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Перегляд Физика низких температур, 2007, том 33 за назвою

Репозиторій DSpace/Manakin

Перегляд Физика низких температур, 2007, том 33 за назвою

Сортувати за: Порядок: Результатів:

  • A Monte Carlo study of the Falicov–Kimball model in the perturbative regime 
    Musiał, G.; Dębski, L.; Wojtkiewicz, J. (Физика низких температур, 2007)
    Finite-temperature properties of the Falicov–Kimball model on the square lattice have been studied in the perturbative regime, i.e. for t/U << 1, where t is the hopping constant and U denotes the Coulomb interaction strength. ...
  • Andreev reflection study of a new magnetic superconductor Mo3Sb7 in magnetic field 
    Dmitriev, V.M.; Rybaltchenko, L.F.; Ishchenko, L.A.; Khristenko, E.V.; Bukowski, Z.; Troć, R. (2007)
    Andreev reflection in contacts based on a magnetic superconductorMo3Sb7in magnetic field has been investigated by the point-contact method. It is found that the behavior of the order parameter in the magnetic field Δ(H) ...
  • Andreev reflection study of the new magnetic superconductor M₃Sb₇: evidence for the gap anisotropy 
    Dmitriev, V.M.; Rybaltchenko, l.F.; Khristenko, E.V.; Ishchenko, l.A.; Bukowski, Z.; Troć, R. (Физика низких температур, 2007)
    We report the point-contact (PC) Andreev-reflection experiments on the new paramagnetic superconductor Mo₃Sb₇ for which we have observed strong distinctions in the PC spectra measured for different contact axis orientations. ...
  • Bifurcation picture and stability of the gap and out-gap discrete solitons 
    Kroon, L.; Bogdan, M.M.; Kovalev, A.S.; Malyuta, E.Yu. (Физика низких температур, 2007)
    The dynamics of a quaternary fragment of a discrete system of coupled nonlinear oscillators with modulated frequency parameters is investigated and the stability of its gap and out-gap soliton-like excitations is studied.
  • 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 ...
  • Charged snowball in nonpolar liquid 
    Chikina, I.; Shikin, V.; Varlamov, A. (Физика низких температур, 2007)
    The problem of correct definition of the charge carrier effective mass in superfluid helium is revised. It is demonstrated that the effective mass M of a such quasiparticle can be introduced without use of the Atkins’s idea ...
  • Charge states of strongly correlated 3d oxides: from typical insulator to unconventional electron-hole Bose liquid 
    Moskvin, A.S. (Физика низких температур, 2007)
    We present a model approach to describe charge fluctuations and different charge phases in strongly correlated 3d oxides. As a generic model system one considers that of centers each with three possible valence states ...
  • Cluster relaxation dynamics in liquids and solids near the glass-transformation temperature 
    Kokshenev, V.B. (Физика низких температур, 2007)
    The structural relaxation in glass forming materials is studied near the glass transformation temperature Tg indicated by the heat capacity maximum. The late-time asymptote of the Kohlrausch–Williams–Watts form of the ...
  • Coherent current states in a two-band superconductor 
    Yerin, Y.S.; Omelyanchouk, A.N. (Физика низких температур, 2007)
    Homogeneous current states in thin films and Josephson current in superconducting microbridges are studied within the frame of a two-band Ginzburg–Landau theory. By solving the coupled system of equations for two order ...
  • Collective excitations in dynamics of liquids: a «toy» dynamical model for binary mixtures 
    Bryk, T.; Mryglod, I.M. (Физика низких температур, 2007)
    We propose a new «toy» dynamical model that permits us to derive analytical expressions for dispersion of two branches of «bare» propagating collective excitations in binary disordered systems in the whole range of ...
  • Creation of high-energy phonons by four-phonon processes in anisotropic phonon systems of He II 
    Adamenko, I.N.; Kitsenko, Yu.A.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2007)
    The problem of the creation of high-energy phonons (h-phonons) by a pulse of low-energy phonons (l-phonons) moving from a heater to a detector in superfluid helium, is solved. The rate of h-phonon creation is obtained ...
  • Dynamic behavior of superconducting flux qubit excited by a series of electromagnetic pulses 
    Kiyko, A.S.; Omelyanchouk, A.N.; Shevchenko, S.N. (2007)
    We study theoretically the behavior of the superconducting flux qubit subjected to the series of the electromagnetic pulses. The possibility of controlling the system state via changing the parameters of the pulse is ...
  • Effective conformational search methods for biological macromolecules 
    Çelik, T. (Физика низких температур, 2007)
    The configuration space of many complex physical systems presents a rough energy landscape consisting of tremendous number of local minima separated by high energy barriers. One way to overcome these barriers is to perform ...
  • Electronically induced modification of thin layers on surfaces 
    Bauer, U.; Neppl, S.; Menze, D.; Feulner, P.; Shaporenko, A.; Zharnikov, M. (Физика низких температур, 2007)
    Interactions of thermally and electronically stimulated reactions in thin layers on surfaces are investigated. For self-assembled monolayers, thermal activation promotes many processes primarily induced by electronic ...
  • Energy of a single electron in gaseous media 
    Shikin, V.B.; Nazin, S.S. (Физика низких температур, 2007)
    The so-called «optical» approximation in the theory of electron energy spectrum in the presence of scattering centers with positive scattering length randomly distributed with the average density ng is considered for a ...
  • Entanglement in fermionic systems at a quantum phase transition 
    Johannesson, H.; Larsson, D. (2007)
    We consider recent results on the use of the single-site entanglement measure for identifying and characterizing a quantum phase transition in systems of interacting fermions. We discuss the extension of these results to ...
  • Evolution of discrete local levels into an impurity band in solidified inert gas solution 
    Kosevich, A.M.; Feodosyev, S.B.; Gospodarev, I.A.; Grishaev, V.I.; Kotlyar, O.V.; Kruglov, V.O.; Manzhelii, E.V.; Syrkin, E.S. (Физика низких температур, 2007)
    The density of states g(w) of disordered solutions of solidified inert gases have been calculated using the Jacobian matrix method. The transformation of a discrete vibrational level into an impurity zone at a growing ...
  • Exchange broadening of EPR line in ZnO:Co 
    Sati, P.; Pashchenko, V.; Stepanov, A. (2007)
    We study the X-band EPR spectra of Co²⁺ in single crystalline Zn₁₋xCoxO (x = 0.001–0.075) thin films grown by plasma-assisted molecular beam epitaxy. By analyzing the EPR linewidth behavior we argue that the exchange-narrowing ...
  • Fine structure of critical opalescence spectra 
    Sushko, M.Ya. (Физика низких температур, 2007)
    The effect of the 1.5-scattering mechanism on the time and temperature behavior of the electric field autocorrelation function for the light wave scattered from fluids has been studied for the case where the order- parameter ...
  • From optical spectra to phase diagrams — the binary mixture N2–CO 
    Vetter, M.; Brodyanski, A.; Jodl, H.-J. (2007)
    We investigated the T–c% phase diagram of the binary system N2–CO. From changes in IR spectra of all kinds of mode excitations (phonons, vibrons) we were able to determine the temperature of phase transitions (solid–solid, ...

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