Mott transition in the Hubbard model on the triangular lattice

Takuya Yoshioka, Akihisa Koga, Norio Kawakami

研究成果: Article査読

2 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)635-637
ページ数3
ジャーナルPhysica Status Solidi (B) Basic Research
247
3
DOI
出版ステータスPublished - 2010 3月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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