Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.mtcomm.2020.101339 http://hdl.handle.net/11449/201887 |
Resumo: | The search for new and low-power switching devices involving the integration of semiconductor thin films is of interest, and has led to renewed research because such devices may exhibit innovative properties. Here, we investigate the two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface with metallic and insulator behavior. Insight is offered by quantifying the interface charge distribution associated with structural and electronic order-disorder effects. Variations in the electron conductivity were observed to be associated with different specific clustering arrangements of both Ti and Al cations of the co-exposed surfaces at the interface, i.e., structural and electronic connectivity among the undercoordinated [TiO5] and [AlO5] clusters. These results indicate facet control as a strategy for enhancing the electric and magnetic properties of a device via the quantum confinement of electrons. |
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Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfacesDFT calculationsElectronic transport propertiesLaAlO3/SrTiO3 interfaceThin film oxygen pressureTwo-dimensional electron gas (2DEG)The search for new and low-power switching devices involving the integration of semiconductor thin films is of interest, and has led to renewed research because such devices may exhibit innovative properties. Here, we investigate the two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface with metallic and insulator behavior. Insight is offered by quantifying the interface charge distribution associated with structural and electronic order-disorder effects. Variations in the electron conductivity were observed to be associated with different specific clustering arrangements of both Ti and Al cations of the co-exposed surfaces at the interface, i.e., structural and electronic connectivity among the undercoordinated [TiO5] and [AlO5] clusters. These results indicate facet control as a strategy for enhancing the electric and magnetic properties of a device via the quantum confinement of electrons.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universitat Jaume IGeneralitat ValencianaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Faculty of Engineering of Guaratinguetá São Paulo State University UNESPDepartment of Analytical and Physical Chemistry University Jaume I (UJI)Department of Physics FederalUniversity of São Carlos UFSCARCDMF Federal University of São Carlos UFSCARInstitute of Physics of São Carlos University of São Paulo – USPInterdisciplinary Laboratory of Electrochemistry and Ceramics LIEC Chemistry Institute São Paulo State University UNESPFaculty of Engineering of Guaratinguetá São Paulo State University UNESPInterdisciplinary Laboratory of Electrochemistry and Ceramics LIEC Chemistry Institute São Paulo State University UNESPCAPES: 150949/2018-9FAPESP: 2013/07296-2, 2017/19143-7FAPESP: 2018/01914-0FAPESP: 2019/09296-6Universidade Estadual Paulista (Unesp)University Jaume I (UJI)Universidade Federal de São Carlos (UFSCar)Universidade de São Paulo (USP)Amoresi, Rafael A.C. [UNESP]Cichetto, LeonélioGouveia, Amanda F.Colmenares, Yormary N.Teodoro, Marcio D.Marques, Gilmar E.Longo, ElsonSimões, Alexandre Z. [UNESP]Andrés, JuanChiquito, Adenilson J.Zaghete, Maria A. [UNESP]2020-12-12T02:44:25Z2020-12-12T02:44:25Z2020-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.mtcomm.2020.101339Materials Today Communications, v. 24.2352-4928http://hdl.handle.net/11449/20188710.1016/j.mtcomm.2020.1013392-s2.0-85086638484Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Today Communicationsinfo:eu-repo/semantics/openAccess2021-10-23T02:54:15Zoai:repositorio.unesp.br:11449/201887Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T02:54:15Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
title |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
spellingShingle |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces Amoresi, Rafael A.C. [UNESP] DFT calculations Electronic transport properties LaAlO3/SrTiO3 interface Thin film oxygen pressure Two-dimensional electron gas (2DEG) |
title_short |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
title_full |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
title_fullStr |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
title_full_unstemmed |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
title_sort |
Metallic behavior in STO/LAO heterostructures with non-uniformly atomic interfaces |
author |
Amoresi, Rafael A.C. [UNESP] |
author_facet |
Amoresi, Rafael A.C. [UNESP] Cichetto, Leonélio Gouveia, Amanda F. Colmenares, Yormary N. Teodoro, Marcio D. Marques, Gilmar E. Longo, Elson Simões, Alexandre Z. [UNESP] Andrés, Juan Chiquito, Adenilson J. Zaghete, Maria A. [UNESP] |
author_role |
author |
author2 |
Cichetto, Leonélio Gouveia, Amanda F. Colmenares, Yormary N. Teodoro, Marcio D. Marques, Gilmar E. Longo, Elson Simões, Alexandre Z. [UNESP] Andrés, Juan Chiquito, Adenilson J. Zaghete, Maria A. [UNESP] |
author2_role |
author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University Jaume I (UJI) Universidade Federal de São Carlos (UFSCar) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Amoresi, Rafael A.C. [UNESP] Cichetto, Leonélio Gouveia, Amanda F. Colmenares, Yormary N. Teodoro, Marcio D. Marques, Gilmar E. Longo, Elson Simões, Alexandre Z. [UNESP] Andrés, Juan Chiquito, Adenilson J. Zaghete, Maria A. [UNESP] |
dc.subject.por.fl_str_mv |
DFT calculations Electronic transport properties LaAlO3/SrTiO3 interface Thin film oxygen pressure Two-dimensional electron gas (2DEG) |
topic |
DFT calculations Electronic transport properties LaAlO3/SrTiO3 interface Thin film oxygen pressure Two-dimensional electron gas (2DEG) |
description |
The search for new and low-power switching devices involving the integration of semiconductor thin films is of interest, and has led to renewed research because such devices may exhibit innovative properties. Here, we investigate the two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface with metallic and insulator behavior. Insight is offered by quantifying the interface charge distribution associated with structural and electronic order-disorder effects. Variations in the electron conductivity were observed to be associated with different specific clustering arrangements of both Ti and Al cations of the co-exposed surfaces at the interface, i.e., structural and electronic connectivity among the undercoordinated [TiO5] and [AlO5] clusters. These results indicate facet control as a strategy for enhancing the electric and magnetic properties of a device via the quantum confinement of electrons. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:44:25Z 2020-12-12T02:44:25Z 2020-09-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.mtcomm.2020.101339 Materials Today Communications, v. 24. 2352-4928 http://hdl.handle.net/11449/201887 10.1016/j.mtcomm.2020.101339 2-s2.0-85086638484 |
url |
http://dx.doi.org/10.1016/j.mtcomm.2020.101339 http://hdl.handle.net/11449/201887 |
identifier_str_mv |
Materials Today Communications, v. 24. 2352-4928 10.1016/j.mtcomm.2020.101339 2-s2.0-85086638484 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Today Communications |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1799965403862007808 |