Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)

The hexagonal close packed surface of gold shows a 22 x root 3 "herringbone" surface reconstruction which makes it unique among the (111) surfaces of all metals. This long-range energetically favored dislocation pattern appears in response to the strong tensile stress that would be present...

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Detalles Bibliográficos
Autores: Merino, P., Roslawska, A., Grewal, A., Leon, C.C., González Pascual, César, Kuhnke, K., Kern, K.
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/7804
Acceso en línea:https://hdl.handle.net/20.500.14352/7804
Access Level:acceso abierto
Palabra clave:538.9
Au(111) surface
Hydrogen
Dissociation
Catalysis
Molecule
Herringbone reconstruction
Gold chain
Molecular hydrogen
Gold hydride
STM
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/7804
network_acronym_str ES
network_name_str España
repository_id_str
spelling Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)Merino, P.Roslawska, A.Grewal, A.Leon, C.C.González Pascual, CésarKuhnke, K.Kern, K.538.9Au(111) surfaceHydrogenDissociationCatalysisMoleculeHerringbone reconstructionGold chainMolecular hydrogenGold hydrideSTMFísica de materialesFísica del estado sólido2211 Física del Estado SólidoThe hexagonal close packed surface of gold shows a 22 x root 3 "herringbone" surface reconstruction which makes it unique among the (111) surfaces of all metals. This long-range energetically favored dislocation pattern appears in response to the strong tensile stress that would be present on the unreconstructed surface. Adsorption of molecular and atomic species can be used to tune this surface stress and lift the herringbone reconstruction. Here we show that herringbone reconstruction can be controllably lifted in ultrahigh vacuum at cryogenic temperatures by precise hot electron injection in the presence of hydrogen molecules. We use the sharp tip of a scanning tunneling microscope (STM) for charge carrier injection and characterization of the resulting chain nanostructures. By comparing STM images, rotational spectromicroscopy and ab initio calculations, we show that formation of gold atomic chains is associated with release of gold atoms from the surface, lifting of the reconstruction, dissociation of H_2 molecules, and formation of surface hydrides. Gold hydrides grow in a zipper-like mechanism forming chains along the [1 (1) over bar0] directions of the Au(111) surface and can be manipulated by further electron injection. Finally, we demonstrate that Au(111) terraces can be transformed with nearly perfect terrace selectivity over distances of hundreds of nanometers.American Chemical SocietyUniversidad Complutense de Madrid20202020-11-0120202020-11-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/7804reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/78042026-06-02T12:44:21Z
dc.title.none.fl_str_mv Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
title Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
spellingShingle Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
Merino, P.
538.9
Au(111) surface
Hydrogen
Dissociation
Catalysis
Molecule
Herringbone reconstruction
Gold chain
Molecular hydrogen
Gold hydride
STM
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
title_full Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
title_fullStr Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
title_full_unstemmed Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
title_sort Gold chain formation via local lifting of surface reconstruction by hot electron injection on H_2(D_2)/Au(111)
dc.creator.none.fl_str_mv Merino, P.
Roslawska, A.
Grewal, A.
Leon, C.C.
González Pascual, César
Kuhnke, K.
Kern, K.
author Merino, P.
author_facet Merino, P.
Roslawska, A.
Grewal, A.
Leon, C.C.
González Pascual, César
Kuhnke, K.
Kern, K.
author_role author
author2 Roslawska, A.
Grewal, A.
Leon, C.C.
González Pascual, César
Kuhnke, K.
Kern, K.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Au(111) surface
Hydrogen
Dissociation
Catalysis
Molecule
Herringbone reconstruction
Gold chain
Molecular hydrogen
Gold hydride
STM
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Au(111) surface
Hydrogen
Dissociation
Catalysis
Molecule
Herringbone reconstruction
Gold chain
Molecular hydrogen
Gold hydride
STM
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description The hexagonal close packed surface of gold shows a 22 x root 3 "herringbone" surface reconstruction which makes it unique among the (111) surfaces of all metals. This long-range energetically favored dislocation pattern appears in response to the strong tensile stress that would be present on the unreconstructed surface. Adsorption of molecular and atomic species can be used to tune this surface stress and lift the herringbone reconstruction. Here we show that herringbone reconstruction can be controllably lifted in ultrahigh vacuum at cryogenic temperatures by precise hot electron injection in the presence of hydrogen molecules. We use the sharp tip of a scanning tunneling microscope (STM) for charge carrier injection and characterization of the resulting chain nanostructures. By comparing STM images, rotational spectromicroscopy and ab initio calculations, we show that formation of gold atomic chains is associated with release of gold atoms from the surface, lifting of the reconstruction, dissociation of H_2 molecules, and formation of surface hydrides. Gold hydrides grow in a zipper-like mechanism forming chains along the [1 (1) over bar0] directions of the Au(111) surface and can be manipulated by further electron injection. Finally, we demonstrate that Au(111) terraces can be transformed with nearly perfect terrace selectivity over distances of hundreds of nanometers.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-11-01
2020
2020-11-01
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/20.500.14352/7804
url https://hdl.handle.net/20.500.14352/7804
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 Chemical Society
publisher.none.fl_str_mv American Chemical 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_ 1869423185189928960
score 15.300719

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