Thermodynamics of a Pseudospin-Electron Model

The purpose of this article is to present the thermodynamics of the pseudospin-electron model in the case of the different type interactions between pseudospins. First, we provide an overview of the results of works which deal with the theoretical investigation of the pseudospin-electron model with the inclusion of the direct pseudospin-pseudospin interaction (but without the electron transfer). Second, we present the results of the investigation of the model in the case of the absence of the direct pseudospin-pseudospin interaction and Hubbard correlation, when interaction between pseudospins via conducting electron is done.