Prokopov O. Features of electric transport properties of graphite intercalated compounds with iodine chloride and bromide

The thesis deals with the study of the electron transport properties of graphite intercalated compounds (GIC) based on fine crystalline anisotropic graphite (FAG) with polar and nonpolar intercalation molecules and the influence of phase transformations in intercalation layers on the transport properties of such GIC. The behavior of the electrical properties of such acceptor GICs is considered within the framework of a two-dimensional model of the electronic structure. The parameters of the structure of such GICs, the value of the accommodation coefficient, Fermi energy are estimated. Also, in the framework of the theory of weak localization and interaction of charge carriers, the behavior of electrical properties in the region of low temperatures is analyzed. The influence of interaction between layers on the resistivity value of such GIC is investigated. The established anomalies of the transport properties of the GIC have shown that for structural polar intercalation (aluminum chloride), the structural phase transitions do not lead to a change in the charge particle, which layers of intercalating are transferred to layers of graphite, and, consequently, do not change the state densities at the Fermi level N(E F ). For these GIC, the resistance changes are related only to the change in the effective time of the charge carrier relaxation.