Thermodynamic and electronic properties of a hard-sphere fluid interacting self consistently with its tight-binding electrons

We have carried out self-consistent Monte-Carlo simulations for a monovalent-atom fluid model, with both hard-sphere repulsions and an attraction arising from the free energy of its valence electrons. This energy is derived from a tight-binding model with electronic hopping, decaying exponentially with distance. Our previous work is generalized by removing the restrictions of a lattice gas with electron hopping only to nearest-neighbor sites. The electronic properties of the model fluid have been studied by others, but the phase diagram and the self-consistent effects of the fluid structures on the electronic properties are obtained in the present work.