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 language | English |
---|---|
Pages (from-to) | 635-637 |
Number of pages | 3 |
Journal | Physica Status Solidi (B) Basic Research |
Volume | 247 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2010 Mar |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics