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Перегляд Физика низких температур за назвою

Репозиторій DSpace/Manakin

Перегляд Физика низких температур за назвою

Сортувати за: Порядок: Результатів:

  • Vacuum polarization in graphene with a topological defect 
    Sitenko, Yu.A.; Vlasii, N.D. (Физика низких температур, 2008)
    The influence of a topological defect in graphene on the ground state of electronic quasiparticle excitations is studied in the framework of the long-wavelength continuum model originating in the tightbinding approximation ...
  • Valence fluctuations in Sn(Pb)₂P₂S₆ ferroelectrics 
    Yevych, R.; Haborets, V.; Medulych, M.; Molnar, A.; Kohutych, A.; Dziaugys, A.; Banys, Ju.; Vysochanskii, Yu. (Физика низких температур, 2016)
    The valence fluctuations which are related to the charge disproportionation of phosphorous ions P⁴⁺+P⁴⁺→P³⁺+P⁺⁵ are the origin of ferroelectric and quantum paraelectric states in Sn(Pb)₂P₂S₆ semiconductors. They involve ...
  • Valentin Peschansky and puzzles of magnetotransport 
    Slobodeniuk, A.O.; Sharapov, S.G.; Loktev, V.M. (Физика низких температур, 2011)
    We study two-dimensional electronic gas (2DEG) in the background of the Aharonov–Bohm and constant magnetic fields. The problem of ambiguity of the solutions of the Schrödinger equation is investigated by introducing a ...
  • Valentin Peschansky and puzzles of magnetotransport 
    Pudalov, V.M. (Физика низких температур, 2011)
    Starting from the 1950s, the Kharkov school of theoretical physics was one of the world leaders in the theory of metals. In particular, the research by V.G. Peschansky for many years was focused on studying the relationship ...
  • Validity of t–J approximation for extended Hubbard model with strong repulsion 
    Cheranovskii, V.O.; Klein, D.J.; Ezerskaya, E.V.; Tokarev, V.V. (Физика низких температур, 2017)
    It is shown that for finite cyclic systems described by two band Hubbard Hamiltonian with strong electron repulsion the reduction to effective t–J model may give incorrect description of the ground state symmetry due to ...
  • Validity of t–J approximation for extended Hubbard model with strong repulsion 
    Cheranovskii, V.O.; Klein, D.J.; Ezerskaya, E.V.; Tokarev, V.V. (Физика низких температур, 2018)
    It is shown that for finite cyclic systems described by two band Hubbard Hamiltonian with strong electron repulsion the reduction to effective t–J model may give incorrect description of the ground state symmetry due to ...
  • Variable range hopping in thin film with large dielectric constant 
    Shklovskii, B.I. (Физика низких температур, 2017)
    In a film with large dielectric constant κ the electric field of an electron spreads inside the film before exiting the film at large distances of order of κ d ( d is the film width). This leads to the logarithmic Coulomb ...
  • Variational approach to the problem of energy spectrum of surface electrons over liquid-helium film 
    Sokolov, S.S. (Физика низких температур, 2004)
    The energies of first two subbands are calculated, within a variational approach, for electrons localized over the surface of a liquid-helium film covering a solid substrate. The results are obtained for arbitrary value ...
  • Vertical spin transport in semiconductor heterostructures 
    Sankowski, P.; Kacman, P.; Majewski, J.A.; Dietl, T. (Физика низких температур, 2007)
    The Landauer—B ttiker formalism combined with the tight-binding transfer matrix method is employed to model vertical coherent spin transport within magnetization modulated semiconductor heterostructures based on GaAs. ...
  • Vibrational dynamical and thermodynamical characteristics of the superlattices based on the metal-hydrogen system 
    Feodosyev, S.B.; Gospodarev, I.A.; Grishaev, V.I.; Syrkin, E.S. (Физика низких температур, 2003)
    The phonon spectra and vibrational thermodynamical characteristics of the Pd-H superlattices are investigated. Results of our calculations give a possibility to agree the data of neutronographic and calorimetric experiments ...
  • Vibrational dynamics of solid molecular nitrogen to megabar pressures 
    Goncharov, A.F.; Gregoryanz, E.; Mao, H.-K.; Hemley, R.J. (Физика низких температур, 2001)
    We report the results of Raman and synchrotron infrared absorption measurements of several molecular phases of solid nitrogen to pressures above 100 GPa (300 K). Low- temperature vibrational spectra to 45 GPa are also ...
  • Viscosity and ultrasonic attenuation in ⁴He below 0.6 K 
    Chung-ln Um; Soo-Young Lee; George, T.F.; Pandey, L.N.; Adamenko, I.N. (Физика низких температур, 1997)
    Through a treatment of three-phonon processes, the wide-angle scattering rates and the absorption rates of phonons, which characterize viscosity and ultrasonic attenuation, respectively, are calculated for ⁴He below 0.6 ...
  • Visualizing intrinsic localized modes with a nonlinear micromechanical array 
    Sato, M.; Sievers, A.J. (Физика низких температур, 2008)
    Micromechanical cantilever arrays provide the opportunity to visualize the nonlinear excitations of a discrete nonlinear system in real time. Both stationary and moving localized nonlinear excitations can be produced ...
  • Voltage-driven superconducting weak link as a refrigerator for cooling of nanomechanical vibrations 
    Sonne, G.; Peña-Aza, M.E.; Shekhter, R. I.; Gorelik, L.Y.; Jonson, M. (Физика низких температур, 2010)
    We consider a new type of cooling mechanism for a suspended nanowire acting as a weak link between two superconductive electrodes. By applying a bias voltage over the system, we show that the system can be viewed as a ...
  • Vortex-antivortex dynamics driven by spin-torque in a nanocontact 
    Zaspel, C.E.; Kireev, V.E. (Физика низких температур, 2015)
    A spin-polarized current in a nanocontact has been shown to induce the formation of a magnetic vortex at the nanocontact by the Oersted field, and spin-torque drives the vortex core in an elliptical orbit about the ...
  • Vortex dynamics in thin elliptic ferromagnetic nanodisks 
    Wysin, G.M. (Физика низких температур, 2015)
    Vortex gyrotropic motion in thin ferromagnetic nanodisks of elliptical shape is described here for a pure vortex state and for a situation with thermal fluctuations. The system is analyzed using numerical simulations of ...
  • Vortex molecules in thin films of layered superconductors 
    Samokhvalov, A.V.; Mel’nikov, A.S.; Buzdin, A.I. (Физика низких температур, 2018)
    The seminal work of A.A. Abrikosov on the vortex lattices in type-II superconductors has triggered the creation and rapid development of the whole new field of condensed matter physics, namely, the physics of vortex matter ...
  • Vortex pattern and differential conductance in hole underdoped high-temperature superconductors with competing d-wave and antiferromagnetic orders 
    Peng, Lin; Liu, Yongsheng (Физика низких температур, 2013)
    Vortex charges in copper oxide high-temperature superconductors with hole underdoping are investigated by Bogoliubovde Gennes equations based on a model Hamiltonian with competing antiferromagnetic order and d-wave ...
  • Vortex polarity switching in magnets with surface anisotropy 
    Pylypovskyi, O.V.; Sheka, D.D.; Kravchuk, V.P.; Gaididei, Y. (Физика низких температур, 2015)
    Vortex core reversal in magnetic particle is essentially influenced by a surface anisotropy. Under the action of a perpendicular static magnetic field the vortex core undergoes a shape deformation of pillow- or barrel-shaped ...
  • Vortices in two-dimensional nanorings studied by means of the dynamical matrix method 
    Mamica, S. (Физика низких температур, 2015)
    This paper concerns an investigation of the spin wave excitations in magnetic nanoparticles. We provide a detailed derivation of the theoretical method for the determination of the normal modes of confined magnetic ...

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