Competition between phase separation and "classical" intermediate valence in an exactly solved model
|Title||Competition between phase separation and "classical" intermediate valence in an exactly solved model|
|Publication Type||Journal Article|
|Year of Publication||2000|
|Authors||Chung, W. K., and Freericks J. K.|
|Journal||Physical Review Letters|
The exact solution of the spin-1/2 Falicov-Kimball model on an infinite-coordination Bethe lattice is analyzed in the regime of "classical" intermediate valence. We find that (i) either phase separation or a direct metal-insulator transition precludes intermediate valence over a large portion of the phase diagram, and (ii) within the intermediate valence phase, only continuous transitions are found as functions of the localized f-electron energy or temperature.