Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions

Under the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al.

Detalles Bibliográficos
Autores: Bellouard, C., Bonell, Fréderic, Tiusan, C.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/127277
Acceso en línea:http://hdl.handle.net/10261/127277
Access Level:acceso abierto
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spelling Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctionsBellouard, C.Bonell, FrédericTiusan, C.Under the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al.Interfacial effects on spin and symmetry filtering in single-crystal Fe(001)/MgO/Fe magnetic tunnel junctions are investigated with the insertion of a Fe monoatomic step at the bottom MgO interface. After annealing, the atomically flat bottom electrode is covered by a fractional part of a Fe monoatomic layer resulting in two-dimensional Fe islands that are separated for low coverages and percolated above around half a monolayer. The magnetotransport properties of the junctions are studied as a function of this Fe sublayer coverage that is varied from 0 to 1 monolayer. Surprisingly, the magnetoresistance ratio exhibits a maximum for a coverage around half a monolayer. Tunneling spectroscopy experiments performed at low temperature allow relating this result to the decrease of the contribution of the interfacial resonance state to the conductance of the junction.C.T. acknowledges the following projects: SPINCHAT (ANR-07-BLAN-341), POS CCE ID.574, code SMIS-CSNR 12467, and the Exploratory Research Project, “SPINTAIL” PN-II-ID-PCE-2012-4-0315, No. 23/29.08.2013.Peer ReviewedAmerican Physical SocietyUniversité de Lorraine (France)Technical University of Cluj-NapocaCentre National de la Recherche Scientifique (France)Agence Nationale de la Recherche (France)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2016201620152016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/127277reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevB.91.174403Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1272772026-05-22T06:33:51Z
dc.title.none.fl_str_mv Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
title Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
spellingShingle Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
Bellouard, C.
title_short Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
title_full Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
title_fullStr Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
title_full_unstemmed Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
title_sort Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions
dc.creator.none.fl_str_mv Bellouard, C.
Bonell, Fréderic
Tiusan, C.
author Bellouard, C.
author_facet Bellouard, C.
Bonell, Fréderic
Tiusan, C.
author_role author
author2 Bonell, Fréderic
Tiusan, C.
author2_role author
author
dc.contributor.none.fl_str_mv Université de Lorraine (France)
Technical University of Cluj-Napoca
Centre National de la Recherche Scientifique (France)
Agence Nationale de la Recherche (France)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description Under the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/127277
url http://hdl.handle.net/10261/127277
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.91.174403
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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