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dc.contributor.authorMendoza Coto, Alejandropt_BR
dc.contributor.authorStariolo, Daniel Adrianpt_BR
dc.date.accessioned2014-08-26T09:26:42Zpt_BR
dc.date.issued2012pt_BR
dc.identifier.issn1539-3755pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/101886pt_BR
dc.description.abstractTwo coarse-grained models which capture some universal characteristics of stripe forming systems are studied. At high temperatures, the structure factors of both models attain their maxima on a circle in reciprocal space, as a consequence of generic isotropic competing interactions. Although this is known to lead to some universal properties, we show that the phase diagrams have important differences, which are a consequence of the particular k dependence of the fluctuation spectrum in each model. The phase diagrams are computed in a mean field approximation and also after inclusion of small fluctuations, which are shown to modify drastically the mean field behavior. Observables like the modulation length and magnetization profiles are computed for the whole temperature range accessible to both models and some important differences in behavior are observed. A stripe compression modulus is computed, showing an anomalous behavior with temperature as recently reported in related models. Also, a recently proposed scaling hypothesis for modulated systems is tested and found to be valid for both models studied.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. E, Statistical, nonlinear, and soft matter physics. Vol. 86, no. 5 (Nov. 2012), 051130, 9 p.pt_BR
dc.rightsOpen Accessen
dc.subjectCompressibilidadept_BR
dc.subjectFlutuaçõespt_BR
dc.subjectMagnetizaçãopt_BR
dc.subjectDiagramas de fasept_BR
dc.titleCoarse-grained models of stripe forming systems : phase diagrams, anomalies, and scaling hypothesispt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000869460pt_BR
dc.type.originEstrangeiropt_BR


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