Перегляд за автором "Loktev, V.M."

Сортувати за: Порядок: Результатів:

  • Gaididei, Yu.B.; Loktev, V.M.; Naumovets, A.G.; Zagorodny, A.G. (Condensed Matter Physics, 2013)
    Motivated by recent research of Nikitin et al. [J. Phys. D: Appl. Phys., 2009, 49, 055301], we examine the effects of interatomic interactions on adatom surface diffusion. By using a mean-field approach in the random walk ...
  • 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 ...
  • Loktev, V.M.; Turkowski, V.M. (Физика низких температур, 2004)
    The superconducting properties of a two-dimensional metallic system with arbitrary carrier density and both local and various types of the indirect boson-exchange attractive interaction in the cases of s- and d-wave ...
  • Suprunenko, Y.F.; Gorbar, E.V.; Sharapov, S.G.; Loktev, V.M. (Физика низких температур, 2008)
    In the tight-binding approximation, we take into account the next-to-nearest neighbor hopping in graphene that leads to nonrelativistic-like corrections in its low energy spectrum. The electronic density of states in a ...
  • Loktev, V.M.; Pogorelov, Yu.G. (Физика низких температур, 2001)
    We consider the interplay between superconducting coupling and dopant impurity scattering of charge carriers in planar square lattice systems and examine the physical conditions (doping level, temperature, local ...
  • Krive, I.V.; Loktev, V.M.; Shekhter, R.I. (Физика низких температур, 2008)
    This issue of the journal «Fizika Nizkikh Temperatur» is dedicated to the discovery of graphene — a monolayer graphite — in 2004.
  • Loktev, V.M.; Turkowski, V.M. (Физика низких температур, 2000)
    The fermion Green function and spectral characteristics for the 2D Frohlich model of superconductivity at static fluctuations in the phase of the order parameter are calculated. The results demonstrate strongly non-Fermi-liquid ...
  • Loktev, V.M.; Pogorelov, Yu.G. (Физика низких температур, 2012)
    A Green function analysis has been developed for quasiparticle spectrum of a 2D graphene sheet in presence of different types of substitutional disorder, including vacancies. The anomalous character of impurity effects ...
  • Pogorelov, Yu.G.; Santos, M.C.; Loktev, V.M. (Физика низких температур, 2011)
    The revision is made of Green function methods that describe the dynamics of electronic quasiparticles in disordered superconducting systems with d-wave symmetry of order parameter. Various types of impurity perturbations ...
  • Skrypnyk, Yu.V.; Loktev, V.M. (Физика низких температур, 2007)
    It is shown that in a two-dimensional system with the linear dispersion a resonance is present in the Dirac point vicinity, when the impurity perturbation magnitude exceeds the bandwidth. The corresponding spectrum rea ...
  • Gomonay, H.V.; Kondovych, S.V.; Loktev, V.M. (Физика низких температур, 2012)
    Nanoelectromagnetomechanical systems (NEMMS) open up a new path for the development of high speed autonomous nanoresonators and signal generators that could be used as actuators, for information processing, as elements ...
  • Loktev, V.M.; Turkowski, V.M. (Condensed Matter Physics, 1998)
    An attempt to describe the bell-shape dependence of the critical temperature of high-T<sub>c</sub> superconductors on the charge carrier density is made. It is proposed to explain its linear increase in the region of ...
  • Khalack, J.M.; Loktev, V.M. (Физика низких температур, 2003)
    A simple planar model for an orientational ordering of threefold molecules on a triangular lattice modeling a close-packed (111) plane of fullerite is considered. The system has 3-sublattice ordered ground state which ...
  • Gaididei, Yu.B.; Loktev, V.M. (Физика низких температур, 2006)
    Basing on the structural peculiarity of two-layer graphene which consists of translational and energetical nonequivalency of carbon atoms from different sublattices, it is shown that the density of long-wave electronic ...
  • Gomonaj, E.V.; Loktev, V.M. (Физика низких температур, 1999)
    Macroscopic magnetoelastic domain structure of the defectless layered antiferromagnet of CoCl₂-type with the "easy-plane" magnetic anisotropy is studied theoretically in the framework of phenomenological approach. In ...
  • Pogorelov, Y.G.; Loktev, V.M. (Condensed Matter Physics, 2018)
    A theoretical analysis is presented on possible effects of disorder by dopants in high-temperature superconducting cuprate perovskites, to define their basic spectra of spin and electronic excitations, and the subsequent ...
  • Loktev, V.M.; Quick, R.M.; Sharapov, S.G. (Физика низких температур, 2000)
    The presence of nonmagnetic impurities in a 2D “bad” metal depresses the superconducting Berezinskii–Kosterlitz–Thouless transition temperature while leaving the pairing energy scale unchanged. Thus the region of the ...
  • Gomonay, H.V.; Kornienko, I.G.; Loktev, V.M. (Condensed Matter Physics, 2010)
    Shape variation under the action of small external fields is a peculiar feature of soft matter. In the present paper we demonstrate a possibility of the analogous shape variation in the solids that combine the properties ...
  • Gusynin, V.P.; Loktev, V.M.; Luk’yanchuk, I.А.; Sharapov, S.G.; Varlamov, A.A. (Физика низких температур, 2014)
    We present an overview of our recent results on quantum magnetic oscillations in new functional materials. We begin with the Lifshitz and Kosevich approach for quasi-2D layered materials and obtain general formulas for the ...
  • Ivanova, I.M.; Kalita, V.M.; Pashkov, V.O.; Loktev, V.M. (Condensed Matter Physics, 2008)
    Theoretical description of magnetic properties of antiferromagnetic state, induced by the longitudinal magnetic eld, in the Van Vleck singlet magnet with single-ion anisotropy of easy-plane type and ion spin S = ...