Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis

The following article appeared in Applied Physics Letters 102.9 (2013): 092404 and may be found at http://scitation.aip.org/content/aip/journal/apl/102/9/10.1063/1.4794537

Detalhes bibliográficos
Autores: Cascales, Juan Pedro, Sambricio, J. L., Herranz, D., Ebels, U., Katine, J.A., Aliev Kazanski, Farkhad
Tipo de documento: artigo
Data de publicação:2013
País:España
Recursos:Universidad Autónoma de Madrid
Repositório:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglês
OAI Identifier:oai:repositorio.uam.es:10486/662070
Acesso em linha:http://hdl.handle.net/10486/662070
https://dx.doi.org/10.1063/1.4794537
Access Level:Acceso aberto
Palavra-chave:Magnetic tunnel junctions
Electrodes
Magnetization reversals
Torque
Current density
Física
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spelling Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axisCascales, Juan PedroSambricio, J. L.Herranz, D.Ebels, U.Katine, J.A.Aliev Kazanski, FarkhadMagnetic tunnel junctionsElectrodesMagnetization reversalsTorqueCurrent densityFísicaThe following article appeared in Applied Physics Letters 102.9 (2013): 092404 and may be found at http://scitation.aip.org/content/aip/journal/apl/102/9/10.1063/1.4794537We report on room temperature magnetoresistance and low frequency noise in sub-100 nm elliptic CoFeB/MgO/CoFeB magnetic tunnel junctions with ultrathin (0.9 nm) barriers. For magnetic fields applied along the hard axis, we observe current induced magnetization switching between the antiparallel and parallel alignments at dc current densities as low as 4 × 106 A/cm2. We attribute the low value of the critical current to the influence of localized reductions in the tunnel barrier, which affects the current distribution. The analysis of random telegraph noise, which appears in the field interval near a magnetization switch, provides an estimate to the dimension of the pseudo pinholes that trigger the magnetization switching via local spin torque. Micromagnetic simulations qualitatively and quantitatively reproduce the main experimental observationsThis work has been supported by the Spanish MINECO (MAT2012-32743, CONSOLIDER CSD2007-00010) and Comunidad de Madrid (P2009/MAT-1726) grants, as well as by the French National Research Agency ANR (MILESTONE ANR-09-NANO-037).American Institute of PhysicsDepartamento de Física de la Materia CondensadaFacultad de Ciencias20132013-03-06research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/662070https://dx.doi.org/10.1063/1.4794537reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6620702026-06-23T12:46:27Z
dc.title.none.fl_str_mv Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
title Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
spellingShingle Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
Cascales, Juan Pedro
Magnetic tunnel junctions
Electrodes
Magnetization reversals
Torque
Current density
Física
title_short Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
title_full Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
title_fullStr Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
title_full_unstemmed Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
title_sort Magnetization reversal in sub-100 nm magnetic tunnel junctions with ultrathin MgO barrier biased along the hard axis
dc.creator.none.fl_str_mv Cascales, Juan Pedro
Sambricio, J. L.
Herranz, D.
Ebels, U.
Katine, J.A.
Aliev Kazanski, Farkhad
author Cascales, Juan Pedro
author_facet Cascales, Juan Pedro
Sambricio, J. L.
Herranz, D.
Ebels, U.
Katine, J.A.
Aliev Kazanski, Farkhad
author_role author
author2 Sambricio, J. L.
Herranz, D.
Ebels, U.
Katine, J.A.
Aliev Kazanski, Farkhad
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física de la Materia Condensada
Facultad de Ciencias
dc.subject.none.fl_str_mv Magnetic tunnel junctions
Electrodes
Magnetization reversals
Torque
Current density
Física
topic Magnetic tunnel junctions
Electrodes
Magnetization reversals
Torque
Current density
Física
description The following article appeared in Applied Physics Letters 102.9 (2013): 092404 and may be found at http://scitation.aip.org/content/aip/journal/apl/102/9/10.1063/1.4794537
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-03-06
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/662070
https://dx.doi.org/10.1063/1.4794537
url http://hdl.handle.net/10486/662070
https://dx.doi.org/10.1063/1.4794537
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 Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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