Mott transition in the Hubbard model on the triangular lattice

Takuya Yoshioka, Akihisa Koga, Norio Kawakami

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We investigate a metal-insulator Mott transition in the halffilled Hubbard model on the triangular lattice. In this study, we make use of the path-integral renormalization group method with an iteration and truncation scheme proposed recently, which allows us to access the competing ground states around the transition point. Wefind for a cluster with 36 sites that as the Hubbard interaction U increases, the paramagnetic metallic (PM) state undergoes a metal-insulator phase transition to a nonmagnetic insulating (NMI) state at Uc 7:4t, where t is the transfer integral. A detailed analysis around the transition point shows that the Mott transition is of first order.

Original languageEnglish
Pages (from-to)635-637
Number of pages3
JournalPhysica Status Solidi (B) Basic Research
Volume247
Issue number3
DOIs
Publication statusPublished - 2010 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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