Nonuniversal and surface critical behavior near a defect plane

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3 Citations (Scopus)


The existence of nonuniversal, as well as surface (universal) critical behavior near a defect plane is demonstrated on a one-dimensional quantum lattice gas model, belonging to the two-dimensional Ising universality class. According to numerical results the weak defect region is attracted by a line of fixed points starting at the bulk critical point, while the strong defect region is controlled by a separate fixed point describing the surface transition of the model. This new kind of phase diagram is argued to be general for two-dimensional lattice gas models.

Original languageEnglish
Pages (from-to)5187-5189
Number of pages3
JournalPhysical Review B
Issue number7
Publication statusPublished - jan. 1 1989


ASJC Scopus subject areas

  • Condensed Matter Physics

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