Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity

Detalhes bibliográficos
Autor(a) principal: Erichsen Junior, Rubem
Data de Publicação: 2013
Outros Autores: Theumann, Walter Karl, Magalhães, Sergio Garcia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/101841
Resumo: The phase diagrams of the three-state Ghatak-Sherrington spin-glass (or random Blume-Capel) model are obtained in mean-field theory with replica symmetry in order to study the effects of a ferromagnetic bias and finite random connectivity in which each spin is connected to a finite number of other spins. It is shown that inverse melting from a ferromagnetic to a low-temperature paramagnetic phase may appear for small but finite disorder and that inverse freezing appears for large disorder. There can also be a continuous inverse ferromagnetic to spin-glass transition.
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spelling Erichsen Junior, RubemTheumann, Walter KarlMagalhães, Sergio Garcia2014-08-26T09:26:21Z20131539-3755http://hdl.handle.net/10183/101841000897732The phase diagrams of the three-state Ghatak-Sherrington spin-glass (or random Blume-Capel) model are obtained in mean-field theory with replica symmetry in order to study the effects of a ferromagnetic bias and finite random connectivity in which each spin is connected to a finite number of other spins. It is shown that inverse melting from a ferromagnetic to a low-temperature paramagnetic phase may appear for small but finite disorder and that inverse freezing appears for large disorder. There can also be a continuous inverse ferromagnetic to spin-glass transition.application/pdfengPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 87, no. 1 (Jan. 2013), 012139, 4 p.FerromagnetismoParamagnetismoVidros de spinInverse melting and inverse freezing in a three-state spin-glass model with finite connectivityEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000897732.pdf000897732.pdfTexto completo (inglês)application/pdf165175http://www.lume.ufrgs.br/bitstream/10183/101841/1/000897732.pdfa5aaf8f5960efe45d85c0ff0fb70fc24MD51TEXT000897732.pdf.txt000897732.pdf.txtExtracted Texttext/plain19948http://www.lume.ufrgs.br/bitstream/10183/101841/2/000897732.pdf.txta4a7f5e468e8e5d07a719365eaf726dcMD52THUMBNAIL000897732.pdf.jpg000897732.pdf.jpgGenerated Thumbnailimage/jpeg2152http://www.lume.ufrgs.br/bitstream/10183/101841/3/000897732.pdf.jpgadc0c3d12b878932fc1f759ab5a033b6MD5310183/1018412024-09-11 06:15:01.760293oai:www.lume.ufrgs.br:10183/101841Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-09-11T09:15:01Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
title Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
spellingShingle Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
Erichsen Junior, Rubem
Ferromagnetismo
Paramagnetismo
Vidros de spin
title_short Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
title_full Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
title_fullStr Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
title_full_unstemmed Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
title_sort Inverse melting and inverse freezing in a three-state spin-glass model with finite connectivity
author Erichsen Junior, Rubem
author_facet Erichsen Junior, Rubem
Theumann, Walter Karl
Magalhães, Sergio Garcia
author_role author
author2 Theumann, Walter Karl
Magalhães, Sergio Garcia
author2_role author
author
dc.contributor.author.fl_str_mv Erichsen Junior, Rubem
Theumann, Walter Karl
Magalhães, Sergio Garcia
dc.subject.por.fl_str_mv Ferromagnetismo
Paramagnetismo
Vidros de spin
topic Ferromagnetismo
Paramagnetismo
Vidros de spin
description The phase diagrams of the three-state Ghatak-Sherrington spin-glass (or random Blume-Capel) model are obtained in mean-field theory with replica symmetry in order to study the effects of a ferromagnetic bias and finite random connectivity in which each spin is connected to a finite number of other spins. It is shown that inverse melting from a ferromagnetic to a low-temperature paramagnetic phase may appear for small but finite disorder and that inverse freezing appears for large disorder. There can also be a continuous inverse ferromagnetic to spin-glass transition.
publishDate 2013
dc.date.issued.fl_str_mv 2013
dc.date.accessioned.fl_str_mv 2014-08-26T09:26:21Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/101841
dc.identifier.issn.pt_BR.fl_str_mv 1539-3755
dc.identifier.nrb.pt_BR.fl_str_mv 000897732
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 87, no. 1 (Jan. 2013), 012139, 4 p.
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