Search academic texts

Information × Registration Number 0211U013098, 0111U005427 , R & D reports Title The Theory of Radiation and Non Linear Distribution of Electro-magnetic Waves in Nano Resonance Tunnel Structures and Thin Semiconductor Films popup.stage_title Head Mykola Tkach, Registration Date 23-12-2011 Organization Yuri Fedkovych Chernivtsi National University popup.description2 In research work by the method of function of distributing of probability, method of coefficient of transparency and method S-matrix spectral characteristic of the quazistatsionary states of quaziparticles are investigated in one-sided opened nanoheterostructure. The exact solutions of Shrodinger equations are got: energies and wave functions of the stationary states of electron in a symmetric resonance-tunnel structure with rectangular potential. The process of evolution of spectral parameters is explored in transition from dvoh-yamnoi closed to the odno-yamnoi one-sided opened nanosisteme. The built theory of spectrum of limited and interface fononiv in the bagatosharovih flat nanosistemah, the spectrum of limited and interface fononiv is calculated in dependence on the sizes of the nanosistem. The built theory of power spectrum of shallow impurity in spherical nanostructures. Dependence of energy of basic is explored and the excited states of electron from position of impurity. For the case of the centrally placed impurity the exact solutions of Shrodinger equations are got. By the variation method and method of perturbation theory the dependence of the energy of the basic state of electron on position of impurity in a spherical nanostructure are obtained.The theory of dynamic conductivity of the nanosystem in the model of rectangular potentials of the opened resonance-tunnel structure which is found in the permanent homogeneous electric field is developed. It is shown, that at the set geometrical design of nanosystem there is the such value of the permanent electric field, at which exist maximum both size of power of electromagnetic radiation and closeness of current which passes through the separate cascade of quantum cascade laser. Product Description popup.authors Войцехівська Оксана Миколаївна Головацький Володимир Анатолійович Маханець Олександр Михайлович Ткач Микола Васильович popup.nrat_date 2020-04-02 Close