Langevin simulations of stripe forming systems with long-range isotropic competing interactions

Detalhes bibliográficos
Autor(a) principal: Nicolao, Lucas
Data de Publicação: 2016
Outros Autores: Mendoza Coto, Alejandro, Stariolo, Daniel Adrian
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/149284
Resumo: We address the critical properties of the isotropic-nematic phase transition in stripe forming systems. We focus on isotropic models in which a short range attractive interaction competes with a long range repulsive interaction decaying as a power-law, paying particular attention to the cases in which this interaction is of dipolar or Coulomb types. Using Langevin dynamics simulations we show that these models belong to different universality classes. The numerical algorithms developed for each case are presented and discussed in detail. The obtained results are in agreement with recent theoretical predictions [1], according to which the orientational transition belongs to the Kosterlitz-Thouless universality class for dipolar systems, while it is of the second-order type for Coulomb systems.
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spelling Nicolao, LucasMendoza Coto, AlejandroStariolo, Daniel Adrian2016-10-27T02:19:59Z20161742-6588http://hdl.handle.net/10183/149284001003688We address the critical properties of the isotropic-nematic phase transition in stripe forming systems. We focus on isotropic models in which a short range attractive interaction competes with a long range repulsive interaction decaying as a power-law, paying particular attention to the cases in which this interaction is of dipolar or Coulomb types. Using Langevin dynamics simulations we show that these models belong to different universality classes. The numerical algorithms developed for each case are presented and discussed in detail. The obtained results are in agreement with recent theoretical predictions [1], according to which the orientational transition belongs to the Kosterlitz-Thouless universality class for dipolar systems, while it is of the second-order type for Coulomb systems.application/pdfengJournal of physics : conference series. Bristol. Vol. 686 (2016), 012005, 12 p.Equação de LangevinOrdem de longo alcanceInteracoes eletromagneticasTransformações de faseLangevin simulations of stripe forming systems with long-range isotropic competing interactionsEstrangeiroinfo: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:UFRGSORIGINAL001003688.pdf001003688.pdfTexto completo (inglês)application/pdf1508484http://www.lume.ufrgs.br/bitstream/10183/149284/1/001003688.pdf366efe29e1cc60da4751c0e2d9a10b22MD51TEXT001003688.pdf.txt001003688.pdf.txtExtracted Texttext/plain39082http://www.lume.ufrgs.br/bitstream/10183/149284/2/001003688.pdf.txt0dda7e66b270314cae5993a4a444a11dMD52THUMBNAIL001003688.pdf.jpg001003688.pdf.jpgGenerated Thumbnailimage/jpeg1159http://www.lume.ufrgs.br/bitstream/10183/149284/3/001003688.pdf.jpgc03b09807fa3d784f09278f0007acd78MD5310183/1492842018-10-29 09:18:31.58oai:www.lume.ufrgs.br:10183/149284Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-29T12:18:31Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Langevin simulations of stripe forming systems with long-range isotropic competing interactions
title Langevin simulations of stripe forming systems with long-range isotropic competing interactions
spellingShingle Langevin simulations of stripe forming systems with long-range isotropic competing interactions
Nicolao, Lucas
Equação de Langevin
Ordem de longo alcance
Interacoes eletromagneticas
Transformações de fase
title_short Langevin simulations of stripe forming systems with long-range isotropic competing interactions
title_full Langevin simulations of stripe forming systems with long-range isotropic competing interactions
title_fullStr Langevin simulations of stripe forming systems with long-range isotropic competing interactions
title_full_unstemmed Langevin simulations of stripe forming systems with long-range isotropic competing interactions
title_sort Langevin simulations of stripe forming systems with long-range isotropic competing interactions
author Nicolao, Lucas
author_facet Nicolao, Lucas
Mendoza Coto, Alejandro
Stariolo, Daniel Adrian
author_role author
author2 Mendoza Coto, Alejandro
Stariolo, Daniel Adrian
author2_role author
author
dc.contributor.author.fl_str_mv Nicolao, Lucas
Mendoza Coto, Alejandro
Stariolo, Daniel Adrian
dc.subject.por.fl_str_mv Equação de Langevin
Ordem de longo alcance
Interacoes eletromagneticas
Transformações de fase
topic Equação de Langevin
Ordem de longo alcance
Interacoes eletromagneticas
Transformações de fase
description We address the critical properties of the isotropic-nematic phase transition in stripe forming systems. We focus on isotropic models in which a short range attractive interaction competes with a long range repulsive interaction decaying as a power-law, paying particular attention to the cases in which this interaction is of dipolar or Coulomb types. Using Langevin dynamics simulations we show that these models belong to different universality classes. The numerical algorithms developed for each case are presented and discussed in detail. The obtained results are in agreement with recent theoretical predictions [1], according to which the orientational transition belongs to the Kosterlitz-Thouless universality class for dipolar systems, while it is of the second-order type for Coulomb systems.
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dc.date.accessioned.fl_str_mv 2016-10-27T02:19:59Z
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dc.identifier.issn.pt_BR.fl_str_mv 1742-6588
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Journal of physics : conference series. Bristol. Vol. 686 (2016), 012005, 12 p.
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