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Charge-transfer metal-insulator transitions in the spin-one-half Falicov-Kimball model

Woonki Chung·J. K. Freericks
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Abstract

The spin-one-half Falicov-Kimball model is solved exactly on an infinite-coordination-number Bethe lattice in the thermodynamic limit. This model is a paradigm for a charge-transfer metal-insulator transition where the occupancy of localized and delocalized electronic orbitals rapidly changes at the metal-insulator transition (rather than the character of the electronic states changing from insulating to metallic as in a Mott-Hubbard transition). The exact solution displays both continuous and discontinuous (first-order) transitions.

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Woonki Chung, J. K. Freericks. 1998-02-11. Charge-transfer metal-insulator transitions in the spin-one-half Falicov-Kimball model. https://doi.org/10.1103/physrevb.57.11955

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