How reliable are Hanle measurements in metals in a three-terminal geometry?

Autores
Txoperena, Oihana; Gobbi, Marco; Bedoya Pinto, Amilcar; Golmar, Federico; Sun, Xiangnan; Hueso, Luis E.; Casanova, Félix
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We test the validity of Hanle measurements in three-terminal devices by using aluminum (Al) and gold (Au). The obtained Hanle and inverted Hanle-like curves show an anomalous behavior. First, we measure Hanle signals 8 orders of magnitude larger than those predicted by standard theory. Second, the temperature and voltage dependences of the signal do not match with the tunneling spin polarization of the ferromagnetic contact. Finally, the spin relaxation times obtained with this method are independent of the choice of the metallic channel. These results are not compatible with spin accumulation in the metal. Furthermore, a scaling of the Hanle signal with the interface resistance of the devices suggests that the measured signal is originated in the tunnel junction.
Fil: Txoperena, Oihana. CIC nanoGUNE; España
Fil: Gobbi, Marco. CIC nanoGUNE; España
Fil: Bedoya Pinto, Amilcar. CIC nanoGUNE; España
Fil: Golmar, Federico. CIC nanoGUNE; España. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sun, Xiangnan. CIC nanoGUNE; España
Fil: Hueso, Luis E.. Basque Foundation for Science; España. CIC nanoGUNE; España
Fil: Casanova, Félix. Basque Foundation for Science; España. CIC nanoGUNE; España
Materia
Hanle Effect
Magnetoelectronics
Ferromagnetic Materials
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:11336/24115
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/24115
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling How reliable are Hanle measurements in metals in a three-terminal geometry?Txoperena, OihanaGobbi, MarcoBedoya Pinto, AmilcarGolmar, FedericoSun, XiangnanHueso, Luis E.Casanova, FélixHanle EffectMagnetoelectronicsFerromagnetic Materialshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We test the validity of Hanle measurements in three-terminal devices by using aluminum (Al) and gold (Au). The obtained Hanle and inverted Hanle-like curves show an anomalous behavior. First, we measure Hanle signals 8 orders of magnitude larger than those predicted by standard theory. Second, the temperature and voltage dependences of the signal do not match with the tunneling spin polarization of the ferromagnetic contact. Finally, the spin relaxation times obtained with this method are independent of the choice of the metallic channel. These results are not compatible with spin accumulation in the metal. Furthermore, a scaling of the Hanle signal with the interface resistance of the devices suggests that the measured signal is originated in the tunnel junction.Fil: Txoperena, Oihana. CIC nanoGUNE; EspañaFil: Gobbi, Marco. CIC nanoGUNE; EspañaFil: Bedoya Pinto, Amilcar. CIC nanoGUNE; EspañaFil: Golmar, Federico. CIC nanoGUNE; España. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sun, Xiangnan. CIC nanoGUNE; EspañaFil: Hueso, Luis E.. Basque Foundation for Science; España. CIC nanoGUNE; EspañaFil: Casanova, Félix. Basque Foundation for Science; España. CIC nanoGUNE; EspañaAmerican Institute of Physics2013-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24115Txoperena, Oihana; Gobbi, Marco; Bedoya Pinto, Amilcar; Golmar, Federico; Sun, Xiangnan; et al.; How reliable are Hanle measurements in metals in a three-terminal geometry?; American Institute of Physics; Applied Physics Letters; 102; 19; 5-2013; 1-5; 1924060003-6951CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1063/1.4806987info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.4806987info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:14:26Zoai:ri.conicet.gov.ar:11336/24115instacron: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:34982025-10-22 11:14:26.962CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv How reliable are Hanle measurements in metals in a three-terminal geometry?
title How reliable are Hanle measurements in metals in a three-terminal geometry?
spellingShingle How reliable are Hanle measurements in metals in a three-terminal geometry?
Txoperena, Oihana
Hanle Effect
Magnetoelectronics
Ferromagnetic Materials
title_short How reliable are Hanle measurements in metals in a three-terminal geometry?
title_full How reliable are Hanle measurements in metals in a three-terminal geometry?
title_fullStr How reliable are Hanle measurements in metals in a three-terminal geometry?
title_full_unstemmed How reliable are Hanle measurements in metals in a three-terminal geometry?
title_sort How reliable are Hanle measurements in metals in a three-terminal geometry?
dc.creator.none.fl_str_mv Txoperena, Oihana
Gobbi, Marco
Bedoya Pinto, Amilcar
Golmar, Federico
Sun, Xiangnan
Hueso, Luis E.
Casanova, Félix
author Txoperena, Oihana
author_facet Txoperena, Oihana
Gobbi, Marco
Bedoya Pinto, Amilcar
Golmar, Federico
Sun, Xiangnan
Hueso, Luis E.
Casanova, Félix
author_role author
author2 Gobbi, Marco
Bedoya Pinto, Amilcar
Golmar, Federico
Sun, Xiangnan
Hueso, Luis E.
Casanova, Félix
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Hanle Effect
Magnetoelectronics
Ferromagnetic Materials
topic Hanle Effect
Magnetoelectronics
Ferromagnetic Materials
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We test the validity of Hanle measurements in three-terminal devices by using aluminum (Al) and gold (Au). The obtained Hanle and inverted Hanle-like curves show an anomalous behavior. First, we measure Hanle signals 8 orders of magnitude larger than those predicted by standard theory. Second, the temperature and voltage dependences of the signal do not match with the tunneling spin polarization of the ferromagnetic contact. Finally, the spin relaxation times obtained with this method are independent of the choice of the metallic channel. These results are not compatible with spin accumulation in the metal. Furthermore, a scaling of the Hanle signal with the interface resistance of the devices suggests that the measured signal is originated in the tunnel junction.
Fil: Txoperena, Oihana. CIC nanoGUNE; España
Fil: Gobbi, Marco. CIC nanoGUNE; España
Fil: Bedoya Pinto, Amilcar. CIC nanoGUNE; España
Fil: Golmar, Federico. CIC nanoGUNE; España. Instituto Nacional de Tecnología Industrial; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sun, Xiangnan. CIC nanoGUNE; España
Fil: Hueso, Luis E.. Basque Foundation for Science; España. CIC nanoGUNE; España
Fil: Casanova, Félix. Basque Foundation for Science; España. CIC nanoGUNE; España
description We test the validity of Hanle measurements in three-terminal devices by using aluminum (Al) and gold (Au). The obtained Hanle and inverted Hanle-like curves show an anomalous behavior. First, we measure Hanle signals 8 orders of magnitude larger than those predicted by standard theory. Second, the temperature and voltage dependences of the signal do not match with the tunneling spin polarization of the ferromagnetic contact. Finally, the spin relaxation times obtained with this method are independent of the choice of the metallic channel. These results are not compatible with spin accumulation in the metal. Furthermore, a scaling of the Hanle signal with the interface resistance of the devices suggests that the measured signal is originated in the tunnel junction.
publishDate 2013
dc.date.none.fl_str_mv 2013-05
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/11336/24115
Txoperena, Oihana; Gobbi, Marco; Bedoya Pinto, Amilcar; Golmar, Federico; Sun, Xiangnan; et al.; How reliable are Hanle measurements in metals in a three-terminal geometry?; American Institute of Physics; Applied Physics Letters; 102; 19; 5-2013; 1-5; 192406
0003-6951
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24115
identifier_str_mv Txoperena, Oihana; Gobbi, Marco; Bedoya Pinto, Amilcar; Golmar, Federico; Sun, Xiangnan; et al.; How reliable are Hanle measurements in metals in a three-terminal geometry?; American Institute of Physics; Applied Physics Letters; 102; 19; 5-2013; 1-5; 192406
0003-6951
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4806987
info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/10.1063/1.4806987
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
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: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_ 1846781564744105984
score 12.982451

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