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Information × Registration Number 0209U010676, 0107U007726 , R & D reports Title Interplay of electronic, magnetic and elastic properties in strongly nonhomogeneous nanostructures popup.stage_title Head Leonid Andreevich Pastur, Registration Date 18-12-2009 Organization B.Verkin Institute for Low Temperature Physics and Engineering of National Academy of Science of Ukraine popup.description2 Goal of the project: theoretical studying and numerical calculation of nanosystems with inhomogeneous mechanical, electrical and magnetic properties. Scientific significance of the project: The studies of transport properties of nanosystems with inhomogeneous mechanical, electrical and magnetic characteristics (in particular, changes which various defects bring into kinetics of elementary excitations) comprise the considerable part of theoretical nanophysics. New types of transport effects in nanostrucures, in particular, heterogeneous compounds, allow for the control of the defects structure (where not only charge but also spin can be controlled) while fabricating new composite materials and implementing nanosystems practically. Among them magnetic nanodots and superlattices are the promising ones to be applied in the magnetic sensors, new spintronic devices, superdense information systems, elements of digital logic, new biomedical technologies. In the frameworks of the project a new spin-electrical effect in the ring-like nanostructures is predicted that leads to the new type of oscillations with periodic change of concentration of electron spins at the constant electron density. In these oscillations the current generates electron spin polarization influenced by magnetic backward force in the places of magnetic inhomogeneity. In the quantum regime these ring-like oscillators might be used as qubits (the elements of quantum computer). The dynamics of magnetic single-layer nanodots and the structure of various vortex states are numerically calculated. Magnetic nanodots might be applied in spintronics and artificial "magnon" crystals consisting of nanodots to store information.The complete classification of vortices of different polarization and chirality with magneto-dipole interaction being taken into account is proposed and a corresponding phase diagram of possible vortex states is presented. The model describing the quantum dynamic and relaxation of two-level system interacting with not very "large" subsystem is proposed. The results found can be used for qualitative description of various systems in nanophysics and quantum informatics. Singularities of phonon characteristics of atomic amplitudes of carbon nanolayers and massive graphite are predicted. The singularities are analogous to the "Dirac -types" ones in the electronic spectrum of grapheme films. The exact description of the processes of propagation and interaction of nonlinear strongly localized impulses - discrete breathers in nanorealization of the transmission lines is given. This can be used for the high density information store.The resonance tunneling of electrons through single-wall carbon nanotubes filled with fullerene molecules (carbon nanopeapod based molecular transistor) is studied. Product Description popup.authors Є.С.Сиркін І.В.Кріве Богдан М.М. Гуржи Р.Н. Ковальов О.С. Копеліович О.І. Пастур Л.А. Феодосьев С.Б. popup.nrat_date 2020-04-02 Close