NEW PHASES AND STRUCTURAL PHASE-TRANSITIONS IN THE 1-D FALICOV-KIMBALL MODEL AT T=0

The Falicov-Kimball model of spinless itinerant fermions and localized classical ions, on a one-dimensional lattice and at zero temperature, has been studied by means of restricted phase diagrams in the grand-c anonical ensemble. Compared with earlier investigations a more efficie nt numerical procedure has been applied and consequently more precise phase diagrams have been obtained. For small and large values of the u nique coupling parameter our study has confirmed the results obtained in other works; however for intermediate values we have found new kind s of periodic phases and structural phase transitions.