Перегляд за назвою

Сортувати за: Порядок: Результатів:

  • Exciting high frequency oscillations in a coaxial transmission line with a magnetized ferrite: 2D approach 
    Ahn, J.W.; Karelin, S.Yu; Krasovitsky, V.B.; Kwon, H.O.; Magda, I.I.; Mukhin, V.S.; Sinitsin, V.G. (Вопросы атомной науки и техники, 2015)
    1D and 2D simulation methods and research into the formation of high frequency oscillations in a coaxial nonlinear transmission line (NLTL) partially filled with a longitudinally magnetized ferrite are presented. Dynamics ...
  • Exciton absorption spectra of KPb₂Br₅ thin films 
    Kovalenko, V.V.; Kovalenko, E.N.; Yunakova, O.N.; Yunakov, N.N. (Functional Materials, 2016)
    Absorption spectra of KPb2Br5 thin films of tetragonal (I) and monoclinic (II) structures were investigated in the spectral region of 2-6 eV and the temperature range of 90-440 K. It was found that KPb₂Br₅(I) of the ...
  • Exciton absorption spectrum of Cs₄PbCl₆ thin films 
    Yunakova, O.N.; Miloslavsky, V.K.; Kovalenko, E.N.; Kovalenko, V.V. (Functional Materials, 2015)
    Absorption spectrum of Cs₄PbCl₆ thin films was studied in the spectral range of 2-6 eV within the temperature interval 90-500 K. Localization of low-frequency excitonic states in sublattice of the compound containing Pb²⁺ ...
  • Exciton absorption spectrum of thin (KI)₁₋x(PbI₂)x films 
    Yunakova, O.N.; Miloslavskii, V.K.; Kovalenko, E.N. (Functional Materials, 2013)
    The absorption spectra of thin films of (KI)₁₋x(PbI₂)x 0.1≤ x≤ 0.5 were investigated in the spectral interval 2–6 eV. The formation of two compounds KPbI₃ and K₄PbI₆ in system KI–PbI₂ was determined on the basis of the ...
  • Exciton condensation in quantum wells 
    Sugakov, V.I. (Физика низких температур, 2006)
    The theory of exciton condensation is given in two-dimensional systems under suggestion that condensation occurs in really space and condensed phase arises as a result of an attractive interaction between excitons. Due ...
  • Exciton condensation in quantum wells. Exciton hydrodynamics. The effect of localized states 
    Sugakov, V.I. (Condensed Matter Physics, 2014)
    The hydrodynamic equations for indirect excitons in the double quantum wells are studied taking into account 1) a possibility of an exciton condensed phase formation, 2) the presence of pumping, 3) finite value of the ...
  • Exciton density pattern formation in laser irradiated quantum wells under electrodes of various shapes 
    Tomylko, V.V.; Goliney, I.Yu.; Chernyuk, A.A.; Sugakov, V.I. (Физика низких температур, 2014)
    The condensation of indirect excitons in double quantum wells is studied in an electric field created by electrodes of different shapes. The finite value of the exciton lifetime, the pumping and nonuniformity of the electric ...
  • Exciton effects in band-edge electroluminescence of silicon barrier structures 
    Sachenko, A.V.; Gorban, A.P.; Korbutyak, D.V.; Kostylyov, V.P.; Kryuchenko, Yu.V.; Chernenko, V.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2004)
    A theoretical analysis of the band-edge electroluminescence efficiency in silicon diodes and p-i-n-structures has been made. We have shown that maximal possible efficiency can achieve 10 % both at room and liquid nitrogen ...
  • Exciton-enhanced recombination in silicon at high concentrations of charge carriers 
    Sachenko, A.V.; Gorban, A.P.; Kostylyov, V.P. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2000)
    The interrelation between processes of electron-hole recombination and annihilation of excitons in silicon is examined. It is shown, that recombination processes can be essentially influenced by the exciton annihilation ...
  • Excitonic effects in band-edge luminescence of semiconductors at room temperatures 
    Sachenko, A.V.; Kryuchenko, Yu.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2000)
    A theoretical analysis is developed for ascertaining the influence of exciton states on edge luminescence in different semiconductors at high temperatures and high levels of excitation. Screening effects and the Mott ...
  • Excitonic Instability and Gap Generation in Monolayer Graphene 
    Gamayun, O.V.; Gorbar, E.V.; Gusyn, V.P. (2010)
    We analyze the excitonic instability in graphene by solving the Bethe–Salpeter equation for the electron-hole bound state. In the supercritical regime, we show that this equation has a tachyon in its spectrum. We argue ...
  • Excitonic photoconductivity of heterostructures based on gallium and indium selenides 
    Katerynchuk, V.M.; Kovalyuk, Z.D.; Tkachuk, I.G. (Functional Materials, 2017)
    Present spectra of photosensitivity of various types of heterojunctions based on layered crystals A³B⁶ made of the Van der Waals connection of pairs on heteromer as well as covalent. We also discuss the features of excitonic ...
  • Exciton in closed and opened quantum dot 
    Tkach, M.V.; Seti, Ju.O. (Condensed Matter Physics, 2007)
    The theory of exciton spectrum in spherically symmetric states for the three- shell closed spherical quantum dot is proposed. The evolution of the exciton spectrum while varying the outer well thickness from zero (stationary ...
  • Exciton-induced lattice defect formation 
    Savchenko, E.V.; Ogurtsov, A.N.; Zimmerer, G. (Физика низких температур, 2003)
    The lattice defect formation in solid Ne induced by electronic excitation was studied using the selective vacuum ultraviolet spectroscopy method. The samples were excited with synchrotron radiation in the range of excitonic ...
  • Exciton migration in pseudoisocyanine J-aggregates formed in polymer films 
    Sorokin, A.V.; Gnap, B.A.; Fylymonova, I.I.; Yefimova, S.L. (Functional Materials, 2012)
    Exciton transport efficiency in pseudoisocyanine (PIC) J-aggregates formed in PVA thin film has been studied using an exciton trap. As a trap, anionic cyanine dye DiD-C3S has been used. Luminescence spectra have been ...
  • Exciton–polariton laser 
    Moskalenko, S.A.; Tiginyanu, I.M. (Физика низких температур, 2016)
    We present a review of the investigations realized in the last decades of the phenomenon of the Bose–Einstein condensation (BEC) in the system of two-dimensional cavity polaritons in semiconductor nanostructures. The ...
  • Exciton relaxation in KBr and CaF₂ at low temperature: molecular dynamics study 
    Song, K.S. (Физика низких температур, 2003)
    We report here recent study of molecular dynamics simulation of exciton relaxation in several ionic crystals at low temperature. Both the lowest energy spin triplet and some of the low lying hole excited states are allowed ...
  • Excitons and trions in spherical semiconductor quantum dots 
    Kupchak, I.M.; Kryuchenko, Yu.V.; Korbutyak, D.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2006)
    An original iterative procedure has been developed to obtain energy spectrum of neutral and charged excitons (positive and negative trions) in spherical semiconductor quantum dots (QD) imbedded into a dielectric material. ...
  • Exciton self-trapping into diatomic and triatomic molecular complexes in xenon cryocrystals 
    Ogurtsov, A.N.; Savchenko, E.V.; Sombrowski, E.; Vielhauer, S.; Zimmerer, G. (Физика низких температур, 2003)
    The recent study of molecular trapped centers in Xe cryocrystals was extended on triatomic self-trapped excitons. Time- and spectrally-resolved molecular luminescence was measured in the temperature range 5–60 K. The ...
  • Excitons in Nanosystems Consisting of Semiconductor Quantum Dots 
    Pokutnyi, S.I.; Gorbyk, P.P.; Makhno, S.M.; Prokopenko, S.L.; Mazurenko, R.V. (Наносистеми, наноматеріали, нанотехнології, 2017)
    As found, within the band gap of the quantum dot of zinc selenide, a zone of exciton states located at the bottom of the conduction band appears. As shown, a decrease in the band gap width for this nanosystem is conditioned ...