Research Paper : Crystals Specific Heat beyond Phonons-Conception

Gerasimov, Alex ; Chkhartishvili, Levan ; Buachidze, David;

On the basis of the general idea about dominant roles of electron
configurations of constituting atoms and inter-atomic chemical bonds in the formation of thermal properties of crystals, there is suggested a new theory of the specific heat, in which the heat absorption by the crystalline lattice is associated not with the excitation of phonon waves, but the oscillations of atoms localized in the potential wells of finite depth, whose energies are continuously changing within bands of finite width. In this way, a general expression of the crystals specific heat is obtained. It is utilized to interpret the experimental temperaturedependence
of the beta-rhombohedral boron specific heat.