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1.

Вид документа : Однотомное издание
Шифр издания :
Заглавие : International workshop on actual problems of condensed matter physics : Program. Book of abstracts
Выходные данные : Krasnoyarsk, 2017
Колич.характеристики :30 с
Коллективы : Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Siberian Federal Univercity, International Workshop on Actual Problems of Condensed Matter Physics (27 Mar. - 1 Apr. 2017; Krasnoyarsk/ Cheremushki) :
Содержание : Magnetic and transport properties of the epitaxial Fe3Si film on a Si substrate/ I. A. Bondarev. The magnetic anisotropy of the Fe and Fe(1-x)Si(x) thin films depend on/ I. A. Yakovlev [и др.]. Inverted opals as the Josephson networks of weak links/ S. I. Popkov [и др.]. Electronic structure and Fermi surface within the cluster perturbation theory in X-operators representation/ S. Nikolaev, V. I. Kuz'min, S. G. Ovchinnikov. DFT investigation of electronic and optical magnetic properties of one dimensional transition metal halide structuresTmHaI3/ A. S. Fedorov [и др.]. Effect of interatomic exchange interaction on spin crossover and Mott-Hubbard transition under high pressure and the physical properties of the low Earth’s mantle/ S. G. Ovchinnikov [и др.]. Extremely high magnetic-field sensitivity of charge transport in the Mn/SiO2/p-Si hybrid structure/ I. A. Tarasov [и др.]. Marnetic-field sensitivity of charge transport in silicon-based hybrid structures/ N. V. Volkov [et al.]. Fabrication of multi-terminal planar devices based on epitaxial Fe1-xSix films grown on Si(111)/ A. V. Lukyanenko, A. S. Tarasov, I. A. Tarasov [et al.] ; A. V. Luyanenko [и др.]. Magnetic field-driven lateral photovoltaic effect in the Fe/SiO2/p-Si hibrid structure with the Scottky barrier/ M. V. Rautskii [и др.]. Small angle X-ray scattering and atomic structure of aptamer biomolecules/ R. Moryachkov [и др.]. Iron silicides and pure iron epitaxial and highly-textured nanostructures on silicon: growth and their physical properties/ I. A. Tarasov [и др.]. Magnetic nanoparticles and DNA-aptamers conjugates for diagnostics and therapy of cancer/ A. E. Sokolov [и др.]. The microscopic origin of ferromagnetism in Fe silicides/ I. S. Sandalov [и др.].
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shaikhutdinov K. A., Balaev D. A., Popkov S. I., Petrov M. I.
Заглавие : Transport and magnetic properties of Y3/4Lu1/4Ba2Cu3O7+Y3Fe5O12 composites representing a Josephson-type superconductor-ferrimagnet-superconductor weak-link network
Разночтения заглавия :авие SCOPUS: Transport and Magnetic Properties of Y3/4Lu1/4Ba 2Cu3O7 + Y3Fe5O 12 Composites Representing a Josephson-Type Superconductor-Ferrimagnet-Superconductor Weak-Link Network
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2003. - Vol. 45, Is. 10. - P1866-1873. - ISSN 1063-7834, DOI 10.1134/1.1620087
Примечания : Cited References: 36
Предметные рубрики: RESISTIVE PROPERTIES
JUNCTION NETWORK
SYSTEM
TRANSITION
CURRENTS
VOLTAGE
STATE
FIELD
Аннотация: Y3/4Lu1/4Ba2Cu3O7 + Y3Fe5O12 composites with different volume ratios of the starting components were synthesized. The composites model an S-F-S Josephson junction network, where S stands for a superconductor and F, for a ferrimagnet. A study of the transport characteristics of the composites revealed that the temperature behavior of the electrical resistivity rho(T) below the superconducting transition point T-C is different in two regions separated by a temperature T-m. Below T-m, the current-voltage characteristics of the composites are nonlinear, while in the interval from T-C to T-m the values of rho(T) do not depend on the transport current j and magnetic field H. This behavior of rho(T, j ) and rho(T, H) is assigned to specific features of the tunneling of superconducting carriers through the ferrimagnetic layers separating HTSC grains in the composite. Magnetic measurements showed the diamagnetic response of HTSC grains to be lower in composites with a ferrimagnet. (C) 2003 MAIK "Nauka / Interperiodica".
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shaihutdinov K. A., Balaev D. A., Gokhfeld D. M., Popkov S. I., Petrov M. I.
Заглавие : Transport properties of HTSC-based composites: Modeling the random networks of Josephson weak links with magneto-active barriers.
Коллективы : NATO Advanced Research Workshop on Vortex Dynamics in High-Temperature Superconductors
Разночтения заглавия :авие SCOPUS: Transport properties of HTSC- based composites: Modeling the random networks of Josephson weak links with magneto-active barriers
Место публикации : J. Low Temp. Phys./ NATO Advanced Research Workshop on Vortex Dynamics in High-Temperature Superconductors (2002 ; May ; 17-22). - 2003. - Vol. 130, Is. 3-4. - P.347-381. - ISSN 0022-2291, DOI 10.1023/A:1022204705059
Примечания : Cited References: 89
Предметные рубрики: CURRENT-VOLTAGE CHARACTERISTICS
HIGH-TEMPERATURE SUPERCONDUCTORS
SNS JUNCTIONS
THERMAL FLUCTUATIONS
RESISTIVE PROPERTIES
PERCOLATION SYSTEM
TRANSITION
YBA2CU3O7
BOUNDARY
OXIDES
Ключевые слова (''Своб.индексиров.''): crystalline materials--electric insulators--josephson junction devices--magnetic devices--magnetic barriers--superconducting materials--composite
Аннотация: The results of the study of transport properties (temperature dependences of resistivity and critical current, current-voltage characteristics) of two-phase composites on the basis of Y3/4Lu1/4Ba2Cu3O7 high-temperature superconductor (HTSC) produced by fast baking technique and modelling networks of Josephson-type weak links are reported. Non-superconducting ingredients with different magnetic structures, insulators and normal metals, function as barriers between HTSC crystallites. Besides strong suppression of superconducting properties in HTSC composites with magnetic barriers, anomalous behavior of temperature dependences of resistivity below T-c of HTSC grains have been observed and investigated.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrov M. I., Balaev D. A., Shaikhutdinov K. A., Popkov S. I.
Заглавие : Anomalous transport properties of a paramagnetic NiTiO3+HTSC two-phase system representing a random Josephson junction network
Разночтения заглавия :авие SCOPUS: Anomalous transport properties of a paramagnetic NiTio3 + HTSC two-phase system representing a random Josephson junction network
Место публикации : JETP Letters. - 2002. - Vol. 75, Is. 3. - P.138-141. - ISSN 0021-3640, DOI 10.1134/1.1469500
Примечания : Cited References: 23
Предметные рубрики: RESISTIVE PROPERTIES
CRITICAL CURRENTS
SNS JUNCTIONS
COMPOSITES
Аннотация: Composites representing a network of random Josephson junctions and characterized by the compositions 92.5 at. % Y3/4Lu1/4Ba2Cu3O7 + 7.5 at. % NiTiO3 and 92.5 at. % Y3/4Lu1/4Ba2Cu3O7 + 7.5 at.% MgTiO3 are synthesized, and their magnetoresistance properties are studied. The temperature dependence of the resistance R(T) measured for the composite that contains the paramagnetic NiTiO3 compound exhibits a characteristic feature below the superconducting transition temperature T-c of the high-T-c superconductor, namely, a region where R is independent of the current j and weakly depends on the magnetic field H. Below a certain temperature T-m, a strong dependence of R on j and H is observed, which is peculiar to a network of Josephson junctions. The dependences R(T, j, H) obtained for the "reference" samples with the nonmagnetic MgTiO3 compound exhibit no such features. The anomalous behavior of the HTSC + NiTiO3 composite is explained by the effect produced by the magnetic moments of Ni atoms in the insulating barriers on the transport current. (C) 2002 MAIK "Nauka / Interperiodica".
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Alekseev K. N., Kusmartsev F. V.
Заглавие : Pendulum limit, chaos and phase-locking in the dynamics of ac-driven semiconductor superlattices
Место публикации : Phys. Lett. A: ELSEVIER SCIENCE BV, 2002. - Vol. 305, Is. 5. - P281-288. - ISSN 0375-9601, DOI 10.1016/S0375-9601(02)01420-2
Примечания : Cited References: 60
Предметные рубрики: STRANGE NONCHAOTIC ATTRACTORS
DC VOLTAGE GENERATION
JOSEPHSON-JUNCTIONS
GAAS/ALAS SUPERLATTICE
BLOCH OSCILLATIONS
TERAHERTZ RADIATION
ELECTRIC-FIELD
THZ RADIATION
FREQUENCY
TRANSPORT
Ключевые слова (''Своб.индексиров.''): semiconductor superlattice--pendulum--chaos--phase-locking--josephson junction--chaos--josephson junction--pendulum--phase-locking--semiconductor superlattice--analytic method--analytical parameters--article--dynamics--electric potential--semiconductor--temperature
Аннотация: We describe a limiting case when nonlinear dynamics of an ac-driven semiconductor superlattice in the miniband transport regime is governed by a periodically forced and damped pendulum equations. We find analytically the conditions for a transition to chaos. With increasing temperature the chaos disappears. We also discuss fractional do voltage states in a superlattice originating from phase-locked states of the pendulum. (C) 2002 Elsevier Science B.V. All rights reserved.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Ospishchev S. V., Petrov M. I., Aleksandrov K. S.
Заглавие : The effect of paramagnetic impurities in normal metal on the critical current in a network of S-N-S Josephson junctions in bulk Y3/4Lu1/4Ba2Cu3O7+BaPb(1-x)Fe(x)O(3)composites
Разночтения заглавия :авие SCOPUS: The effect of paramagnetic impurities in normal metal on the critical current in a network of S-N-S Josephson junctions in bulk Y3/4Lu1/4Ba2Cu3O7 + BaPb1-xFexO3 composites
Место публикации : Supercond. Sci. Technol. - 2003. - Vol. 16, Is. 1. - P.60-64. - ISSN 0953-2048, DOI 10.1088/0953-2048/16/1/311
Примечания : Cited References: 41
Предметные рубрики: CURRENT-VOLTAGE CHARACTERISTICS
WEAK LINKS
RESISTIVE PROPERTIES
MAGNETIC-IMPURITIES
EXCHANGE FIELD
SNS JUNCTIONS
F-S
COMPOSITES
SUPERCONDUCTOR
SCATTERING
Ключевые слова (''Своб.индексиров.''): critical currents--interfaces (materials)--josephson junction devices--paramagnetism--transport properties--non-superconducting ingredient--paramagnetic impurities--superconductor normal metal superconductor--oxide superconductors
Аннотация: Bulk Y3/4Lu1/4Ba2Cu3O7 + BaPb1-xFexO3 composites representing a model of a network of superconductor-normal metal-superconductor (SNS) Josephson junctions with paramagnetic impurities (Fe) in the N layers have been prepared. The transport properties of the composites have been studied. An exponential decay of the critical current with increasing Fe content in the non-superconducting ingredient of the composite has been observed. Such a behaviour is accounted for in terms of the de Gennes proximity effect theory.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shaykhutdinov K. A., Balaev D. A., Popkov S. I., Vasilyev A. D., Martyanov O. N., Petrov M. I.
Заглавие : Thermally activated dissipation in a novel foamed Bi-based oxide superconductor in magnetic fields
Место публикации : Supercond. Sci. Technol.: IOP PUBLISHING LTD, 2007. - Vol. 20, Is. 6. - P491-494. - ISSN 0953-2048, DOI 10.1088/0953-2048/20/6/001
Примечания : Cited References: 20
Предметные рубрики: FLUX
BI2SR2CACU2O8+DELTA
MECHANISM
PHASE
FILMS
Ключевые слова (''Своб.индексиров.''): bismuth compounds--josephson junction devices--magnetic field effects--transport properties--resistive transitions--thermally activated dissipation--oxide superconductors
Аннотация: The transport properties of a novel foamed superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox have been studied. As the analysis of resistive transitions in a magnetic field shows, the dissipation follows a thermally activated flux creep model with the temperature- independent pinning potential in S-N-S-type Josephson junctions.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Popkov S. I., Balaev D. A., Shaihutdinov K. A., Petrov M. I.
Заглавие : Crossover from S-I-S to S-F-S junctions in composites Y3/4Lu1/4Ba2Cu3O7+Y-3(Al1-xFex)(5)O-12
Разночтения заглавия :авие SCOPUS: Crossover from S-I-S to S-F-S junctions in composites Y3/4Lu1/4Ba2Cu3O7 + Y3(Al1-xFex)5O12
Место публикации : Physica C: ELSEVIER SCIENCE BV, 2007. - Vol. 460: 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (JUL 09-14, 2006, Dresden, GERMANY). - P1311-1312. - ISSN 0921-4534, DOI 10.1016/j.physc.2007.03.348
Примечания : Cited References: 4
Ключевые слова (''Своб.индексиров.''): s-f-s structures--high-t-c superconductors--high-tc superconductors--s-f-s structures--ferrimagnetic materials--garnets--josephson junction devices--magnetization--transport properties--yttrium alloys--critical concentration--ferrimagnet junctions--magneto-active ions--super current carriers--high temperature superconductors
Аннотация: The transport properties of the two phases composites based on Y3/4Lu1/4Ba2Cu3O7 (YBCO) and Y-3(Al1-xFex)(5)O-12 (X = 0-0... 1.0) have been studied to investigate the effect of magnetic ordering in garnet on superconducting properties of the composites. The composites represent network of Josephson junctions where the non-superconducting ingredient (garnet) acts as barriers separating YBCO grains. It is found that magneto-active ions (Fe) in garnet are responsible for an additional suppression of Josephson coupling in the composites. At some critical concentration of Fe atoms full suppression of super current is observed in a temperature range from T-C of YBCO grains down to the characteristic temperature T,,,. This behavior is attributed to the interaction of super current carriers with spins of Fe atoms located in the barriers. The crossover from S-I-S (S-superconductor, I-insulator) to S-F-S (F-ferrimagnet) junctions is observed in the compdsites Y3/4Lu1/4Ba2Cu3O7 + Y-3(Al1-xFex)(5)O-12 with x increase. (c) 2007 Elsevier B.V. All rights reserved.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrov M. I., Balaev D. A., Gokhfeld D. M.
Заглавие : Andreev reflection and experimental temperature dependences of the critical current in heterogeneous high-temperature superconductors (polycrystals and related composites)
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2007. - Vol. 49, Is. 4. - P619-626. - ISSN 1063-7834, DOI 10.1134/S106378340704004X
Примечания : Cited References: 41
Предметные рубрики: CURRENT-VOLTAGE CHARACTERISTICS
NORMAL-METAL
WEAK LINKS
JOSEPHSON-JUNCTIONS
MODEL
SCATTERING
TRANSPORT
DISSIPATION
HYSTERESIS
Аннотация: The temperature dependences of the critical current of Y3/4Lu1/4Ba2Cu3O7 polycrystalline high-temperature superconductors subjected to annealing for different times and those of Y3/4Lu1/4Ba2Cu3O7 + BaPbO3 composites were measured. The results obtained were analyzed in terms of the Gunsenheimer-Schussler-Kummler theory considering the Andreev reflection of carriers in a "superconductor-normal metal-superconductor" (S-N-S) junction. Good agreement between the experimental and theoretical temperature dependences of the critical current over a wide temperature range for polycrystals with both natural and artificially created boundaries (composites) made it possible to estimate the effective length of grain boundaries in the high-temperature superconductors. It was revealed that the critical current density measured at 4.2 K is an exponential function of the length of grain boundaries in samples of both types.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Isohatala J., Alekseev K. N., Kurki L. T., Pietilainen P.
Заглавие : Symmetry breaking in a driven and strongly damped pendulum
Место публикации : Phys. Rev. E: AMERICAN PHYSICAL SOC, 2005. - Vol. 71, Is. 6. - Ст.66206. - ISSN 1539-3755, DOI 10.1103/PhysRevE.71.066206
Примечания : Cited References: 37
Предметные рубрики: DC VOLTAGE GENERATION
SEMICONDUCTOR SUPERLATTICES
JOSEPHSON-JUNCTIONS
BLOCH OSCILLATIONS
FORCED PENDULUM
CHAOS
FREQUENCY
SYSTEMS
RECTIFICATION
STANDARD
Ключевые слова (''Своб.индексиров.''): periodically driven pendulums--symmetry breaking--bifurcation (mathematics)--damping--dynamics--nonlinear systems--semiconductor superlattices--pendulums
Аннотация: We examine the conditions for appearance of a symmetry breaking bifurcation in damped and periodically driven pendulums in the case of strong damping. We show that symmetry breaking, unlike other nonlinear phenomena, can exist at high dissipation. We prove that symmetry breaking phases exist between phases of symmetric normal and symmetric inverted oscillations. We find that symmetry broken solutions occupy a smaller region of the pendulum's parameter space in comparison to the statements made in earlier considerations [McDonald and Plischke, Phys. Rev. B 27, 201 (1983)]. Our research on symmetry breaking in a strongly damped pendulum is relevant to an understanding of the phenomena of dynamic symmetry breaking and rectification in pure ac driven semiconductor superlattices.
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