Universality class of the Mott transition in two dimensions

S. Moukouri, E. Eidelstein

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


We use the two-step density-matrix renormalization group method to elucidate the long-standing issue of the universality class of the Mott transition in the Hubbard model in two dimensions. We studied a spatially anisotropic two-dimensional Hubbard model with a nonperfectly nested Fermi surface at half-filling. We find that unlike the pure one-dimensional case where there is no metallic phase, the quasi-one-dimensional model displays a genuine metal-insulator transition at a finite value of the interaction. The critical exponent of the correlation length is found to be ν 1.0. This implies that the fermionic Mott transition belongs to the universality class of the 2D Ising model.

Original languageEnglish
Article number155112
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number15
StatePublished - 8 Oct 2012
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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