Journal of Physical Studies 5(1), 31–38 (2001) DOI: https://doi.org/10.30970/jps.05.31 GROUND STATE ENERGY AND METAL-INSULATOR TRANSITION IN A MODEL OF NARROW-BAND PARAMAGNET L. Didukh, Yu. Skorenkyy Ternopil State Technical University, Department of Physics, 56 Rus'ka Str., Ternopil, UA–46001, Ukraine

The ground state energy and metal-insulator transition in a model of a narrow-band paramagnet with non-equivalent Hubbard subbands at half-filling and zero temperature are investigated. The single-particle energy spectrum, the criterion of metal-insulator transition, as well as the dependence of current carrier concentration and energy of the system on model parameters are obtained.

PACS number(s): 71.10.Fd, 71.30.+h, 71.27.+a

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