Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls
- Autores
- Araujo Velasque, Luciana; Stariolo, Daniel Adrian; Billoni, Orlando Vito
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a theoretical study aimed at elucidating the origin of the inverse symmetry-breaking transitionobserved in ultrathin magnetic films with perpendicular anisotropy. We study the behavior of the dipolar frustratedIsing model in a mean field approximation as well as two other models with simple domain walls. By a numericalanalysis we show that the internal degrees of freedom of the domain walls are decisive for the presence of theinverse symmetry-breaking transition. In particular, we show that in a sharp domain wall model the inversetransition is absent. At high temperatures the additional degrees of freedom of the extended domain wallsincrease the entropy of the system leading to a reduction of the free energy of the stripe phase. Upon lowering thetemperature the domain walls become narrow, and the reduction of the number of degrees of freedom associatedwith them manifests in a reduction of entropy which eventually induces an inverse transition to the competinghomogenous phase. We also show that, for a growing external field at constant temperature, the stripe widthgrows strongly when approaching the critical field line and diverges at the transition. These results indicate thatthe inverse transition is a continuous phase transition and that the domain wall profiles and the temperature havelittle effect on the critical behavior of the period of the domain as a function of the applied field.
Fil: Araujo Velasque, Luciana. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Stariolo, Daniel Adrian. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Billoni, Orlando Vito. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina - Materia
-
Inverse symmetry-breaking
Ultrathin
Magnetic
Films - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/31665
Ver los metadatos del registro completo
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Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain wallsAraujo Velasque, LucianaStariolo, Daniel AdrianBilloni, Orlando VitoInverse symmetry-breakingUltrathinMagneticFilmshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a theoretical study aimed at elucidating the origin of the inverse symmetry-breaking transitionobserved in ultrathin magnetic films with perpendicular anisotropy. We study the behavior of the dipolar frustratedIsing model in a mean field approximation as well as two other models with simple domain walls. By a numericalanalysis we show that the internal degrees of freedom of the domain walls are decisive for the presence of theinverse symmetry-breaking transition. In particular, we show that in a sharp domain wall model the inversetransition is absent. At high temperatures the additional degrees of freedom of the extended domain wallsincrease the entropy of the system leading to a reduction of the free energy of the stripe phase. Upon lowering thetemperature the domain walls become narrow, and the reduction of the number of degrees of freedom associatedwith them manifests in a reduction of entropy which eventually induces an inverse transition to the competinghomogenous phase. We also show that, for a growing external field at constant temperature, the stripe widthgrows strongly when approaching the critical field line and diverges at the transition. These results indicate thatthe inverse transition is a continuous phase transition and that the domain wall profiles and the temperature havelittle effect on the critical behavior of the period of the domain as a function of the applied field.Fil: Araujo Velasque, Luciana. Universidade Federal do Rio Grande do Sul; BrasilFil: Stariolo, Daniel Adrian. Universidade Federal do Rio Grande do Sul; BrasilFil: Billoni, Orlando Vito. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaAmerican Physical Society2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31665Billoni, Orlando Vito; Araujo Velasque, Luciana; Stariolo, Daniel Adrian; Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 21; 12-2014; 2144081-21440861098-0121CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.90.214408info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.214408info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:40:08Zoai:ri.conicet.gov.ar:11336/31665instacron: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 14:40:08.285CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
title |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
spellingShingle |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls Araujo Velasque, Luciana Inverse symmetry-breaking Ultrathin Magnetic Films |
title_short |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
title_full |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
title_fullStr |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
title_full_unstemmed |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
title_sort |
Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls |
dc.creator.none.fl_str_mv |
Araujo Velasque, Luciana Stariolo, Daniel Adrian Billoni, Orlando Vito |
author |
Araujo Velasque, Luciana |
author_facet |
Araujo Velasque, Luciana Stariolo, Daniel Adrian Billoni, Orlando Vito |
author_role |
author |
author2 |
Stariolo, Daniel Adrian Billoni, Orlando Vito |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Inverse symmetry-breaking Ultrathin Magnetic Films |
topic |
Inverse symmetry-breaking Ultrathin Magnetic Films |
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 present a theoretical study aimed at elucidating the origin of the inverse symmetry-breaking transitionobserved in ultrathin magnetic films with perpendicular anisotropy. We study the behavior of the dipolar frustratedIsing model in a mean field approximation as well as two other models with simple domain walls. By a numericalanalysis we show that the internal degrees of freedom of the domain walls are decisive for the presence of theinverse symmetry-breaking transition. In particular, we show that in a sharp domain wall model the inversetransition is absent. At high temperatures the additional degrees of freedom of the extended domain wallsincrease the entropy of the system leading to a reduction of the free energy of the stripe phase. Upon lowering thetemperature the domain walls become narrow, and the reduction of the number of degrees of freedom associatedwith them manifests in a reduction of entropy which eventually induces an inverse transition to the competinghomogenous phase. We also show that, for a growing external field at constant temperature, the stripe widthgrows strongly when approaching the critical field line and diverges at the transition. These results indicate thatthe inverse transition is a continuous phase transition and that the domain wall profiles and the temperature havelittle effect on the critical behavior of the period of the domain as a function of the applied field. Fil: Araujo Velasque, Luciana. Universidade Federal do Rio Grande do Sul; Brasil Fil: Stariolo, Daniel Adrian. Universidade Federal do Rio Grande do Sul; Brasil Fil: Billoni, Orlando Vito. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina |
description |
We present a theoretical study aimed at elucidating the origin of the inverse symmetry-breaking transitionobserved in ultrathin magnetic films with perpendicular anisotropy. We study the behavior of the dipolar frustratedIsing model in a mean field approximation as well as two other models with simple domain walls. By a numericalanalysis we show that the internal degrees of freedom of the domain walls are decisive for the presence of theinverse symmetry-breaking transition. In particular, we show that in a sharp domain wall model the inversetransition is absent. At high temperatures the additional degrees of freedom of the extended domain wallsincrease the entropy of the system leading to a reduction of the free energy of the stripe phase. Upon lowering thetemperature the domain walls become narrow, and the reduction of the number of degrees of freedom associatedwith them manifests in a reduction of entropy which eventually induces an inverse transition to the competinghomogenous phase. We also show that, for a growing external field at constant temperature, the stripe widthgrows strongly when approaching the critical field line and diverges at the transition. These results indicate thatthe inverse transition is a continuous phase transition and that the domain wall profiles and the temperature havelittle effect on the critical behavior of the period of the domain as a function of the applied field. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12 |
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/11336/31665 Billoni, Orlando Vito; Araujo Velasque, Luciana; Stariolo, Daniel Adrian; Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 21; 12-2014; 2144081-2144086 1098-0121 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/31665 |
identifier_str_mv |
Billoni, Orlando Vito; Araujo Velasque, Luciana; Stariolo, Daniel Adrian; Inverse transition in the dipolar frustrated Ising ferromagnet: The role of domain walls; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 90; 21; 12-2014; 2144081-2144086 1098-0121 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.90.214408 info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.214408 |
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 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_ |
1846082890851418112 |
score |
12.891075 |