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Перегляд Відділення фізики і астрономії за назвою

Репозиторій DSpace/Manakin

Перегляд Відділення фізики і астрономії за назвою

Сортувати за: Порядок: Результатів:

  • Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices 
    Mysakovych, T.S. (Condensed Matter Physics, 2011)
    Phase transitions in systems described by Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices are investigated in this work. The case of hard-core bosons is considered and pseudospin formalism is used. ...
  • Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices 
    Mysakovych, T.S. (Condensed Matter Physics, 2011)
    Phase transitions in systems described by Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices are investigated in this work. The case of hard-core bosons is considered and pseudospin formalism is used. ...
  • Bosonic lasers: The state of the art (Review Article) 
    Kavokin, A.; Timothy C.H. Liew; Schneider, Ch.; Höfling, S. (Физика низких температур, 2016)
    Bosonic lasers represent a new generation of coherent light sources. In contrast to conventional, fermionic, lasers they do not require inversion of electronic population and do not rely on the stimulated emission of ...
  • Boundary bound states in the Bose–Hubbard-like chain 
    Zvyagin, A.A. (Физика низких температур, 2007)
    The degenerate Hubbard-like chain with open boundary conditions is studied with the help of the Bethe ansatz. The special case of the Bose–Hubbard-like chain is studied in detail. Boundary bound states, which appear as ...
  • Boundary friction on molecular lubricants: rolling mode? 
    Loktev, V.M.; Pogorelov, Yu.G. (Физика низких температур, 2004)
    A theoretical model is proposed for low-temperature friction between two smooth rigid solid surfaces separated by lubricant molecules, admitting their deformations and rotations. The appearance of different modes of ...
  • Bound electron pairs in strongly correlated models of high-temperature superconductivity 
    Boyaci, H.; Kulik, I.O. (Физика низких температур, 1998)
    The ground-state energy of two electrons on a ring is calculated for the one-dimensional Hubbard model with positive and negative on-site interaction and for the contraction model with additive and multiplicative interaction ...
  • Bound spin-excitons in two-dimensional electron gas 
    Fleurov, V.; Kikoin, K. (Физика низких температур, 2001)
    A theory of the spin exciton capture by a magnetic impurity in a 2D electron gas is developed. We consider a resonance model for the electron scattering by a transition metal impurity and calculate the binding ...
  • Bound states of electrons with soliton-like excitations in thermal systems - adiabatic approximations 
    Ebeling, W.; Velarde, M.G.; Chetverikov, A.P. (Condensed Matter Physics, 2009)
    We study the bound states of electrons with solitonic excitations in one and two-dimensional atomic systems. We include Morse interactions between the atoms in a temperature range from low to physiological temperatures. ...
  • Break-junction experiments on the Kondo semiconductor CeNiSn: tunnelling versus direct conductance 
    Naidyuk, Yu.G.; Gloos, K.; Takabatake, T. (Физика низких температур, 2000)
    The rare-earth Kondo semiconductor CeNiSn is investigated by point-contact and tunneling spectroscopy using mechanically controllable break junctions. I(V) characteristics and their derivatives are recorded for contacts ...
  • Bridge function for liquid Na 
    Baumketner, A.; Chushak, Ya. (Condensed Matter Physics, 1999)
    Bridge function B(r) for liquid Na is calculated in the referense hypernetted chain approximation from the pair distribution function obtained by means of MD simulations. A comparison with the bridge function obtained in ...
  • Bright features in the solar photosphere 
    Kostik, R.I.; Khomenko, E.V. (Кинематика и физика небесных тел, 2005)
    We report thermodynamical properties of so-called “thermal plume” observed near the solar disc centre in 2001. The spectral observations of two iron lines analysed were obtained with the use of the Vacuum Tower Telescope ...
  • Bright X-ray galaxies in SDSS filaments 
    Tugay, A.V. (Advances in Astronomy and Space Physics, 2013)
    Eighteen bright X-ray emitting galaxies were found in nearby filaments within the SDSS region. Basic X-ray spectral parameters were estimated for these galaxies using a power law model with photoelectric absorption. A close ...
  • BRISP, a new small-angle time-of-flight neutron spectrometer to study collective dynamics in disordered matter 
    Orecchini, A.; Pilgrim, W.-C.; Petrillo, C.; Suck, J.-B.; Sacchetti, F. (Condensed Matter Physics, 2008)
    An outline is given of the new neutron Brillouin Spectrometer BRISP which was installed during the last years and recently became fully operational at the Institute Laue-Langevin in Grenoble (France). The main technical features ...
  • Broadband interference filters with suppression of high reflection bands of 4-, 5- and 6-th orders 
    Pervak, V.Yu.; Poperenko, L.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2005)
    The influence of optical constants dispersion on spectral properties of multilayer interference systems, in which spectral characteristics suppression of the adjacent bands of high reflection of 4, 5 and 6-th orders are ...
  • Broken symmetry phase transition in solid HD: a manifestation of quantum orientational melting 
    Freiman, Yu.A.; Tretyak, S.M.; Jezowski, A.; Hemley, R.J. (Физика низких температур, 1998)
    Theoretical study of the broken symmetry phase (BSP) transition line in solid HD reveals that its anomalous features provide evidence for quantum orientational melting. The observations of unusual reentrant behavior is a ...
  • Brownian motion of grains and negative friction in dusty plasmas 
    Trigger, S.A.; Zagorodny, A.G. (Condensed Matter Physics, 2004)
    Within the approximation of dominant charging collisions the explicit microscopic calculations of the Fokker-Planck kinetic coefficients for highlycharged grains moving in plasma are performed. It is shown that due to ion ...
  • Brownian particle in non-equilibrium plasma 
    Lev, B.I.; Tymchyshyn, V.B.; Zagorodny, A.G. (Condensed Matter Physics, 2009)
    The stationary distribution function of Brownian particles in a nonequilibrium dusty plasma is calculated with regard to electron and ion absorption by grains. The distribution is shown to be considerably different from ...
  • Bubble nucleation in a superfluid ³He–⁴He mixture induced by acoustic wave 
    Abe, H.; Saitoh, Y.; Ueda, T.; Nomura, R.; Okuda, Y.; Burmistrov, S.N. (Физика низких температур, 2008)
    We report the nucleation dynamics of bubbles induced by an acoustic wave pulse in ³He–⁴He liquid mixtures. The experiment was performed for the mixture with ³He fixed concentrations of about 4% and 25% and the pure ...
  • Bulk Universality for Unitary Matrix Models 
    Poplavskyi, M. (Журнал математической физики, анализа, геометрии, 2009)
    A proof of universality in the bulk of spectrum of unitary matrix models, assuming that the potential is globally C² and locally C³ function (see Theorem 1.2), is given. The proof is based on the determinant formulas for ...
  • Bullets and droplets: Two-dimensional spin-wave solitons in modern magnonics 
    Sulymenko, O.R.; Prokopenko, O.V.; Tyberkevych, V.S.; Slavin, A.N.; Serga, A.A. (Физика низких температур, 2018)
    In this review we consider theoretical and experimental results related to the properties of two-dimensional spin-wave (SW) solitons, so-called SW bullets and SW droplets. Such nonlinear self-localized SW modes possess ...

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