Current induced domain wall motion in GaMnAs close to the Curie temperature

Autores
Jeudy, V; Curiale, Carlos Javier; Adam, J. P.; Thiaville, A.; Lemaître, A.; Faini, G.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Domain wall dynamics produced by spin transfer torques is investigated in (Ga, Mn)As ferromagnetic semiconducting tracks with perpendicular anisotropy, close to the Curie temperature. The domain wall velocities are found to follow a linear flow regime which only slightly varies with temperature. Using the Döring inequality, boundaries of the spin polarization of the current are deduced. A comparison with the predictions of the mean field k.p theory leads to an estimation of the carrier density whose value is compatible with results published in the literature. The spin polarization of the current and the magnetization of the magnetic atoms present similar temperature variations. This leads to a weak temperature dependence of the spin drift velocity and thus of the domain wall velocity. A combined study of field- and current-driven motion and deformation of magnetic domains reveals a motion of domain walls in the steady state regime without transition to the precessional regime. The ratio between the non-adiabatic torque \beta and the Gilbert damping factor \alpha is shown to remain close to unity.
Fil: Jeudy, V. Université Paris Sud; Francia. Cergy-paris Universite (cergy-paris Universite); Francia
Fil: Curiale, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Centre National de la Recherche Scientifique; Francia. Université Paris Sud; Francia
Fil: Adam, J. P.. Université Paris Sud; Francia
Fil: Thiaville, A.. Université Paris Sud; Francia
Fil: Lemaître, A.. Centre National de la Recherche Scientifique; Francia
Fil: Faini, G.. Centre National de la Recherche Scientifique; Francia
Materia
GaMnAs
DOMAIN WALL MOTION
MAGNETIC SEMICONDUCTORS
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:11336/278381
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/278381
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Current induced domain wall motion in GaMnAs close to the Curie temperatureJeudy, VCuriale, Carlos JavierAdam, J. P.Thiaville, A.Lemaître, A.Faini, G.GaMnAsDOMAIN WALL MOTIONMAGNETIC SEMICONDUCTORShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Domain wall dynamics produced by spin transfer torques is investigated in (Ga, Mn)As ferromagnetic semiconducting tracks with perpendicular anisotropy, close to the Curie temperature. The domain wall velocities are found to follow a linear flow regime which only slightly varies with temperature. Using the Döring inequality, boundaries of the spin polarization of the current are deduced. A comparison with the predictions of the mean field k.p theory leads to an estimation of the carrier density whose value is compatible with results published in the literature. The spin polarization of the current and the magnetization of the magnetic atoms present similar temperature variations. This leads to a weak temperature dependence of the spin drift velocity and thus of the domain wall velocity. A combined study of field- and current-driven motion and deformation of magnetic domains reveals a motion of domain walls in the steady state regime without transition to the precessional regime. The ratio between the non-adiabatic torque \beta and the Gilbert damping factor \alpha is shown to remain close to unity.Fil: Jeudy, V. Université Paris Sud; Francia. Cergy-paris Universite (cergy-paris Universite); FranciaFil: Curiale, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Centre National de la Recherche Scientifique; Francia. Université Paris Sud; FranciaFil: Adam, J. P.. Université Paris Sud; FranciaFil: Thiaville, A.. Université Paris Sud; FranciaFil: Lemaître, A.. Centre National de la Recherche Scientifique; FranciaFil: Faini, G.. Centre National de la Recherche Scientifique; FranciaIOP Publishing2011-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278381Jeudy, V; Curiale, Carlos Javier; Adam, J. P.; Thiaville, A.; Lemaître, A.; et al.; Current induced domain wall motion in GaMnAs close to the Curie temperature; IOP Publishing; Journal of Physics: Condensed Matter; 23; 44; 10-2011; 1-70953-8984CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/0953-8984/23/44/446004info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/23/44/446004info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T12:22:38Zoai:ri.conicet.gov.ar:11336/278381instacron: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:34982026-02-06 12:22:38.723CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Current induced domain wall motion in GaMnAs close to the Curie temperature
title Current induced domain wall motion in GaMnAs close to the Curie temperature
spellingShingle Current induced domain wall motion in GaMnAs close to the Curie temperature
Jeudy, V
GaMnAs
DOMAIN WALL MOTION
MAGNETIC SEMICONDUCTORS
title_short Current induced domain wall motion in GaMnAs close to the Curie temperature
title_full Current induced domain wall motion in GaMnAs close to the Curie temperature
title_fullStr Current induced domain wall motion in GaMnAs close to the Curie temperature
title_full_unstemmed Current induced domain wall motion in GaMnAs close to the Curie temperature
title_sort Current induced domain wall motion in GaMnAs close to the Curie temperature
dc.creator.none.fl_str_mv Jeudy, V
Curiale, Carlos Javier
Adam, J. P.
Thiaville, A.
Lemaître, A.
Faini, G.
author Jeudy, V
author_facet Jeudy, V
Curiale, Carlos Javier
Adam, J. P.
Thiaville, A.
Lemaître, A.
Faini, G.
author_role author
author2 Curiale, Carlos Javier
Adam, J. P.
Thiaville, A.
Lemaître, A.
Faini, G.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv GaMnAs
DOMAIN WALL MOTION
MAGNETIC SEMICONDUCTORS
topic GaMnAs
DOMAIN WALL MOTION
MAGNETIC SEMICONDUCTORS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Domain wall dynamics produced by spin transfer torques is investigated in (Ga, Mn)As ferromagnetic semiconducting tracks with perpendicular anisotropy, close to the Curie temperature. The domain wall velocities are found to follow a linear flow regime which only slightly varies with temperature. Using the Döring inequality, boundaries of the spin polarization of the current are deduced. A comparison with the predictions of the mean field k.p theory leads to an estimation of the carrier density whose value is compatible with results published in the literature. The spin polarization of the current and the magnetization of the magnetic atoms present similar temperature variations. This leads to a weak temperature dependence of the spin drift velocity and thus of the domain wall velocity. A combined study of field- and current-driven motion and deformation of magnetic domains reveals a motion of domain walls in the steady state regime without transition to the precessional regime. The ratio between the non-adiabatic torque \beta and the Gilbert damping factor \alpha is shown to remain close to unity.
Fil: Jeudy, V. Université Paris Sud; Francia. Cergy-paris Universite (cergy-paris Universite); Francia
Fil: Curiale, Carlos Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Centre National de la Recherche Scientifique; Francia. Université Paris Sud; Francia
Fil: Adam, J. P.. Université Paris Sud; Francia
Fil: Thiaville, A.. Université Paris Sud; Francia
Fil: Lemaître, A.. Centre National de la Recherche Scientifique; Francia
Fil: Faini, G.. Centre National de la Recherche Scientifique; Francia
description Domain wall dynamics produced by spin transfer torques is investigated in (Ga, Mn)As ferromagnetic semiconducting tracks with perpendicular anisotropy, close to the Curie temperature. The domain wall velocities are found to follow a linear flow regime which only slightly varies with temperature. Using the Döring inequality, boundaries of the spin polarization of the current are deduced. A comparison with the predictions of the mean field k.p theory leads to an estimation of the carrier density whose value is compatible with results published in the literature. The spin polarization of the current and the magnetization of the magnetic atoms present similar temperature variations. This leads to a weak temperature dependence of the spin drift velocity and thus of the domain wall velocity. A combined study of field- and current-driven motion and deformation of magnetic domains reveals a motion of domain walls in the steady state regime without transition to the precessional regime. The ratio between the non-adiabatic torque \beta and the Gilbert damping factor \alpha is shown to remain close to unity.
publishDate 2011
dc.date.none.fl_str_mv 2011-10
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/11336/278381
Jeudy, V; Curiale, Carlos Javier; Adam, J. P.; Thiaville, A.; Lemaître, A.; et al.; Current induced domain wall motion in GaMnAs close to the Curie temperature; IOP Publishing; Journal of Physics: Condensed Matter; 23; 44; 10-2011; 1-7
0953-8984
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278381
identifier_str_mv Jeudy, V; Curiale, Carlos Javier; Adam, J. P.; Thiaville, A.; Lemaître, A.; et al.; Current induced domain wall motion in GaMnAs close to the Curie temperature; IOP Publishing; Journal of Physics: Condensed Matter; 23; 44; 10-2011; 1-7
0953-8984
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://iopscience.iop.org/article/10.1088/0953-8984/23/44/446004
info:eu-repo/semantics/altIdentifier/doi/10.1088/0953-8984/23/44/446004
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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
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score 13.106097

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