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Перегляд Физика низких температур за темою "Низкоразмерные и неупорядоченные системы"

Репозиторій DSpace/Manakin

Перегляд Физика низких температур за темою "Низкоразмерные и неупорядоченные системы"

Сортувати за: Порядок: Результатів:

  • 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 ...
  • Characterization of ZnSe nanocrystals grown by vapor phase epitaxy 
    Tishchenko, V.V.; Kovalenko, A.V. (Физика низких температур, 2006)
    This paper reports the application of scanning electron microscopy, x-ray diffraction, and photoluminescence techniques for characterization of ZnSe nanocrystals grown on GaAs (100) substrate from the vapor phase. The ...
  • Classical mesoscopic effect in the resistance of point contacts 
    Kolesnichenko, Yu.A.; Omelyanchouk, A.N.; Yanson, A.I.; N. van der Post (Физика низких температур, 1997)
    The mesoscopic effect of the dependence of the point-contact conductance on the spatial distribution of the impurities is theoretically studied. It is shown that the resistance dependence on the diameter d is not only ...
  • Commensurate-incommensurate phase transitions for multichain quantum spin models: exact results 
    Zvyagin, A.A. (Физика низких температур, 2000)
    The behavior in an external magnetic field is studied exactly for a wide class of multichain quantum spin models. It is shown that the magnetic field together with the interchain couplings cause commensurate-incommensurate ...
  • Dynamics of bound soliton states in regularized dispersive equations 
    Bogdan, M.M.; Charkina, O.V. (Физика низких температур, 2008)
    The nonstationary dynamics of topological solitons (dislocations, domain walls, fluxons) and their bound states in one-dimensional systems with high dispersion are investigated. Dynamical features of a moving kink emitting ...
  • Dynamics of formation of soliton conductivity in a 2D-array of linear chains containing commensurate charge density wave near the contact with a normal metal 
    Pershin, Y.V.; Rozhavsky, A.S. (Физика низких температур, 1999)
    We make a numerical study of the conversion of conduction electrons into charge density wave (CDW) topological solitons at the interface between a normal metal and a 2D-array of the CDW-carrying linear chains. The interplay ...
  • Effect of doping on the magnetic ordering of quasi-one-dimensional antiferromagnets 
    Zvyagin, A.A. (Физика низких температур, 2006)
    We have studied theoretically how nonmagnetic dopants, which change the local coupling of spins to the host, affect the low-temperature thermodynamic characteristics of quasi-one-dimensional (Q1D) quantum spin antiferromagnets. ...
  • Effect of temperature on the coherence time of a parabolic quantum dot qubit 
    Wei Xiao; Hong-Wei Wang (Физика низких температур, 2015)
    The effects of the temperature on the coherence time of a parabolic quantum dot (PQD) qubit are investigated by using the variational method of Pekar type. We obtain the ground and the first excited states’ eigenenergies ...
  • Electromagnetic waves in layered conductors and superlattices in a magnetic field 
    Gvozdikov, V.M.; Vega-Monroy, R. (Физика низких температур, 1999)
    The collective electromagnetic wave excitations in layered conductors in an external quantizing magnetic field are studied theoretically. A set of coupled equations for the electric field components and the Greens functions ...
  • Energy pumping in a quantum nanoelectromechanical system 
    Nord, T.; Gorelik, L.Y. (Физика низких температур, 2005)
    Fully quantized mechanical motion of a single-level quantum coupled to two voltage biased electronic leads is studied. It is found that there are two different regimes depending on the applied voltage. If the bias voltage ...
  • Features of low-temperature exciton dynamics in J-aggregates with topological disorder 
    Malyukin, Yu.V.; Katrich, G.S.; Efimova, S.L.; Sorokin, A.V. (Физика низких температур, 2003)
    It is shown on the basis of an analysis of the J-band shape, luminescence spectra, and luminescence decay that self-trapping of excitons takes place in J-aggregates with strong topological disorder. A self-trapping barrier ...
  • Giant resistance switching effect in nano-scale twinned La₀.₆₅Ca₀.₃₅MnO₃ film 
    Prokhorov, V.G.; Kaminsky, G.G.; Komashko, V.A.; Lee, Y.P.; Tovstolytkin, A.I.; Pogorily, A.N. (Физика низких температур, 2002)
    The magnetic and transport properties of a 20 nm-scale twinned La₀.₆₅Ca₀.₃₅ MnO₃ film are investigated in a temperature range of 77-300 K. The coexistence of ferromagnetic metallic and charge-ordered insulating phases is ...
  • Helicons and magnetoimpurity waves in layered conductors 
    Gvozdikov, V.M.; Ermolaev, A.M.; Vega-Monroy, R. (Физика низких температур, 1999)
    It is shown that local electron states, caused by impurities in a layered conductor placed in an external magnetic field, give rise to resonant corrections Δσαβ(ω) to the high-frequency conductivity tensor Δσαβ(ω) of the ...
  • Hyperfine-driven persistent currents in mesoscopic rings based on a 2D electron gas with Rashba spin-orbit interaction 
    Cherkaskiy, V.A.; Shevchenko, S.N.; Rozhavsky, A.S.; Vagner, I.D. (Физика низких температур, 1999)
    We present a detailed theory of induced persistent current (PC) produced by hyperfine interaction in mesoscopic rings based on a 2 D electron (hole) gas in the absence of external magnetic field. PC emerges due to combined ...
  • Hyperfine-interaction-driven Aharonov-Bohm effect in mesoscopic rings 
    Vagner, I.D.; Wyder, P.; Rozhavsky, A.S. (Физика низких температур, 1997)
    It is shown qualitatively that lifting of the electron spin degeneracy by a hyperfine field, which is generated by a nonequilibrium nuclear spin distribution, and breaking of the left-right symmetry by the spin-orbit ...
  • Influence of electron-electron scattering on spin-polarized current states in magnetic wrapped nanowires 
    Gurzhi, R.N.; Kalinenko, A.N.; Kopeliovich, A.I.; Yanovsky, A.V.; Bogachek, E.N.; Landman, Uzi (Физика низких температур, 2003)
    We study the role of electron-electron collisions in the formation of spin-polarized current states in a "spin guide" which is a system consisting of a non-magnetic conducting channel wrapped in the grounded nanoscale ...
  • Influence of freezing down to 77.15 K on structure and antioxidant power of some proteins 
    Rozanova, S.L.; Narozhnyi, S.V.; Nardid, O.A. (Физика низких температур, 2017)
    The purpose of the present work was to investigate influence of different freeze-thawing protocols on structure and antioxidant properties of isolated proteins. In our experiments we have studied human serum albumin, human ...
  • Interaction of discrete breathers with thermal fluctuations 
    Eleftheriou, M.; Flach, S. (Физика низких температур, 2008)
    Discrete breathers (DB) are time-periodic and spatially localized lattice excitations, which can be linearly stable or unstable with respect to either localized or extended perturbations. We analyze the interaction of ...
  • Intrasubband plasmons in a weakly disordered array of quantum wires 
    Bludov, Y.V. (Физика низких температур, 2003)
    A theoretical investigation is carried out for plasmons in a weakly disordered array of quantum wires, consisting of a finite number of quantum wires arranged at an equal distance from each other. The array of quantum wires ...

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