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Anomalous light diffraction by cholesterics encapsulated in films / V. F. Shabanov, S. Ya. Vetrov, G. M. Zharkova, V. M. Khachaturyan // Journal of Molecular Electronics. - 1990. - Vol. 6, Is. 3. - P. 141-144

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Доп.точки доступа:
Shabanov, V. F.; Шабанов, Василий Филиппович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Zharkova, G. M.; Khachaturyan, V. M.
}
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Microwave therapy in treatment of the eye diseases / V. V. Ivanov [и др.] // Int. Conf. on Magnetic Electronics (ISME'92) : abstracts / предс. орг. ком. K. S. Aleksandrov ; зам. предс. орг. ком. G. A. Petrakovskii ; чл. прогр. ком. Borovik-Romanov A. S. ; секрет. орг. ком. A. I. Pankrats ; чл. орг. ком. Arrott A. S. [и др.]. - Krasnoyarsk, 1992. - P. 86

Доп.точки доступа:
Aleksandrov, K. S. \предс. орг. ком.\; Александров, Кирилл Сергеевич; Petrakovskii, G. A. \зам. предс. орг. ком.\; Петраковский, Герман Антонович; Borovik-Romanov, A. S. \чл. прогр. ком.\; Pankrats, A. I. \секрет. орг. ком.\; Панкрац, Анатолий Иванович; Arrott A. S. \чл. орг. ком.\; Le Gall H. \чл. орг. ком.\; Kalinikos B. A. \чл. орг. ком.\; Kao Y. H. \чл. орг. ком.\; Lebed B. M. \чл. орг. ком.\; Ozhogin V. I. \чл. орг. ком.\; Slonczewski J. C. \чл. орг. ком.\; Ivanov, V. V.; Иванов В. В.; Vovchenko, S. P.; Barhatova, I. A.; Petrakovskii, G. A.; Drokina, T. V.; Дрокина, Тамара Васильевна; International Conference on Magnetic Electronics(1992 ; Krasnoyarsk)
}
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    Arkhipkin, V. G.
    Adiabatic propagation of short pulses under conditions of electromagnetically induced transparency / V. G. Arkhipkin, I. V. Timofeev // Quantum Electron. - 2000. - Vol. 30, Is. 2. - P. 180-184, DOI 10.1070/QE2000v030n02ABEH001683. - Cited References: 31 . - ISSN 1063-7818
   Перевод заглавия: Адиабатическое распространение коротких импульсов в условиях электромагнитно-индуцированной прозрачности

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
POPULATION TRANSFER
   LASER-PULSES
   INTERFERENCE
   ENHANCEMENT
   COHERENCE
   QUANTUM
   SYSTEMS
   INDEX
Аннотация: The spatial and temporal dynamics of two short pulses propagating in an optically dense medium of resonant three-level Lambda-atoms is investigated numerically and analytically. The maximum coherence for the Raman transition due to coherent population trapping. it is shown that, at the initial stage of propagation, the waveforms of such pulses only slightly change along the length of the medium, which may considerably exceed the length of linear absorption for a single weak pulse. As the length of the absorbing medium increases, the energy of the probe (first) pulse is completely transferred into the second (control) pulse.

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Публикация на русском языке Архипкин, Василий Григорьевич. Адиабатическое распространение коротких импульсов в условиях электромагнитно-индуцированной прозрачности [Текст] / В. Г. Архипкин, И. В. Тимофеев // Квант. электрон. - 2000. - Т. 30 № 2. - С. 180-184

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Архипкин, Василий Григорьевич
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    Euro-asian symposium "Trends in magnetism" (EASTMAG-2004) : Abstract book / Рос. акад. наук, Сиб. отд-ние, Ин-т физики им. Л.В. Киренского, Краснояр. гос. ун-т, Краснояр. гос. технич. ун-т, Урал. отд-ние , Ин-т физики металлов. Euro-asian symp. "Trends in magnetism" ; предс. орг. комит. К. С. Александров ; зам. предс. С. Г. Овчинников ; чл. орг. комит. В. А. Игнатченко [и др.]. - Krasnoyarsk : [б. и.], 2004. - 418 с. - Bibliogr. at the end of the articles - Auth. ind. - 350 экз. - Б. ц.
Перевод заглавия: Евро-азиатский симпозиум "Прогресс в магнетизме"
Приложение:
Program of Euro-asian symposium "Trends in magnetism" (EASTMAG-2004). - Krasnoyarsk : Kirensky Instit. Phys. SB RAS, 2004. - 83
    Содержание:
Fundamental magnetic properties
Transport phenomena and spin electronics
Magnetism and strongly correleted electron systems
Spin glasses, disordered magnetic systems
Dynamics of spin systems and magnetic resonances
Magnetooptics and X-ray magnetooptics
Magnetic mechanism of the superconductivity
Domain structure and magnetization processes
Thin magnetic films and multilayers
Magnetic particles and nanocrystalline materials
Molecular magnetism
Magnetic storage/memory and applications
   Перевод заглавия: Евро-азиатский симпозиум "Прогресс в магнетизме"

Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Александров, Кирилл Сергеевич \предс. орг. ком.\; Aleksandrov, K. S.; Овчинников, Сергей Геннадьевич \зам. предс.\; Ovchinnikov, S. G.; Игнатченко, Вальтер Алексеевич \чл. орг. ком.\; Ignatchenko, V. A.; Сапожников, В. \чл. орг. ком.\; Патрин, Геннадий Семёнович \чл. орг. ком.\; Patrin, G. S.; Вальков, Валерий Владимирович \чл. орг. ком.\; Val'kov, V. V.; Волков, Никита Валентинович \чл. орг. ком.\; Volkov, N. V.; Казак, Наталья Валерьевна \чл. орг. ком.\; Kazak, N. V.; Российская академия наук; Сибирское отделение РАН; Институт физики им. Л.В. Киренского Сибирского отделения РАН; Красноярский государственный университет; Красноярский государственный технический университет; Институт физики металлов Уральского отделения РАН; Научный совет по физике конденсированных сред РАН; Научный совет РАН по физике низких температур; Красноярский научный центр Сибирского отделения РАН; Euro-asian symposium "Trends in magnetism" (2 ; 2004 ; Aug. 24-27 ; Krasnoyarsk); "Trends in magnetism", Euro-Asian Symposium (2 ; 2004 ; Aug. 24-27 ; Krasnoyarsk)
Свободных экз. нет}
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Magnetic ordering of NdFe3(BO3)(4) studied by infrared absorption spectroscopy / E. P. Chukalina [et al.] // Phys. Lett. A. - 2004. - Vol. 322, Is. 3-4. - P. 239-243, DOI 10.1016/j.physleta.2003.12.062. - Cited References: 8 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary
Рубрики:
CRYSTALS
Кл.слова (ненормированные):
ferroborates -- Fourier-transform spectroscopy -- magnetic ordering -- Ferroborates -- Fourier-transform spectroscopy -- Magnetic ordering -- iron -- neodymium -- absorption spectroscopy -- article -- electronics -- infrared spectroscopy -- magnetism -- molecular interaction -- molecular physics -- temperature
Аннотация: We report the first measurements of the optical spectra of NdFe3(BO3)(4), a promising material for optoelectronics. Exchange splitting of Nd3+ spectral lines due to magnetic interactions in a magnetically ordered state was observed. The temperature dependences of the exchange splitting and of the linewidth point to the temperature T-c 33 +/- 1K of the magnetic ordering in both iron and neodymium. magnetic subsystems. 2004 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow Region, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Chukalina, E. P.; Kuritsin, D. Y.; Popova, M. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Kharlamova, S. A.; Temerov, V. L.; Темеров, Владислав Леонидович
}
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Gavrichkov, V. A.
Doping dependent electronic structure of cuprates and the effective low energy Hamiltonian for the magnetic pairing / V. A. Gavrichkov, M. M. Korshunov, S. G. Ovchinnikov // Int. J. Mod. Phys. B. - 2005. - Vol. 19, Is. 1-3. - P. 247-249, DOI 10.1142/S0217979205028335. - Cited References: 14 . - ISSN 0217-9792

РУБ Physics, Applied + Physics, Condensed Matter + Physics, Mathematical
Рубрики:
COPPER OXIDES
SYMMETRY
MODEL
Кл.слова (ненормированные):
electronic structure -- strong electron correlations -- magnetic mechanism of pairing -- Electronic structure -- Magnetic mechanism of pairing -- Strong electron correlations -- copper derivative -- calculation -- chemical reaction -- chemical structure -- conference paper -- correlation analysis -- electron -- electronics -- energy -- hybridization -- intermethod comparison -- magnetism -- mathematical analysis -- mathematical model
Аннотация: The properties of the normal and superconducting phases of p- and n-type cuprates are investigated in the appropriate low-energy models in the approximation beyond Hubbard I considering spin fluctuations. Calculated chemical potential dependence on doping, Fermi surface and T,(x) phase diagram for n-type cuprates are in remarkably good agreement with the experimental ones. Comparison of the singlet-triplet t-J model with simple t-J model shows that the spin-exciton mechanism originated from singlet-triplet hybridization leads to small contribution to the T-c(x) - optimal doping value becomes slightly lower and the maximum value of T-c become slightly higher.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
L. V. Kirensky Inst. Phys. S., Russian Academy of Science, Akademgorodok, 660036, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Korshunov, M. M.; Коршунов, Максим Михайлович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Гавричков, Владимир Александрович; International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials(5 ; 2004 ; June ; 11-16 ; Chongqing, China)
}
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    Atypical quantum confinement effect in silicon nanowires / P. B. Sorokin [et al.] // J. Phys. Chem. A. - 2008. - Vol. 112, Is. 40. - P9955-9964, DOI 10.1021/jp805069b. - Cited Reference Count: 25. - Гранты: This work was in part partially supported by a CREST (Core Research for Evolutional Science and Technology) grant in the Area of High Performance Computing for Multiscale and Multiphysics Phenomena from the Japan Science and Technology Agency (JST) as well as by Russian Fund of Basic Researches (grant 08-02-01096) (L.A.C.). P.V.A. acknowledges the encouragement of Dr. Keiji Morokuma, Research Leader at Fukui Institute for Fundamental Chemistry. The geometry of all presented structures was visualized by ChemCraft software.SUP25/SUP L.A.C. acknowledges I. V. Stankevich for help and fruitful discussions. P.B.S. is grateful to the Joint Supercomputer Center of the Russian Academy of Sciences for access to a cluster computer for quantum-chemical calculations. - Финансирующая организация: Japan Science and Technology Agency (JST); Russian Fund of Basic Researches [08-02-01096] . - OCT 9. - ISSN 1089-5639
Рубрики:
ELECTRONIC-STRUCTURE
   OPTICAL-PROPERTIES
   SI
   DENSITY
   WIRES
   EXCHANGE
   ATOMS
   DOTS
Кл.слова (ненормированные):
Electric wire -- Energy gap -- Gallium alloys -- Mathematical models -- Nanostructured materials -- Nanostructures -- Nanowires -- Quantum confinement -- Quantum electronics -- Semiconductor quantum dots -- Silicon -- Ami methods -- Band gaps -- Blue shifts -- Dinger equations -- Linear junctions -- Monotonic decreases -- Quantum confinement effects -- Quantum dots -- Semiempirical -- Silicon nanowires -- System sizes -- Theoretical models -- Nanocrystalline silicon -- nanowire -- quantum dot -- silicon -- article -- chemistry -- electron -- quantum theory -- Electrons -- Nanowires -- Quantum Dots -- Quantum Theory -- Silicon
Аннотация: The quantum confinement effect (QCE) of linear junctions of silicon icosahedral quantum dots (IQD) and pentagonal nanowires (PNW) was studied using DFT and semiempirical AM1 methods. The formation of complex IQD/PNW structures leads to the localization of the HOMO and LUMO on different parts of the system and to a pronounced blue shift of the band gap; the typical QCE with a monotonic decrease of the band gap upon the system size breaks down. A simple one-electron one-dimensional Schrodinger equation model is proposed for the description and explanation of the unconventional quantum confinement behavior of silicon IQD/PNW systems. On the basis of the theoretical models, the experimentally discovered deviations from the typical QCE for nanocrystalline silicon are explained.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
LV Kirenskii Inst Phys, SB RAS, Krasnoyarsk 660036, Russia
RAS, N M Emanuel Inst Biochem Phys, Moscow 119334, Russia
Kyoto Univ, Fukui Inst Fundamental Chem, Kyoto 6068103, Japan
Natl Inst Adv Ind Sci & Technol, Res Inst Computat Sci, Tsukuba, Ibaraki 3058568, Japan

Доп.точки доступа:
Sorokin, P. B.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Avramov, P. V.; Chernozatonskii, L.A.; Fedorov, D.G.
}
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Quantum dots embedded into silicon nanowires effectively partition electron confinement / P. V. Avramov [et al.] // J. Appl. Phys. - 2008. - Vol. 104, Is. 5. - Ст. 54305, DOI 10.1063/1.2973464. - Cited References: 22. - This work was, in part, partially supported by a Core Research for Evolutional Science and Technology (CREST) grant in the area of high performance computing for multi-scale and multiphysics phenomena from the Japan Science and Technology Agency (JST) as well as by the Russian Fund of Basic Researches (Grant No. 05-02-17443) (L.A.C.). One of the authors (P.V.A.) acknowledges the encouragement of Dr. Keiji Morokuma, Research Leader at Fukui Institute. The geometry of all presented structures was visualized by ChemCraft software. SUP23/SUP L.A.C. acknowledges I. V. Stankevich for help and fruitful discussions. P.B.S. is grateful to the Joint Supercomputer Center of the Russian Academy of Sciences for access to a cluster computer for quantum-chemical calculations. . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
OPTICAL-PROPERTIES
   POROUS SILICON
   WIRES
   PREDICTION
   GROWTH
Кл.слова (ненормированные):
Electric currents -- Electric wire -- Electronic states -- Electronic structure -- Nanostructured materials -- Nanostructures -- Nanowires -- Nonmetals -- Optical waveguides -- Plasma confinement -- Quantum confinement -- Quantum electronics -- Semiconducting silicon compounds -- Silicon -- electronic state -- Band gaps -- Electron confinements -- Electronic-structure calculations -- Embedded structures -- Quantum confinement effect -- Quantum dots -- Semi-empirical methods -- Silicon nanowires -- Silicon quantum dots -- Semiconductor quantum dots
Аннотация: Motivated by the experimental discovery of branched silicon nanowires, we performed theoretical electronic structure calculations of icosahedral silicon quantum dots embedded into pentagonal silicon nanowires. Using the semiempirical method, we studied the quantum confinement effect in the fully optimized embedded structures. It was found that (a) the band gaps of the embedded structures are closely related to the linear sizes of the longest constituting part rather than to the total linear dimension and (b) the discovered atypical quantum confinement with a plateau and a maximum can be attributed to the substantial interactions of near Fermi level electronic states of the quantum dots and nanowire segments. (c) 2008 American Institute of Physics.

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Держатели документа:
[Avramov, Pavel V.] Kyoto Univ, Fukui Inst Fundamental Chem, Kyoto 6068103, Japan
[Fedorov, Dmitri G.] Natl Inst Adv Ind Sci & Technol, Res Inst Computat Sci, Tsukuba, Ibaraki 3058568, Japan
[Sorokin, Pavel B.
Ovchinnikov, Sergei G.] LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
[Sorokin, Pavel B.
Ovchinnikov, Sergei G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Sorokin, Pavel B.
Chernozatonskii, Leonid A.] RAS, NM Emanuel Inst Biochem Phys, Moscow 119334, Russia
ИФ СО РАН
Fukui Institute for Fundamental Chemistry, Kyoto University, 34-3 Takano Nishihiraki, Sakyo, Kyoto 606-8103, Japan
Research Institute for Computational Science, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8568, Japan
L.V. Kirensky Institute of Physics, SB, RAS, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny Av., 660041 Krasnoyarsk, Russian Federation
N.M. Emanuel Institute of Biochemical Physics, RAS, 119334 Moscow, Russian Federation

Доп.точки доступа:
Avramov, P. V.; Аврамов, Павел Вениаминович; Fedorov, D. G.; Sorokin, P. B.; Chernozatonskii, L. A.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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Nesterov, A. I.
Geometric phases and quantum phase transitions in open systems / A. I. Nesterov, S. G. Ovchinnikov // Phys. Rev. E. - 2008. - Vol. 78, Is. 1. - Ст. 15202, DOI 10.1103/PhysRevE.78.015202. - Cited References: 29 . - ISSN 1539-3755

РУБ Physics, Fluids & Plasmas + Physics, Mathematical
Рубрики:
POINTS
DEGENERACIES
Кл.слова (ненормированные):
Chlorine compounds -- Electron tunneling -- Ferromagnetism -- Ising model -- Magnetic fields -- Magnetism -- Open systems -- Quantum electronics -- Quantum optics -- Sedimentation -- Effective Hamiltonian -- Eigenvalues -- First orders -- Geometric phase -- Geometric phases -- Ground-state -- Hermitian -- One-dimensional -- Open quantum systems -- Quantum phase transition -- Quantum phase transitions -- Transverse-magnetic fields -- Phase transitions
Аннотация: The relationship is established between quantum phase transitions and complex geometric phases for open quantum systems governed by a non-Hermitian effective Hamiltonian with accidental crossing of the eigenvalues. In particular, the geometric phase associated with the ground state of the one-dimensional dissipative Ising model in a transverse magnetic field is evaluated, and it is demonstrated that the related quantum phase transition is of the first order.

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Держатели документа:
[Nesterov, Alexander I.] Univ Guadalajara, CUCEI, Dept Fis, Guadalajara 44420, Jalisco, Mexico
[Ovchinnikov, S. G.] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Departamento de Fisica, CUCEI, Universidad de Guadalajara, Av. Revolucion 1500, Guadalajara, Codigo Postal 44420, Jalisco, Mexico
L. V. Kirensky Institute of Physics, SB, RAS, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 660041, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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10.

Arkhipkin, V. G.
Effect of electromagnetically induced transparency on the spectrum of defect modes in a one-dimensional photonic crystal / V. G. Arkhipkin, S. A. Myslivets // Quantum Electronics. - 2009. - Vol. 39, Is. 2. - P. 157-162, DOI 10.1070/QE2009v039n02ABEH013813 . - ISSN 1063-7818
Кл.слова (ненормированные):
Electromagnetically induced trans- parency -- Photonic crystals -- Defect layers -- Defect mode -- Electromagnetically induced trans- parency -- One dimensional photonic crystal -- Spatial in-homogeneity -- Spatial overlap -- Transmission spectrums -- Crystal atomic structure -- Defects -- Silicon on insulator technology -- Transparency -- Photonic crystals
Аннотация: We studied the transmission spectrum of a one-dimensional photonic crystal containing a defect layer in which electromagnetically induced transparency is possible. The analysis is performed taking into account the spatial inhomogeneity of interacting fields in the photonic crystal. It is found that the transmission spectrum of such a photonic crystal depends on the spatial overlap of defect modes excited by probe and control radiations. It is shown that electromagnetically induced transparency can result in a considerable narrowing of the defect mode spectrum. В© 2009 Kvantovaya Elektronika and Turpion Ltd.

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Держатели документа:
L.V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Academgorodok, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, prosp. Svobodnyi 79, 660041 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
}
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11.

Conversion of radiation in nonlinear photonic crystals of strontium tetraborate / A. S. Aleksandrovsky [et al.] // CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference = Optics InfoBase Conference Papers. - 2009, DOI 10.1109/CLEOE-EQEC.2009.5196562 . - ISBN 9781424440801 (ISBN). - ISBN 21622701

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Источник статьи
Держатели документа:
L. V. Kirensky Institute of Physics, Akademgorodok, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Slabko, V.V.; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference(2009 ; Jun. ; 14-19 ; Munich)
}
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12.

Zobov, V. E.
Selective control of the states of multilevel quantum systems using nonselective rotation operators / V. E. Zobov, V. P. Shauro // J. Exp. Theor. Phys. - 2009. - Vol. 108, Is. 1. - P. 5-17, DOI 10.1134/S1063776109010026. - Cited References: 20 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
FOURIER-TRANSFORM
SPIN
Кл.слова (ненормированные):
Quantum electronics -- Quantum optics -- Quadrupole nucleus -- Quantum systems -- Radio frequencies -- RF fields -- Rf pulse -- Selective controls -- Selective pulse -- Rotation
Аннотация: We have calculated the sequences of nonselective rotation operators separated by intervals of free evolution that perform selective rotations between adjacent levels in systems with three, four, five, and six nonequidistant levels. We have numerically simulated the realization of the calculated sequences for quadrupole nuclei with corresponding spins controlled by intense nonselective radio-frequency (RF) pulses and investigated the dependences of the realization error on the parameters of external and internal interactions. To reduce the error when the RF field is not strong enough, we have found composite nonselective RF pulses consisting of five simple ones. We show that the error of the composite selective rotation operator can be reduced signifi- cantly in comparison to the error of a simple single selective pulse.

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Держатели документа:
[Zobov, V. E.] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[Shauro, V. P.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Shauro, V. P.; Шауро, Виталий Павлович; Зобов, Владимир Евгеньевич
}
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13.

Oxyfluorides and fluorides - new solid refrigerants [Text] / I. N. Flerov, M. V. Gorev // International Meeting "Inorganic fluorides for chemistry and environment, Optics and electronics". - 2010. - P. 31

Доп.точки доступа:
Flerov, I.N.; Gorev, M.V.; "Inorganic fluorides for chemistry and environment, Optics and electronics", International Meeting (2010 ; Apr. ; 14 ; Bordeaux, France)
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14.

Dielectric properties of a mixed-valence Pb3Mn7O15 manganese oxide / N. V. Volkov [et al.] // J. Phys.: Condens. Matter. - 2010. - Vol. 22, Is. 37. - Ст. 375901, DOI 10.1088/0953-8984/22/37/375901. - Cited References: 14. - This study was supported by the Russian Foundation for Basic Research 'Siberia', project No. 09-02-98003, and the Siberian Branch of the Russian Academy of Sciences, integration project No. 101. . - ISSN 0953-8984

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
cation -- lead -- manganese derivative -- oxide -- article -- chemical model -- chemistry -- crystallization -- electric conductivity -- electronics -- methodology -- temperature -- Cations -- Crystallization -- Electric Conductivity -- Electronics -- Lead -- Manganese Compounds -- Models, Chemical -- Oxides -- Temperature -- AC electric field -- Analysis of resistivity -- Carrier hopping -- Charge ordering -- Complex dielectric constant -- Crystal site -- Debye models -- Dielectric constants -- Dielectric spectra -- Frequency windows -- Lattice sites -- Low frequency -- Manganese ions -- Mixed valence -- Mixed valence state -- Relaxation behaviors -- Temperature range -- Electric fields -- Manganese -- Manganese oxide -- Permittivity -- Single crystals -- Crystal symmetry
Аннотация: We investigated the low-frequency dielectric properties of a Pb3Mn7O15 single crystal with manganese ions in the mixed-valence state (Mn3+/Mn4+). Dielectric relaxation was found in the frequency window from 20 to 100 kHz in the temperature range 110-180 K. The dielectric spectra of the crystal were analyzed using a Debye model. Estimations made within the model and analysis of resistivity data suggest that the relaxation behavior of the dielectric constant is related to polaronic charge carrier hopping. Around 250 K, charge ordering occurs in the crystal when the Mn3+ and Mn4+ ions are arranged in a specific order among the crystal sites. With a decrease in temperature, an ac electric field can induce a charge hop between the equivalent lattice sites available, related to crystal symmetry. This hopping is equivalent to the reorientation of an electric dipole that yields Debye-type behavior of the complex dielectric constant. The observed anisotropy in the behavior of the dielectric properties and resistivity can be attributed to a pronounced two-dimensional character of the crystal structure.

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Держатели документа:
[Volkov, N. V.
Eremin, E. V.
Sablina, K. A.
Sapronova, N. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
L V Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russia.
L V Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Sablina, K. A.; Саблина, Клара Александровна; Sapronova, N. V.
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15.

Nonlinear optics of randomly structured strontium tetraborate / A. S. Aleksandrovsky, A. M. Vyunishev, A. I. Zaitsev [et al.] // CLEO/Europe-EQEC 2011 : IEEE, 2011. - P84
Аннотация: Strontium tetraborate (SBO) is attractive for nonlinear optics of short-wavelength range including VUV due to its transparency window [1]. Nonlinear coefficients of SBO are the largest among crystals transparent below 270 nm. Angular phase matching is, however, absent in SBO, and the only possibility of conversion enhancement is to employ self-organized random nonlinear photonic crystal (NPC) structures discovered in SBO. These NPC are capable of two limiting cases of phase matching, namely, nonlinear diffraction (NLD) and random quasi phase matching (RQPM). NLD allows detection of NPCs and testing their reciprocal superlattice vectors (RSV) spectra via variation of the incidence angle. NLD conversion of broadband fs pulses of modest power from Ti:S oscillator results in 1.9% efficiency, being, to our knowledge, the best result obtained for this type of phase matching. RSV spectrum is wide enough to ensure NLD tunability from 355 to 510 nm. This spectrum is not flat, but the narrowing of the generated radiation spectrum due to non-flatness is rather modest.

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A. A.; Иконников, Антон Андреевич; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Conference on Lasers and Electro-Optics Europe(2011 ; Jun. 21-25); European Quantum Electronics Conference(12 ; 2011 ; Jun. 21-25)
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16.

Laser photolysis of fluorone dyes in a chitosan matrix / E. A. Slyusareva [et al.] // Quantum Electron. - 2012. - Vol. 42, Is. 8. - P. 687-692, DOI 10.1070/QE2012v042n08ABEH014860. - Cited References: 32 . - ISSN 1063-7818

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
POLY(VINYL ALCOHOL) MATRIX
   XANTHENE DYES
   ROSE-BENGAL
   FLUORESCENCE PROPERTIES
   DELAYED FLUORESCENCE
   ORGANIC-MOLECULES
   TRIPLET-STATE
   EXCITATION
   ABSORPTION
   PHOSPHORESCENCE
Кл.слова (ненормированные):
laser photolysis -- fluorescein -- dibromofluorescein -- eosin Y -- erythrosin B -- Rose Bengal -- chitosan -- photobleaching kinetics -- two-step absorption
Аннотация: Kinetics of laser-induced photobleaching of fluorone dyes (fluorescein, dibromofluorescein, eosin Y, erythrosin B, Rose Bengal) is studied in a chitosan matrix. For all dyes the bleaching kinetics at the intensities of laser radiation 0.7 — 11.9 W cm-2 demonstrates quasi-monomolecular behaviour. The results are analysed using a kinetic model, based on the four-level (S0, S1, T1, Tn) scheme of the dye with chemically active triplet states taken into account. It is shown that the rate constants of the chemical reaction involving higher triplet states in the dyes studied amount to (3.9 — 18.6) × 106 s-1 and exceed the analogous values for the reaction involving the first lower triplet states by nine orders of magnitude. The rate of reaction involving the first triplet states appeared to be higher by one — two orders of magnitude than that in the case of higher triplet states involved because of low population of the latter. The possible mechanism of dye bleaching with participation of chitosan that consists in reduction of the dye to the leuco form by transfer of hydrogen from the chitosan matrix is discussed.

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Публикация на русском языке Лазерный фотолиз флуороновых красителей в хитозановой матрице [Текст] / Е. А. Слюсарева [и др.] // Квант. электроника : Физический институт им. П.Н.Лебедева РАН, 2012. - Т. 42 № 8. - С. 687-692

Держатели документа:
[Slyusareva, E. A.
Sizykh, A. G.
Gerasimova, M. A.
Slabko, V. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Myslivets, S. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Slyusareva, E. A.; Sizykh, A. G.; Gerasimova, M. A.; Slabko, V. V.; Слабко, Виталий Васильевич; Myslivets, S. A.; Мысливец, Сергей Александрович
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17.

    Zobov, V. E.
    Quantum and classical correlations in high temperature dynamics of two coupled large spins : conference paper / V. E. Zobov // Proc. SPIE. - 2012. - Vol.8700. - Ст. 87001D. - P. , DOI 10.1117/12.2016982. - Cited References: 17 . - ISSN 0277-786X. - ISSN 978-08194
   Перевод заглавия: Квантовые и классические корреляции в высокотемпературной динамике двух связанных больших спинов
Кл.слова (ненормированные):
Dynamical correlations -- Measurement -- Mutual information -- Nuclear magnetic resonance -- Spin coherent states
Аннотация: We study dynamical correlations of two coupled large spins depending on the time and on the spin quantum numbers. In the high-temperature approximation, we obtain analytical expressions for the mutual informations, quantum and classical parts of correlations. The latter was obtained performing the non-orthogonal projective (POVM) measurements onto the spin coherent states of two spins or one spin, as well as by means of the orthogonal projective measurement of von Neumann. Contribution from quantum correlations is much less than that from classical ones and decreasing with the increase in spin quantum numbers at short times. However, it is not so in a time equal to half of the quantum period. © 2012 SPIE.

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Доп.точки доступа:
Зобов, Владимир Евгеньевич; International Conference on Micro- and Nano-Electronics (Oct. 1-5, 2012 ; Zvenigorod, Russia)
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18.

Shauro, V. P.
On the time-optimal implementation of quantum Fourier transform for qudits represented by quadrupole nucleus : Proceedings Paper / V. P. Shauro, V. E. Zobov ; ed. V. P. Shauro ; Int. Conf. on Micro- and Nano-Electronics // Pros. SPIE. - 2012. - Vol. 8700. - Ст. 87001G, DOI 10.1117/12.2016983. - Cited References: 15 . - ISSN 0277-786X. - ISSN 978-0-819

РУБ Nanoscience & Nanotechnology + Optics
Рубрики:
ALGORITHMS
Кл.слова (ненормированные):
qudit -- quantum Fourier transform -- time-optimal control -- nuclear magnetic resonance
Аннотация: We consider the problem of time-optimal realization of the quantum Fourier transform gate for a single qudit with number of levels d from 3 to 8. As a qudit the quadrupole nucleus with spin I > 1/2 controlled by NMR is considered. We calculate the dependencies of the gate error on the duration of radio-frequency pulse obtained by numerical optimization using Krotov-based algorithm. It is shown that the dependences of minimum time of QFT gate implementation on qudit dimension are different for integer and half-integer spins.

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Доп.точки доступа:
Zobov, V. E.; Зобов, Владимир Евгеньевич; Shauro, V. P. \ed.\; Шауро, Виталий Павлович; International Conference on Micro- and Nano-Electronics (Oct. 1-5, 2012 ; Zvenigorod, Russia)
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19.

Light passage through the polymer film of liquid crystal droplets with modified boundary conditions / V. A. Loiko [et al.] // Semiconductor Physics, Quantum Electronics and Optoelectronics. - 2013. - Vol. 16, № 1. - P. 185-189. - This work was performed under the aegis of the Integration Project and supported by the Belarusian Republican Foundation for Fundamental Research, Project No. F12SO-007
Кл.слова (ненормированные):
polymer dispersed liquid crystal -- transmittance -- scattering -- light modulation
Аннотация: A method to analyze coherent transmission coefficients and the small-angle light scattering structure of PDLC layer with homogeneous and inhomogeneous boundary conditions on the droplets surface is discussed. For PDLC films with inhomogeneous boundary conditions at the polymer -- liquid crystal interface, asymmetry of the angular structure of light scattering with respect to the polar angle is revealed. Besides, experimental results on transmittance are presented.

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Держатели документа:
B.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Nezalezhnastsi ave., Minsk, 220072 Belarus
L.V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences Krasnoyarsk,660036, Russia

Доп.точки доступа:
Loiko, V. A.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Konkolovich, A. V.; Miskevich, A. A.
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20.

    Jc enhancement and flux pinning of Se substituted YBCO compound / Z. D. Yakinci [et al.] // J. Mater. Sci.: Mater. Electron. - 2013. - Vol. 24. - P. 4790–4797, DOI 10.1007/s10854-013-1476-8. - The work is supported by Project No. 7 of RAS Program ‘"Quantum physics of condensed matter" . - ISSN 0957-4522
   Перевод заглавия: Увеличение критического тока и пиннинг потока в соединении YBCO с замещением Se
Аннотация: Y2/3 Se1/3Ba2Cu3Ox compound was fabricated by using solid state fabrication technique. Optimum heat treatments conditions for Y0.77Se0.33Ba2Cu3Ox were investigated. It was determined that the XRD results of these samples were similar to Y-123 phase with some impurities. Magnetization dependence of applied magnetic fields was measured in the range of 0-9В T at 10-50В K. The symmetric and asymmetric M-H loops were obtained for the samples. Magnetization loops obtained from measurements were successfully described by the extended Valkov-Khrustalev model. The temperature and applied magnetic field dependencies of magnetization of sample were estimated and critical current density of samples was calculated by Bean model and pinning force of samples was calculated by using Lorentz force. It is found from critical current density values that Se additions were acted as a pinning center which increased critical current density. В© 2013 Springer Science+Business Media New York.

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Держатели документа:
Inonu Univ, Sagl Hizmetleri Meslek Yuksek Okulu, TR-44280 Malatya, Turkey
SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Inonu Univ, Bilimsel & Teknol Arastrma Merkezi, TR-44280 Malatya, Turkey
Inonu Univ, Fen Edebiyat Fak, Superiletkenl Arastirma Grubu, TR-44280 Malatya, Turkey

Доп.точки доступа:
Yakinci, Z. D.; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Altin, E.; Kurt, F.; Altin, S.; Demirel, S.; Aksan, M. A.; Yakinci, M. E.
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