Competing interactions, the renormalization group, and the isotropic-nematic phase transition

Detalhes bibliográficos
Autor(a) principal: Barci, Daniel G.
Data de Publicação: 2007
Outros Autores: Stariolo, Daniel Adrian
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/99399
Resumo: We discuss 2D systems with Ising symmetry and competing interactions at different scales. In the framework of the renormalization group, we study the effect of relevant quartic interactions. In addition to the usual constant interaction term, we analyze the effect of quadrupole interactions in the self-consistent Hartree approximation. We show that in the case of a repulsive quadrupole interaction, there is a firstorder phase transition to a stripe phase in agreement with the well-known Brazovskii result. However, in the case of attractive quadrupole interactions there is an isotropic-nematic second-order transition with higher critical temperature.
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spelling Barci, Daniel G.Stariolo, Daniel Adrian2014-08-09T02:11:33Z20070031-9007http://hdl.handle.net/10183/99399000603158We discuss 2D systems with Ising symmetry and competing interactions at different scales. In the framework of the renormalization group, we study the effect of relevant quartic interactions. In addition to the usual constant interaction term, we analyze the effect of quadrupole interactions in the self-consistent Hartree approximation. We show that in the case of a repulsive quadrupole interaction, there is a firstorder phase transition to a stripe phase in agreement with the well-known Brazovskii result. However, in the case of attractive quadrupole interactions there is an isotropic-nematic second-order transition with higher critical temperature.application/pdfengPhysical Review Letters. Woodbury. Vol. 98, no. 20 (May 2007), 200604, 4p.Transformações de faseBosonsMetaestabilidadeLíquidosCristaisCompeting interactions, the renormalization group, and the isotropic-nematic phase transitionEstrangeiroinfo: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:UFRGSORIGINAL000603158.pdf000603158.pdfTexto completo (inglês)application/pdf91295http://www.lume.ufrgs.br/bitstream/10183/99399/1/000603158.pdf1e6294d4965b8f85056f5ef185e3ffd2MD51TEXT000603158.pdf.txt000603158.pdf.txtExtracted Texttext/plain21351http://www.lume.ufrgs.br/bitstream/10183/99399/2/000603158.pdf.txt5df46323e344019ff38ce7725cdbd30aMD52THUMBNAIL000603158.pdf.jpg000603158.pdf.jpgGenerated Thumbnailimage/jpeg2066http://www.lume.ufrgs.br/bitstream/10183/99399/3/000603158.pdf.jpg11d589c0274bda01a33434eef5af694dMD5310183/993992021-05-26 04:42:06.614541oai:www.lume.ufrgs.br:10183/99399Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-05-26T07:42:06Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Competing interactions, the renormalization group, and the isotropic-nematic phase transition
title Competing interactions, the renormalization group, and the isotropic-nematic phase transition
spellingShingle Competing interactions, the renormalization group, and the isotropic-nematic phase transition
Barci, Daniel G.
Transformações de fase
Bosons
Metaestabilidade
Líquidos
Cristais
title_short Competing interactions, the renormalization group, and the isotropic-nematic phase transition
title_full Competing interactions, the renormalization group, and the isotropic-nematic phase transition
title_fullStr Competing interactions, the renormalization group, and the isotropic-nematic phase transition
title_full_unstemmed Competing interactions, the renormalization group, and the isotropic-nematic phase transition
title_sort Competing interactions, the renormalization group, and the isotropic-nematic phase transition
author Barci, Daniel G.
author_facet Barci, Daniel G.
Stariolo, Daniel Adrian
author_role author
author2 Stariolo, Daniel Adrian
author2_role author
dc.contributor.author.fl_str_mv Barci, Daniel G.
Stariolo, Daniel Adrian
dc.subject.por.fl_str_mv Transformações de fase
Bosons
Metaestabilidade
Líquidos
Cristais
topic Transformações de fase
Bosons
Metaestabilidade
Líquidos
Cristais
description We discuss 2D systems with Ising symmetry and competing interactions at different scales. In the framework of the renormalization group, we study the effect of relevant quartic interactions. In addition to the usual constant interaction term, we analyze the effect of quadrupole interactions in the self-consistent Hartree approximation. We show that in the case of a repulsive quadrupole interaction, there is a firstorder phase transition to a stripe phase in agreement with the well-known Brazovskii result. However, in the case of attractive quadrupole interactions there is an isotropic-nematic second-order transition with higher critical temperature.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-08-09T02:11:33Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/99399
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dc.identifier.nrb.pt_BR.fl_str_mv 000603158
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url http://hdl.handle.net/10183/99399
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical Review Letters. Woodbury. Vol. 98, no. 20 (May 2007), 200604, 4p.
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