Перегляд за автором "Omelyanchouk, A.N."

Сортувати за: Порядок: Результатів:

  • 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 ...
  • 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 ...
  • Coherent current states in mesoscopic four-terminal Josephson junction 
    Omelyanchouk, A.N.; Zareyan, M. (Физика низких температур, 1999)
    A theory is offered for the ballistic 4-terminal Josephson junction. The studied system consists of a mesoscopic two-dimensional normal rectangular layer which is attached on each side to the bulk superconducting banks ...
  • Dynamic behavior of Josephson-junction qubits: crossover between Rabi oscillations and Landau–Zener transitions 
    Shevchenko, S.N.; Kiyko, A.S.; Omelyanchouk, A.N.; Krech, W. (Физика низких температур, 2005)
    We study the dynamic behavior of a quantum two-level system with periodically varying parameters by solving numerically the master equation for the density matrix. Two limiting cases are considered: multiphoton Rabi ...
  • 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 ...
  • Frustration phenomena in Josephson point contacts between single-band and three-band superconductors 
    Yerin, Y.S; Omelyanchouk, A.N. (Физика низких температур, 2014)
    Within the formalizm of Usadel equations the Josephson effect in dirty point contacts between single-band and three-band superconductors is investigated. The general expression for the Josephson current, which is valid for ...
  • Igor Orestovich Kulik To the 75th birthday anniversary 
    Omelyanchouk, A.N.; Shekhter, R.I. (Физика низких температур, 2010)
    Igor Orestovich Kulik — a prominent physicist and an outstanding representative of Kharkov’s school of theoretical physics, Corresponding member of the National Academy of Sciences of Ukraine and Ukrainian State Prize ...
  • Josephson and spontaneous currents at the interface between two d-wave superconductors with transport current in the banks 
    Kolesnichenko, Yu.A.; Omelyanchouk, A.N.; Shevchenko, S.N. (Физика низких температур, 2004)
    A stationary Josephson effect in the ballistic contact of two d-wave superconductors with different orientation of the axes and with transport current in the banks is considered theoretically. We study the influence of ...
  • Josephson currents in point contacts between dirty two-band superconductors 
    Yerin, Y.S.; Omelyanchouk, A.N. (Физика низких температур, 2010)
    We developed microscopic theory of Josephson effect in point contacts between dirty two-band superconductors. The general expression for the Josephson current, which is valid for arbitrary temperatures, is obtained. This ...
  • Laser scanning microscopy of HTS films and devices (Review Article) 
    Zhuravel, A.P.; Sivakov, A.G.; Turutanov, O.G.; Omelyanchouk, A.N.; Anlage, S.M.; Lukashenko, A.; Ustinov, A.V.; Abraimov, D. (Физика низких температур, 2006)
    The work describes the capabilities of laser scanning microscopy (LSM) as a spatially-resolved method of testing high–Tc materials and devices. The earlier results obtained by the authors are briefly reviewed. Some novel ...
  • Magnetic flux locking in two weakly coupled superconducting rings 
    de Bruyn Ouboter, R.; Omelyanchouk, A.N.; Vol, E.D. (Физика низких температур, 1998)
    We have analyzed the quantum interference effects in the macroscopic "superconducting molecule". The composite system consists of two massive superconducting rings, each interrupted by a Josephson junction, which are at ...
  • Magnetic flux noise in the three Josephson junctions superconducting ring 
    Il’ichev, E.; Omelyanchouk, A.N. (Физика низких температур, 2008)
    We analyze the influence of noise on magnetic properties of a superconducting loop which contains three Josephson junctions. This circuit is a classical analog of a persistent current (flux) qubit. A loop supercurrent induced ...
  • Mesoscopic multiterminal Josephson structures. I. Effects of nonlocal weak coupling 
    Amin, M.H.S.; Omelyanchouk, A.N.; Zagoskin, A.M. (Физика низких температур, 2001)
    We investigate nonlocal coherent transport in ballistic four-terminal Josephson structures (in which bulk superconductors (terminals) are connected through a clean normal layer, e.g., a two-dimensional electron gas). ...
  • Multiphoton transitions in Josephson-junction qubits (Review Article) 
    Shevchenko, S.N.; Omelyanchouk, A.N.; Il'ichev, E. (Физика низких температур, 2012)
    Two basic physical models, a two-level system and a harmonic oscillator, are realized on the mesoscopic scale as coupled qubit and resonator. The realistic system includes moreover the electronics for controlling the distance ...
  • On massive photons inside a superconductor as follows from London and Ginzburg–Landau theory 
    de Bruyn Ouboter, R.; Omelyanchouk, A.N. (Физика низких температур, 2017)
    A phenomenological derivation in the frame of London's and Ginzburg-Landau theories is given that photons behave inside a superconductor as if they have mass.
  • On the self-consistent theory of Josephson effect in ballistic superconducting microconstrictions 
    Zareyan, M.; Kolesnichenko, Yu.A.; Omelyanchouk, A.N. (Физика низких температур, 1999)
    The microscopic theory of current-carrying states in the ballistic superconducting microchannel is presented. The effects of the contact length L on the Josephson current are investigated. For the temperatures T close to ...
  • Quantum behavior of a flux qubit coupled to a resonator 
    Omelyanchouk, A.N.; Shevchenko, S.N.; Greenberg, Ya.S.; Astafiev, O.; Il’ichev, E. (Физика низких температур, 2010)
    The detailed theory for the system of a superconducting qubit coupled to the transmission line resonator is presented. We describe the system by solving analytically and numerically the master equation for the density ...
  • Resonant effects in the strongly driven phase-biased Cooper-pair box 
    Shevchenko, S.N.; Omelyanchouk, A.N. (Физика низких температур, 2006)
    We study the time-averaged upper level occupation probability in a strongly driven two-level system, particularly its dependence on the driving amplitude x₀ and frequency ω and the energy level separation ∆E. In contrast ...
  • Soliton states in mesoscopic two-band-superconducting cylinders 
    Kuplevakhsky, S.V.; Omelyanchouk, A.N.; Yerin, Y.S. (Физика низких температур, 2011)
    In the framework of the Ginzburg-Landau approach, we present a self-consistent theory of specific soliton states in mesoscopic (thin-walled) two-band-superconducting cylinders in external parallel magnetic fields. Such ...
  • Spontaneous currents in Josephson junctions between unconventional superconductors and d-wave qubits (Review Article) 
    Kolesnichenko, Yu.A.; Omelyanchouk, A.N.; Zagoskin, A.M. (2004)
    The modern physics of superconductivity can be called the physics of unconventional superconductivity. The discovery of the d-wave symmetry of the order parameter in high-temperature superconductors and the triplet ...