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Information × Registration Number 0201U003659, 0100U003279 , R & D reports Title Waves and quantum oscillation phenomena in low-dimensional, layered and spin systems in normal metals and superconducting superlattices in a magnetic field popup.stage_title Head Yermolaev O.M., Registration Date 03-04-2001 Organization Kharkov National University named after V.N.Karazin popup.description2 The subject of studies — superconducting, normal and spin low-dimensional systems in magnetic field. The purpose of the work is to develop a theory of magnetoplasma waves in two-dimensional electron gas with impurity electronic states in a magnetic field, theory of the Haas-van-Alphen effect in uniform superconductors, selfconsistent microtheory for superconducting superlattices in magnetic fields, studies of the physical properties of the paramagnets, developing theory of sound- and spin-waves in conductors with the magnetoimpurity states, development of the new methods in the theory of the spin systems. The method of studies: quantum Green's functions, new methods in the theory of the spin-systems. New methods for theoretical studies of the quantum spin--systems are proposed: a special perturbative approach developed for calculations of the tunnel splitting in the spin-systems like that in anisotropic paramagnets in magnetic field. The peculiarities of the quantum oscillations in a magnetic field in layered crystals and superlattices in an external magnetic field (the de Haas-van Alphen effect) below the upper critical field, i.e. in the vertex Abrikosov state are studied. A theory of local phono-plasmon, magnetoimpurity, spiral and quantum waves in layered conductors and superconductors is developed. The result of studies are in use by different scientific institutions in Ukraine and CIS, as well as in education courses. Product Description popup.authors popup.nrat_date 2020-04-02 Close