Mott transition in the Hubbard model on checkerboard lattice

Takuya Yoshioka, Akihisa Koga, Norio Kawakami

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We investigate the bandwidth-controlled Mott transition in the Hubbard model on the checkerboard lattice at half filling using the path-integral renormalization group (PIRG) method. It is demonstrated that the system undergoes a first-order phase transition to the plaquette-singlet insulating phase at a finite Hubbard interaction. This conclusion is drawn via a detailed analysis of the spin and charge correlations around the phase transition point by means of the PIRG method aided with a new iteration scheme introduced in this paper.

Original languageEnglish
Article number104702
Journaljournal of the physical society of japan
Issue number10
Publication statusPublished - 2008 Oct
Externally publishedYes


  • Checkerboard lattice
  • Geometrical frustration
  • Hubbard model
  • Mott transition
  • Path integral renormalization group method (PIRG)

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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