4.7 Article

Nematic phase in stripe-forming systems within the self-consistent screening approximation

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PHYSICAL REVIEW E
卷 88, 期 6, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.88.062140

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  1. Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)

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We show that in order to describe the isotropic-nematic transition in stripe-forming systems with isotropic competing interactions of the Brazovskii class it is necessary to consider the next to leading order in a 1/N approximation for the effective Hamiltonian. This can be conveniently accomplished within the self-consistent screening approximation. We solve the relevant equations and show that the self-energy in this approximation is able to generate the essential wave vector dependence to account for the anisotropic character of a two-point correlation function characteristic of a nematic phase.

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