Перегляд за автором "Obolenskii, M.A."

Результати 1-14 з 14

2D−3D crossover of the in-plane paraconductivity in optimal doped ReBa₂Cu₃O₇₋δ (Re = Y, Ho) single crystals

Vovk, R.V.; Obolenskii, M.A.; Bondarenko, A.V.; Goulatis, I.L.; Chroneos, A.I. (Физика и техника высоких давлений, 2007)

The effect of the fluctuation paraconductivity in optimal oxygen-doped ReBa₂Cu₃O₇₋δ (Re = Y, Ho) single crystals has been investigated. The results indicate that the theoretical model of Aslamazov–Larkin (AL) describes the ...
Anisotropy of the critical curremt due to twin planes and vortex melting in YBa₂Cu₃O₇₋x single crystals

Obolenskii, M.A.; Bondarenko, A.V.; Shklovskij, V.A.; Revyakina, M.G. (Физика низких температур, 1996)

We have measured the anisotropy of the critical current due to vortex pinning by twin boundaries and compared it with calculated values. We have also investigated current-voltage characteristics, which allowed us to obtain ...
Atomistic models for R1–xPrxBa2Cu3O7–δ (R = Y and lanthanides) and related oxides

Chroneos, A.I.; Goulatis, I.L.; Vovk, R.V.; Zavgorodniy, A.A.; Obolenskii, M.A.; Petrenko, A.G.; Samoilov, A.V. (2009)

We report the results of defect structures studies of silicon implanted at different temperatures with Mn ions (Si:Mn) and of GaMnAs layers, next annealed under ambient and high pressures. An influence of annealing conditions ...
Atomistic studies of Li+ migration in Y₂O₃ and the structure of related oxides

Chroneos, A.I.; Busker, G.; Goulatis, I.L.; Vovk, R.V.; Zavgorodniy, A.A.; Obolenskii, M.A.; Petrenko, A.G.; Pinto Simoes, V.M.; Samoilov, A.V. (Физика и техника высоких давлений, 2009)

Atomistic computer simulation techniques based on energy minimization have been employed to predict the equilibrium lattice parameters and volumes of a series of rare-earth sesquioxides and their polymorphs. The results ...
Condictivity anisotropy and pseudogap state evolution in HoBa₂Cu₃O₇₋δ single crystals of a present flat defect topology at decreasing oxygen concentration

Obolenskii, M.A.; Vovk, R.V.; Bondarenko, A.V.; Goulatis, I.L. (Functional Materials, 2006)

The temperature dependences of electrical resistance along the c-axis and in the abplane for HoBa₂Cu₃O₇₋δ single crystals with various oxygen content have been measured. The temperature dependences of the pseudogap value ...
Conductivity anisotropy in Y₁₋zPrzBa₂Cu₃O₇₋delta single crystals with different praseodymium content

Vovk, R.V.; Nazyrov, Z.F.; Obolenskii, M.A.; Zavgorodniy, A.A.; Pinto Simoes, V.M. (Functional Materials, 2011)
Creep and depinning of vortices in nontwinned YBa₂Cu₃O₆.₈₇ single crystal

Bondarenko, A.V.; Zavgorodniy, A.A.; Lotnik, D.A.; Obolenskii, M.A.; Vovk, R.V. (Физика низких температур, 2008)

We present the results of transport study of vortex dynamics in YBa₂Cu₃O₆.₈₇ crystals in the magnetic field H||c. In low magnetic fields, H<4 kOe, the measurements were performed in the range of vortex velocities v=10⁻⁴–2 ...
Evolution of the pseudogap state in HTSC single crystals ReBa₂Cu₃O₇₋δ (Re=Y, Ho) doped with Al and Pr

Vovk, R.V.; Zavgorodniy, A.A.; Obolenskii, M.A.; Samoilov, A.V.; Biletskiy, Y.V.; Pinto Simoes, V.M. (Functional Materials, 2009)

Studied has been the effect of oxygen deficiency as well as of a low (up to 5 %) Al and Pr doping on conductivity in the basis plane of the ReBa₂Cu₃O₇₋δ (Re=Y, Ho) HTSC single crystals. The excess conductivity Δσ(T) of the ...
Excess conductivity and pseudogap state in YBa₂Cu₃-yAlyO₇₋δ single crystals with a system of undirectional twin boundaries

Vovk, R.V.; Obolenskii, M.A.; Bondarenko, A.V. (Functional Materials, 2007)

The conductivity in the basis plane of YBa₂Cu₃-yAlyO₇₋δ single crystals with a pre-specified topology of plane defects has been investigated. The results indicate that the doping with Al results in increased number of the ...
Localization effects and pseudogap state in YBa₂Cu₃O₇– single crystals with different oxygen content

Obolenskii, M.A.; Vovk, R.V.; Bondarenko, A.V.; Chebotaev, N.N. (Физика низких температур, 2006)

We have investigated the evolution of the temperature dependence of the in-plane and off-plane conductivity of YBa₂Cu₃O₇₋δ single crystals due to the decrease of the oxygen content in the samples caused by a heat treatment. ...
Metal - dielectric transition and temperature dependence of the pseudo-gap in YBa₂Cu₃O₇-δ single crystals: effect of pressure and oxygen nonstoichiometry

Zavgorodniy, A.A.; Vovk, R.V.; Obolenskii, M.A.; Samoilov, A.V.; Revyakina, M.G.; Biletskiy, E.V.; Pinto Samoes, V.M. (Functional Materials, 2010)
Relaxation of electrical resistance and phase separation in ReBa₂Cu₃O₇-delta (Re = Y, Ho) single crystals strongly underdoped with oxygen

Zavgorodniy, A.A.; Vovk, R.V.; Obolenskii, M.A.; Nazyrov, Z.F.; Roshko, S.; Pinto Simoes, V.M. (Functional Materials, 2011)
Relaxation processes in nonstoichiometric YBa₂Cu₃O₇-δ single crystals during annealing and at high pressure

Obolenskii, M.A.; Vovk, R.V.; Bondarenko, A.V. (Functional Materials, 2005)

The critical temperature relaxation processes and resistivity for YBa₂Cu₃O₇-δ single crystals with oxygen deficit δ ≤ 0,5 during annealing at room temperature and in case of high hydrostatic pressure up to 7 kbar have ...
Superconductivity suppression at twin boundaries and longitudinal and transversal transport anisotropy in oxygen deficient YBa₂Cu₃O₇₋ₓ single crystals

Vovk, R.V.; Obolenskii, M.A.; Zavgorodniy, A.A.; Bondarenko, A.V.; Goulatis, I.L.; Chebotaev, N.N. (Functional Materials, 2007)

The temperature dependences of the conductivity along and across the basis plane have been measured in YBa₂Cu₃O₇₋ₓ single crystals with different oxygen non-stoichiometry. In the oxygen-deficit samples, an inhomogeneous ...

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Перегляд за автором "Obolenskii, M.A."

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