo, F. J.
Ortega, J. E.
author Mugarza, A.
author_facet Mugarza, A.
Mascaraque Susunaga, Arantzazu
Repain, V.
Rousset, S.
Altmann, K. N.
Himpsel, F. J.
Koroteev, Y. M.
Chulkov, E. V.
García Abajo, F. J.
Ortega, J. E.
author_role author
author2 Mascaraque Susunaga, Arantzazu
Repain, V.
Rousset, S.
Altmann, K. N.
Himpsel, F. J.
Koroteev, Y. M.
Chulkov, E. V.
García Abajo, F. J.
Ortega, J. E.
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Surface electronic-structure
Metal-Surfaces
State electrons
Spin
Temperature
Confinement
Cu(111)
Corrals
Terrace
Arrays
Física de materiales
topic 538.9
Surface electronic-structure
Metal-Surfaces
State electrons
Spin
Temperature
Confinement
Cu(111)
Corrals
Terrace
Arrays
Física de materiales
description Electrons at noble metal surfaces can be confined within terraces leading to one-dimensional surface states. These can be studied with angle-resolved photoemission from vicinal surfaces with regular arrays of (111)-oriented terraces. Here we show the case of Au(23 23 21), which is vicinal to Au(111) and displays L=56 Angstrom wide terraces. The surface state band appears broken up into three quantum well levels that match to those of the infinite quantum well of the same width L. Their parallel momentum dependent photoemission intensity allows mapping the probability density of the confined wave function in reciprocal space using angle-resolved photoemission. By Fourier transformation, their respective experimental wave functions in real space are obtained and compared to the case of the infinite quantum-well, showing excellent agreement. Final state step superlattice diffraction effects have also been observed. Finally, we observe the quenching of the characteristic spin-orbit coupling of Au(111) in the confinement direction. This is another indication of the one-dimensional character of the surface state, as confirmed with first order perturbation theory.
publishDate 2002
dc.date.none.fl_str_mv 2002
2002-12-15
2002
2002-12-15
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/59403
url https://hdl.handle.net/20.500.14352/59403
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869419890852495360
score 15,301603

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