Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach

Autores
Navarro Sánchez, Jorge Luis; Moreno López, Juan Carlos; Candia, Adriana; Albanesi, Eduardo Aldo; Passeggi, Mario Cesar Guillermo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
To understand and to analyze the transport properties of different metal-insulator systems, we developed an experimental study of the electronic transport properties of AlF 3 thin films deposited over a Cu(1 0 0) substrate, and a theoretical study to model systems composed by an AlF 3 molecule between two metallic Cu(1 0 0)-W(1 0 0) and Cu(1 0 0)-Cu(1 0 0) electrodes with different geometries. The left common electrode is always a Cu(1 0 0) layer, meanwhile the right changing electrode, W(1 0 0) or Cu(1 0 0), in some cases is represented as a layer and in others as having a tip ending. Tunnelling current against voltage (I-V) characteristic curves have been obtained by Scanning Tunneling Spectroscopy (STS) measurements and computed using density functional theory (DFT) with the non equilibrium Green function method (NEGF) within a bias voltage range from −2.5 to 5.0 V. The theoretical curves show low current values, in the order of 10 -9 to 10 -12 , in good agreement with the I-V experimental curves in the same range. This reveals that breakdown response currents begin at higher voltages than 5.0 V. The transmission spectrum, total (DOS) and partial (PDOS) density of states are also presented being the transmission variations addressed in terms of the DOS.
Fil: Navarro Sánchez, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Moreno López, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Candia, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Albanesi, Eduardo Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Passeggi, Mario Cesar Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Materia
ALF 3 THIN FILMS
ELECTRONIC TRANSPORT
NON EQUILIBRIUM GREEN FUNCTIONS (NEGF)
SCANNING TUNNELING MICROSCOPY (STM)
SCANNING TUNNELING SPECTROSCOPY (STS)
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:11336/85876
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/85876
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approachNavarro Sánchez, Jorge LuisMoreno López, Juan CarlosCandia, AdrianaAlbanesi, Eduardo AldoPasseggi, Mario Cesar GuillermoALF 3 THIN FILMSELECTRONIC TRANSPORTNON EQUILIBRIUM GREEN FUNCTIONS (NEGF)SCANNING TUNNELING MICROSCOPY (STM)SCANNING TUNNELING SPECTROSCOPY (STS)https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1To understand and to analyze the transport properties of different metal-insulator systems, we developed an experimental study of the electronic transport properties of AlF 3 thin films deposited over a Cu(1 0 0) substrate, and a theoretical study to model systems composed by an AlF 3 molecule between two metallic Cu(1 0 0)-W(1 0 0) and Cu(1 0 0)-Cu(1 0 0) electrodes with different geometries. The left common electrode is always a Cu(1 0 0) layer, meanwhile the right changing electrode, W(1 0 0) or Cu(1 0 0), in some cases is represented as a layer and in others as having a tip ending. Tunnelling current against voltage (I-V) characteristic curves have been obtained by Scanning Tunneling Spectroscopy (STS) measurements and computed using density functional theory (DFT) with the non equilibrium Green function method (NEGF) within a bias voltage range from −2.5 to 5.0 V. The theoretical curves show low current values, in the order of 10 -9 to 10 -12 , in good agreement with the I-V experimental curves in the same range. This reveals that breakdown response currents begin at higher voltages than 5.0 V. The transmission spectrum, total (DOS) and partial (PDOS) density of states are also presented being the transmission variations addressed in terms of the DOS.Fil: Navarro Sánchez, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Moreno López, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Candia, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Albanesi, Eduardo Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaFil: Passeggi, Mario Cesar Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; ArgentinaElsevier B.V.2018-09info: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/11336/85876Navarro Sánchez, Jorge Luis; Moreno López, Juan Carlos; Candia, Adriana; Albanesi, Eduardo Aldo; Passeggi, Mario Cesar Guillermo; Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach; Elsevier B.V.; Results in Physics; 10; 9-2018; 813-8172211-3797CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.journals.elsevier.com/results-in-physicsinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.rinp.2018.07.035info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:00:16Zoai:ri.conicet.gov.ar:11336/85876instacron: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:34982025-09-03 10:00:17.169CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
title Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
spellingShingle Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
Navarro Sánchez, Jorge Luis
ALF 3 THIN FILMS
ELECTRONIC TRANSPORT
NON EQUILIBRIUM GREEN FUNCTIONS (NEGF)
SCANNING TUNNELING MICROSCOPY (STM)
SCANNING TUNNELING SPECTROSCOPY (STS)
title_short Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
title_full Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
title_fullStr Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
title_full_unstemmed Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
title_sort Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach
dc.creator.none.fl_str_mv Navarro Sánchez, Jorge Luis
Moreno López, Juan Carlos
Candia, Adriana
Albanesi, Eduardo Aldo
Passeggi, Mario Cesar Guillermo
author Navarro Sánchez, Jorge Luis
author_facet Navarro Sánchez, Jorge Luis
Moreno López, Juan Carlos
Candia, Adriana
Albanesi, Eduardo Aldo
Passeggi, Mario Cesar Guillermo
author_role author
author2 Moreno López, Juan Carlos
Candia, Adriana
Albanesi, Eduardo Aldo
Passeggi, Mario Cesar Guillermo
author2_role author
author
author
author
dc.subject.none.fl_str_mv ALF 3 THIN FILMS
ELECTRONIC TRANSPORT
NON EQUILIBRIUM GREEN FUNCTIONS (NEGF)
SCANNING TUNNELING MICROSCOPY (STM)
SCANNING TUNNELING SPECTROSCOPY (STS)
topic ALF 3 THIN FILMS
ELECTRONIC TRANSPORT
NON EQUILIBRIUM GREEN FUNCTIONS (NEGF)
SCANNING TUNNELING MICROSCOPY (STM)
SCANNING TUNNELING SPECTROSCOPY (STS)
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv To understand and to analyze the transport properties of different metal-insulator systems, we developed an experimental study of the electronic transport properties of AlF 3 thin films deposited over a Cu(1 0 0) substrate, and a theoretical study to model systems composed by an AlF 3 molecule between two metallic Cu(1 0 0)-W(1 0 0) and Cu(1 0 0)-Cu(1 0 0) electrodes with different geometries. The left common electrode is always a Cu(1 0 0) layer, meanwhile the right changing electrode, W(1 0 0) or Cu(1 0 0), in some cases is represented as a layer and in others as having a tip ending. Tunnelling current against voltage (I-V) characteristic curves have been obtained by Scanning Tunneling Spectroscopy (STS) measurements and computed using density functional theory (DFT) with the non equilibrium Green function method (NEGF) within a bias voltage range from −2.5 to 5.0 V. The theoretical curves show low current values, in the order of 10 -9 to 10 -12 , in good agreement with the I-V experimental curves in the same range. This reveals that breakdown response currents begin at higher voltages than 5.0 V. The transmission spectrum, total (DOS) and partial (PDOS) density of states are also presented being the transmission variations addressed in terms of the DOS.
Fil: Navarro Sánchez, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Moreno López, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Candia, Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Albanesi, Eduardo Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
Fil: Passeggi, Mario Cesar Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina
description To understand and to analyze the transport properties of different metal-insulator systems, we developed an experimental study of the electronic transport properties of AlF 3 thin films deposited over a Cu(1 0 0) substrate, and a theoretical study to model systems composed by an AlF 3 molecule between two metallic Cu(1 0 0)-W(1 0 0) and Cu(1 0 0)-Cu(1 0 0) electrodes with different geometries. The left common electrode is always a Cu(1 0 0) layer, meanwhile the right changing electrode, W(1 0 0) or Cu(1 0 0), in some cases is represented as a layer and in others as having a tip ending. Tunnelling current against voltage (I-V) characteristic curves have been obtained by Scanning Tunneling Spectroscopy (STS) measurements and computed using density functional theory (DFT) with the non equilibrium Green function method (NEGF) within a bias voltage range from −2.5 to 5.0 V. The theoretical curves show low current values, in the order of 10 -9 to 10 -12 , in good agreement with the I-V experimental curves in the same range. This reveals that breakdown response currents begin at higher voltages than 5.0 V. The transmission spectrum, total (DOS) and partial (PDOS) density of states are also presented being the transmission variations addressed in terms of the DOS.
publishDate 2018
dc.date.none.fl_str_mv 2018-09
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/11336/85876
Navarro Sánchez, Jorge Luis; Moreno López, Juan Carlos; Candia, Adriana; Albanesi, Eduardo Aldo; Passeggi, Mario Cesar Guillermo; Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach; Elsevier B.V.; Results in Physics; 10; 9-2018; 813-817
2211-3797
CONICET Digital
CONICET
url http://hdl.handle.net/11336/85876
identifier_str_mv Navarro Sánchez, Jorge Luis; Moreno López, Juan Carlos; Candia, Adriana; Albanesi, Eduardo Aldo; Passeggi, Mario Cesar Guillermo; Transport properties of Cu-AlF 3 -W and Cu-AlF 3 -Cu heterojunctions using STS measurements and a DFT-NEGF approach; Elsevier B.V.; Results in Physics; 10; 9-2018; 813-817
2211-3797
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.journals.elsevier.com/results-in-physics
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.rinp.2018.07.035
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 Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
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_ 1842269629359063040
score 13.13397

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