Topology and nematic ordering. II. Observable critical behavior

John Toner, Paul E. Lammert, Daniel S. Rokhsar

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


This paper is the second in a pair treating a lattice model for nematic media. In addition to the familiar isotropic (I) and nematically ordered (N) phases, the phase diagram established in the previous paper (paper I) contains a new, topologically ordered phase (T) occurring at large suppression of topological defects and weak nematic interactions. This paper (paper II) is concerned with the experimental signatures of the proposed phase diagram. Specific heat, light scattering, and magnetic susceptibility near both the N-T and I-T transitions are studied and critical behavior is determined. The singular dependences of the Frank constants K1,K2,K3 and the dielectric tensor anisotropy Δε on temperature as T→TNT- are also found.

Original languageEnglish (US)
Pages (from-to)1801-1810
Number of pages10
JournalPhysical Review E
Issue number2
StatePublished - 1995

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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