Hasan R. Galvanomagnetic phenomena in organic layered conductors

The object of study: organic layered conductors with a metal type of conductivity and quasi-two dimensional electron energy spectrum of an arbitrary form. Aim: a theoretical description and interpretation of the galvanomagnetic phenomena in organic layered conductors with quasi-two dimensional electron energy spectrum of an arbitrary form.The methods of the investigations: solving the Boltzmann kinetic equation, Green function methods and solving the quantum kinetic equation for the statistical operator.Results, novelty: in organic layered conductors with quasi-two dimensional electron energy spectrum of an arbitrary form, a theoretical description and interpretation of the experimentally obtained dependences of magnetoresistance, Hall voltage and Shubnikov- de Haas oscillations on the amount and orientation of quantizing magnetic field were considered. It was shown, that not only the position of the maximums in angular dependence of magnetoresistance, but also their height contain detail information about the dispersion law of the charge carriers. Comparison of the outcomes with experimental research data for a series of typical organic complexes of charge transfer was fulfilled. It was shown, that the Shubnikov- de Haas oscillations amplitudes is rather sensitive to the orientation of the magnetic field to the layers. In the case, when more than one harmonic of the energy of conduction electrons appreciable contribute to the modulation of Fermi surface, positions of peaks of quantum oscillation amplitude to be shift from the corresponding semiclassical ones. In conductors with Fermi surface consisting of topologically different elements – weakly warped cylinder and weakly warped sheets, a sharp anisotropy and quantum oscillations of Hall voltage are considerable. Field of implementation: solid sate physics, physics of low-dimensional systems.