Перегляд за автором "Bondarenko, A.V."

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 ...
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 ...
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 ...
Effect of oxygen deficit on temperature dependence of excess conductivity in Y₁Ba₂Cu₃O₇-δ single crystals

Bondarenko, A.V.; Vovk, R.V.; Obolensky, M.A.; Chebotaev, N.N. (Functional Materials, 2006)

Evolution of the excess conductivity in Y₁Ba₂Cu₃O₇-δ single crystals has been studied under stepwise oxygen removal by heat treatment. The concentration dependence of the coherence length along С axis εc(0) on the oxygen ...
Effect of twin boundaries on scattering processes of normal and fluctuating carriers in YBa₂Cu₃O₇₋δ single crystals

Obolensky, M.A.; Vovk, R.V.; Bondarenko, A.V. (Functional Materials, 2006)

Effect of twin boundaries on the normal and fluctuating conductivity of YBaCuO single crystals has been studied. The temperature dependence of the excess conductivity has been shown to be described satisfactorily by 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 ...
Interplay of point and planar defects in the phase state formation and dynamics of Abrikosov vortices in YBa₂Cu₃O₇-δ crystals

Petrusenko, Yu.T.; Bondarenko, A.V. (Functional Materials, 2009)

The rotation of magnetic field H off the plane of twin boundaries (TBs) has been found to induce transition of an ordered vortex solid phase to a disordered one due to transverse deformations of vortex lines near the TBs. ...
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. ...
Magnetoresistive study of the antiferromagnetic-weak ferromagnetic transition in single-crystal La₂CuO₄+δ

Belevtsev, B.I.; Dalakova, N.V.; Savitsky, V.N.; Bondarenko, A.V.; Panfilov, A.S.; Braude, I.S. (Физика низких температур, 2004)

Resistive measurements were made to study the magnetic field-induced antiferromagnetic (AF)—weak ferromagnetic (WF) transition in the La₂CuO₄ single crystal. The magnetic field (dc or pulsed) was applied normally to the ...
On a spherical code in the space of spherical harmonics

Bondarenko, A.V. (Український математичний журнал, 2010)

We propose a new method for the construction of new “nice” configurations of vectors on the unit sphere S d with the use of spaces of spherical harmonics.
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 ...
The project of a high-power FEL driven by an SC ERL at KAERI

Miginsky, S.V.; Bondarenko, A.V.; Lee, B.C.; Park, S.H.; Jeong, Y.U.; Han, Y.H.; Kim, S.C. (Вопросы атомной науки и техники, 2006)

The project of a high-power FEL at Korea Atomic Energy Research Institute and its recent status are described. The FEL is driven by a superconducting energy recovery linac. The first-stage machine will operate in the far ...

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Перегляд за автором "Bondarenko, A.V."

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