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Metal-Insulator Transition Due to Electron Correlation
Progress of theoretical physics
717 Metal insulator transition is investigated on the Hubbard model of which the interatomic hopping energy is dependent on the volume of the system. The electron correlation is treated with the use of the method developed by the author before. It is shown that a first order transition with a critical point exist for an appropriate values of parameters although the result is quantitatively unsatisfactory.doi:10.1143/ptp.56.717 fatcat:ec5tgvw7jbetbdvfd3pjar4pxy