The Hubbard model on a square lattice has been studied by the quantum Monte Carlo method. The nature of the Mott transition upon hole doping is investigated. Critical exponents of the metal-insulator transition estimated for charge and spin correlations are summarized. We stress that a new theoretical framework should be constructed to understand these results. Comparisons with experimental results on high-Tc oxides are also made.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering