Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction

Autores
Ungar, Florian; Cygorek, Moritz; Tamborenea, Pablo Ignacio; Axt, Vollrath Martin
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study theoretically the ultrafast spin dynamics of II-VI diluted magnetic semiconductors in the presence of spin-orbit interaction. Our goal is to explore the interplay or competition between the exchange sd coupling and the spin-orbit interaction in both bulk and quantum-well systems. For bulk materials we concentrate on Zn 1 − x Mn x Se and take into account the Dresselhaus interaction, while for quantum wells we examine Hg 1 − x − y Mn x Cd y Te systems with a strong Rashba coupling. Our calculations were performed with a recently developed formalism which incorporates electronic correlations beyond mean-field theory originating from the exchange sd coupling. For both bulk and quasi-two-dimensional systems we find that, by varying the system parameters within realistic ranges, either of the two interactions can be chosen to play a dominant role or they can compete on an equal footing with each other. The most notable effect of the spin-orbit interaction in both types of system is the appearance of strong oscillations where the exchange sd coupling by itself causes only an exponential decay of the mean electronic spin components. The mean-field approximation is also studied and an analytical interpretation is given as to why it shows a strong suppression of the spin-orbit-induced dephasing of the spin component parallel to the Mn magnetic field.
Fil: Ungar, Florian. University of Bayreuth; Alemania
Fil: Cygorek, Moritz. University of Bayreuth; Alemania
Fil: Tamborenea, Pablo Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Axt, Vollrath Martin. University of Bayreuth; Alemania
Materia
DILUTED MAGNETIC SEMICONDUCTORS
SPIN-ORBIT INTERACTION
ULTRAFAST DYNAMICS
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:11336/44196
Acceder
id CONICETDig_6c486c3951f28399c6a7ad8b9323b928
oai_identifier_str oai:ri.conicet.gov.ar:11336/44196
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interactionUngar, FlorianCygorek, MoritzTamborenea, Pablo IgnacioAxt, Vollrath MartinDILUTED MAGNETIC SEMICONDUCTORSSPIN-ORBIT INTERACTIONULTRAFAST DYNAMICShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study theoretically the ultrafast spin dynamics of II-VI diluted magnetic semiconductors in the presence of spin-orbit interaction. Our goal is to explore the interplay or competition between the exchange sd coupling and the spin-orbit interaction in both bulk and quantum-well systems. For bulk materials we concentrate on Zn 1 − x Mn x Se and take into account the Dresselhaus interaction, while for quantum wells we examine Hg 1 − x − y Mn x Cd y Te systems with a strong Rashba coupling. Our calculations were performed with a recently developed formalism which incorporates electronic correlations beyond mean-field theory originating from the exchange sd coupling. For both bulk and quasi-two-dimensional systems we find that, by varying the system parameters within realistic ranges, either of the two interactions can be chosen to play a dominant role or they can compete on an equal footing with each other. The most notable effect of the spin-orbit interaction in both types of system is the appearance of strong oscillations where the exchange sd coupling by itself causes only an exponential decay of the mean electronic spin components. The mean-field approximation is also studied and an analytical interpretation is given as to why it shows a strong suppression of the spin-orbit-induced dephasing of the spin component parallel to the Mn magnetic field.Fil: Ungar, Florian. University of Bayreuth; AlemaniaFil: Cygorek, Moritz. University of Bayreuth; AlemaniaFil: Tamborenea, Pablo Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Axt, Vollrath Martin. University of Bayreuth; AlemaniaAmerican Physical Society2015-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/44196Ungar, Florian; Cygorek, Moritz; Tamborenea, Pablo Ignacio; Axt, Vollrath Martin; Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction; American Physical Society; Physical Review B; 91; 19; 5-2015; 1-8; 1952012469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.195201info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.91.195201info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1503.01937info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:39:53Zoai:ri.conicet.gov.ar:11336/44196instacron: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:34982025-10-15 14:39:53.724CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
title Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
spellingShingle Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
Ungar, Florian
DILUTED MAGNETIC SEMICONDUCTORS
SPIN-ORBIT INTERACTION
ULTRAFAST DYNAMICS
title_short Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
title_full Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
title_fullStr Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
title_full_unstemmed Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
title_sort Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction
dc.creator.none.fl_str_mv Ungar, Florian
Cygorek, Moritz
Tamborenea, Pablo Ignacio
Axt, Vollrath Martin
author Ungar, Florian
author_facet Ungar, Florian
Cygorek, Moritz
Tamborenea, Pablo Ignacio
Axt, Vollrath Martin
author_role author
author2 Cygorek, Moritz
Tamborenea, Pablo Ignacio
Axt, Vollrath Martin
author2_role author
author
author
dc.subject.none.fl_str_mv DILUTED MAGNETIC SEMICONDUCTORS
SPIN-ORBIT INTERACTION
ULTRAFAST DYNAMICS
topic DILUTED MAGNETIC SEMICONDUCTORS
SPIN-ORBIT INTERACTION
ULTRAFAST DYNAMICS
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 study theoretically the ultrafast spin dynamics of II-VI diluted magnetic semiconductors in the presence of spin-orbit interaction. Our goal is to explore the interplay or competition between the exchange sd coupling and the spin-orbit interaction in both bulk and quantum-well systems. For bulk materials we concentrate on Zn 1 − x Mn x Se and take into account the Dresselhaus interaction, while for quantum wells we examine Hg 1 − x − y Mn x Cd y Te systems with a strong Rashba coupling. Our calculations were performed with a recently developed formalism which incorporates electronic correlations beyond mean-field theory originating from the exchange sd coupling. For both bulk and quasi-two-dimensional systems we find that, by varying the system parameters within realistic ranges, either of the two interactions can be chosen to play a dominant role or they can compete on an equal footing with each other. The most notable effect of the spin-orbit interaction in both types of system is the appearance of strong oscillations where the exchange sd coupling by itself causes only an exponential decay of the mean electronic spin components. The mean-field approximation is also studied and an analytical interpretation is given as to why it shows a strong suppression of the spin-orbit-induced dephasing of the spin component parallel to the Mn magnetic field.
Fil: Ungar, Florian. University of Bayreuth; Alemania
Fil: Cygorek, Moritz. University of Bayreuth; Alemania
Fil: Tamborenea, Pablo Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Axt, Vollrath Martin. University of Bayreuth; Alemania
description We study theoretically the ultrafast spin dynamics of II-VI diluted magnetic semiconductors in the presence of spin-orbit interaction. Our goal is to explore the interplay or competition between the exchange sd coupling and the spin-orbit interaction in both bulk and quantum-well systems. For bulk materials we concentrate on Zn 1 − x Mn x Se and take into account the Dresselhaus interaction, while for quantum wells we examine Hg 1 − x − y Mn x Cd y Te systems with a strong Rashba coupling. Our calculations were performed with a recently developed formalism which incorporates electronic correlations beyond mean-field theory originating from the exchange sd coupling. For both bulk and quasi-two-dimensional systems we find that, by varying the system parameters within realistic ranges, either of the two interactions can be chosen to play a dominant role or they can compete on an equal footing with each other. The most notable effect of the spin-orbit interaction in both types of system is the appearance of strong oscillations where the exchange sd coupling by itself causes only an exponential decay of the mean electronic spin components. The mean-field approximation is also studied and an analytical interpretation is given as to why it shows a strong suppression of the spin-orbit-induced dephasing of the spin component parallel to the Mn magnetic field.
publishDate 2015
dc.date.none.fl_str_mv 2015-05
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/11336/44196
Ungar, Florian; Cygorek, Moritz; Tamborenea, Pablo Ignacio; Axt, Vollrath Martin; Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction; American Physical Society; Physical Review B; 91; 19; 5-2015; 1-8; 195201
2469-9969
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44196
identifier_str_mv Ungar, Florian; Cygorek, Moritz; Tamborenea, Pablo Ignacio; Axt, Vollrath Martin; Ultrafast spin dynamics in II-VI diluted magnetic semiconductors with spin-orbit interaction; American Physical Society; Physical Review B; 91; 19; 5-2015; 1-8; 195201
2469-9969
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.195201
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.91.195201
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1503.01937
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
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
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_ 1846082887132119040
score 13.22299

Publicaciones similares