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Arkhipkin, V. G.
Switching from normal to anomalous dispersion in photonic crystal with Raman gain defect / V. G. Arkhipkin, S. A. Myslivets // Opt. Lett. - 2014. - Vol. 39, Is. 7. - P. 1803-1806, DOI 10.1364/OL.39.001803. - Cited References: 30. - This work was supported in part by the RAS Grants No. 24.29 and No. 24.31, by SB RAS Grants No. 43, No. 101, and by NSC of Taiwan and SB RAS through a joint project. . - ISSN 0146-9592. - ISSN 1539-4794

РУБ Optics
Рубрики:
FAST LIGHT-PROPAGATION
   SLOW LIGHT
   SUPERLUMINALITY
   AMPLIFIER
   CAVITY
   SYSTEM
   DELAY
Аннотация: Propagation of a light through a one-dimensional photonic crystal containing a defect layer doped with a Raman gain medium is discussed. We demonstrate all-optically controlled switching from normal to anomalous dispersion in such a structure. A group delay for the transmitted probe (Raman) pulse is investigated. We show that the group velocity of a Raman pulse can be tuned from subluminal to superluminal by varying the intensity of the pump field. (C) 2014 Optical Society of America

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Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
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    Bulgakov, E. N.
    All-optical light storage in bound states in the continuum and release by demand / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev // Opt. Express. - 2015. - Vol. 23, Is. 17. - P. 22520-22531, DOI 10.1364/OE.23.022520. - Cited References: 45. - This work was supported by Russian Scientific Foundation through Grant 14-12-00266. We acknowledge discussions with D.N. Maksimov . - ISSN 1094-4087
   Перевод заглавия: Сохранение света в связанном состоянии в континууме и освобождение по требованию

РУБ Optics
Рубрики:
TRAPPED RAINBOW STORAGE
   COUPLED-MODE THEORY
   CRYSTAL WAVE-GUIDE
   SLOW LIGHT
   FANO RESONANCE
   METAMATERIALS
   MICROCAVITY
   CAVITIES
Аннотация: In the framework of the temporal coupled mode theory we consider bound states embedded in the continuum (BSC) of photonic crystal waveguide as a capacity for light storage. A symmetry protected BSC occurs in two off-channel microresonators positioned symmetrically relative to the waveguide. We demonstrate that the symmetry protected BSC captures a fraction of a light pulse due to the Kerr effect as the pulse passes by the microresonators. However the amount of captured light is found to be strongly sensitive to the parameters of the gaussian light pulse such as basic frequency, duration and intensity. In contrast to the above case the BSC resulted from a full destructive interference of two eigenmodes of a single microresonator accumulates a fixed amount of light dependent on the material parameters of the microresonator but independent of the light pulse. The BSCs in the Fabry-Perot resonator show similar effects. We also show that the accumulated light can be released by a secondary pulse. These phenomena pave a way for all-optical storage and release of light. (C) 2015 Optical Society of America

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Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Russian Scientific Foundation [14-12-00266]
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    Grigoriev, P. D.
    Slow in-plane magnetoresistance oscillations in multiband quasi-two-dimensional metals / P. D. Grigoriev, M. M. Korshunov, T. I. Mogilyuk // J. Supercond. Nov. Magn. - 2016. - Vol. 29, Is. 4. - P. 1127-1132, DOI 10.1007/s10948-016-3373-x. - Cited References:73. - We are grateful to V.M. Pudalov, I. A. Nekrasov, and S.G. Ovchinnikov for useful discussions. We acknowledge the partial support by RFBR (Grants 16-02-00522 and 16-02-00098) and the President Grant for Government Support of the Leading Scientific Schools of the Russian Federation (NSh-2886.2014.2). . - ISSN 1557-1939. - ISSN 1557-1947
   Перевод заглавия: Медленные внутриплоскостные осцилляции магнетосопротивления в многозонных квазидвумерных металлах

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
High-temperature superconductivity
   High magnetic-fields
   Iron-based materials
   Conductors
   Localization
   Weak
Кл.слова (ненормированные):
Fermi surface -- Quantum oscillations -- Fe-based superconductors -- Slow -- oscillations -- Magnetoresistance
Аннотация: Slow oscillations (SlO) of magnetoresistance is a convenient tool to measure electronic structure parameters in quasi-two-dimensional metals. We study the possibility to apply this method to multi-band conductors, e.g., to iron-based high-temperature superconducting materials. We show that SlO can be used to measure the interlayer transfer integral in multi-band conductors similar to single-band metals. In addition, the SlO allow to measure and compare the effective masses or the electron scattering rates in various bands.

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Держатели документа:
LD Landau Theoret Phys Inst, Chernogolovka 142432, Russia.
Inst Laue Langevin, 71 Ave Martyrs, F-38000 Grenoble, France.
Natl Univ Sci & Technol MISiS, Moscow 119049, Russia.
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
Natl Res Ctr, Kurchatov Inst, Moscow, Russia.

Доп.точки доступа:
Korshunov, M. M.; Коршунов, Максим Михайлович; Mogilyuk, T. I.; RFBR [16-02-00522, 16-02-00098]; Leading Scientific Schools of the Russian Federation [NSh-2886.2014.2]
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Arkhipkin, V. G.
Transmission and reflection spectra of a photonic crystal with a Raman defects / V. G. Arkhipkin, S. A. Myslivets // J. Exp. Theor. Phys. - 2011. - Vol. 111, Is. 6. - P. 898-906, DOI 10.1134/S1063776110120022. - Cited References: 37. - This work was supported by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. NSh-7810.2010.3), the Presidium of the Russian Academy of Sciences (project no. 27.1), the Ministry of Education and Science of the Russian Federation (state contract no. 02.740.11.0220), and the Siberian Branch, Russian Academy of Sciences (integration project no. 5). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
   SLOW-LIGHT
   NONLINEAR OPTICS
   MICROCAVITIES
   LASERS
   AMPLIFIER
   MODES
Кл.слова (ненормированные):
Group velocities -- High frequency HF -- Microwatts -- Nonlinear refractive index -- One dimensional photonic crystal -- Probe field -- Pump intensities -- Raman gain -- Raman resonances -- Reflection spectra -- Spectral position -- Three level atoms -- Transmission spectrums -- Defects -- Dispersion (waves) -- Probes -- Pumping (laser) -- Pumps -- Refractive index -- Resonance -- Photonic crystals
Аннотация: Features of Raman gain of probe radiation in three-level atoms placed in a defect of a one-dimensional photonic crystal in the presence of laser radiation (pump) at an adjacent high-frequency transition have been theoretically investigated. It has been shown that there is a pump intensity range where narrow peaks (resonances) simultaneously appear in the transmission and reflection spectra of the probe field. Beyond this region, the peak in the transmission spectrum is transformed to a narrow dip. The spectral position of these peaks is determined by the Raman resonance and the transmittance and reflectance can be larger than unity at pump intensities from several microwatts per square centimeter to several tens of milliwatts per square centimeter. The nature of narrow peaks is due to a sharp dispersion of a nonlinear refractive index near the Raman resonance; this dispersion is responsible for a strong decrease in the group velocity of probe radiation. The proposed scheme makes it possible to obtain controlled ultranarrow resonances in the transmission and reflection spectra of the photonic crystal.

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Оригинал на русском языке Спектры пропускания и отражения фотонного кристалла с рамановским дефектом [Текст] / В. Г. Архипкин, С. А. Мысливец // Журнал экспериментальной и теоретической физики. - Москва : Федеральное государственное унитарное предприятие "Академический научно-издательский, производственно-полиграфический и книгораспространительский центр Российской академии наук "Издательство "Наука", 2010. - Т. 138 № 6. - С. 1018-1027

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

Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович; Архипкин, Василий Григорьевич
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Kinetic Alfven wave instability in a Lorentzian dusty magnetoplasma / N. . Rubab [et al.] // Phys. Plasmas. - 2010. - Vol. 17, Is. 10. - Ст. 103704, DOI 10.1063/1.3491336. - Cited References: 54. - This work is funded by the Higher Education Commission of Pakistan under the HEC-Overseas scholarship program Grant No. Ref: 1-1/PM OS /Phase-II/Batch-I/Austria/2007/. Part of this work was done while N. V. Erkaev was at the Space Research Institute of the Austrian Academy of Sciences in Graz. This work is also supported due to the RFBR Grant No. 09-05-91000-ANF-a. Further support is due to the "Austrian Fonds zur Forderung der Wissenschaftlichen Forschung" under Grant No. P20145-N16. . - ISSN 1070-664X

РУБ Physics, Fluids & Plasmas
Рубрики:
MAXWELLIAN DISTRIBUTION-FUNCTIONS
   FREQUENCY ELECTROMAGNETIC-WAVES
   SOLAR-WIND
   CHARGE FLUCTUATION
   2-STREAM INSTABILITIES
   ELECTROSTATIC MODES
   SPACE PLASMAS
   ION PLASMA
   TEMPERATURE
   PROPAGATION
Кл.слова (ненормированные):
Analytical expressions -- Dispersion relations -- Distributed streaming -- Dust acoustic -- Dust particle -- Growth rate of instabilities -- Magnetized electrons -- N-waves -- Potential theory -- Slow motion -- Streaming velocity -- Theoretical approach -- Two stream instability -- Whistler waves -- Dust -- Magnetic field effects -- Plasma waves -- Stability -- Acoustic wave propagation
Аннотация: This study presents a theoretical approach to analyze the influence of kappa distributed streaming ions and magnetized electrons on the plasma wave propagation in the presence of dust by employing two-potential theory. In particular, analytical expressions under certain conditions are derived for various modes of propagation comprising of kinetic Alfven wave streaming instability, two stream instability, and dust acoustic and whistler waves. A dispersion relation for kinetic Alfven-like streaming instability has been derived. The effects of dust particles and Lorentzian index on the growth rates and the threshold streaming velocity for the excitation of the instability are examined. The streaming velocity is observed to be destabilizing for slow motion and stabilizing for fast streaming motions. It is also observed that the presence of magnetic field and superthermal particles hinders the growth rate of instability. Possible applications to various space and astrophysical situations are discussed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3491336]

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Держатели документа:
[Rubab, N.
Biernat, H. K.] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria
[Rubab, N.
Biernat, H. K.] Graz Univ, Inst Phys, A-8010 Graz, Austria
[Erkaev, N. V.] Inst Computat Modelling, Krasnoyarsk 660036, Russia
[Erkaev, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Langmayr, D.] Virtual Vehicle Competence Ctr Vif, A-8010 Graz, Austria
ИВМ СО РАН
Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria
And Institute of Physics, University of Graz, Universitatplatz 5, A-8010 Graz, Austria
Institute of Computational Modelling, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, 660041 Krasnoyarsk, Russian Federation
Virtual Vehicle Competence Center (Vif), Inffeldgasse 21a, 8010 Graz, Austria

Доп.точки доступа:
Rubab, N.; Erkaev, N. V.; Еркаев, Николай Васильевич; Langmayr, D.; Biernat, H. K.
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Single magnetic chirality in the magnetoelectric NdFe3((BO3)-B-11)(4) / M. . Janoschek [et al.] // Phys. Rev. B. - 2010. - Vol. 81, Is. 9. - Ст. 94429, DOI 10.1103/PhysRevB.81.094429. - Cited References: 55 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
NEUTRON-DIFFRACTION
   PHASE-TRANSITIONS
   SLOW-NEUTRONS
   CRYSTAL
   NDFE3(BO3)(4)
   EXTINCTION
   NUCLEAR
   ORDER
   MNSI
   ANTIFERROMAGNETS
Аннотация: We have performed an extensive study of single crystals of the magnetoelectric NdFe3 ((BO3)-B-11)(4) by means of a combination of single-crystal neutron diffraction and spherical neutron polarimetry. Our investigation did not detect significant deviations at low temperatures from space group R32 concerning the chemical structure. With respect to magnetic ordering our combined results demonstrate that in the commensurate magnetic phase below T-N approximate to 30 K all three magnetic Fe moments and the magnetic Nd moment are aligned ferromagnetically in the basal hexagonal plane but align antiferromagnetically between adjacent planes. The phase transition to the low-temperature incommensurate (IC) magnetic structure observed at T-IC approximate to 13.5 K appears to be continuous. By means of polarized neutron studies it could be shown that in the incommensurate magnetic phase the magnetic structure of NdFe3((BO3)-B-11)(4) is transformed into a long-period antiferromagnetic helix with single chirality. Close to the commensurate-incommensurate phase transition third-order harmonics were observed, which in addition indicate the formation of magnetic solitons.

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Держатели документа:
[Janoschek, M.
Fischer, P.
Schefer, J.
Roessli, B.
Pomjakushin, V.] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[Janoschek, M.
Fischer, P.
Schefer, J.
Roessli, B.
Pomjakushin, V.] ETH, CH-5232 Villigen, Switzerland
[Janoschek, M.] Tech Univ Munich, Phys Dept E21, D-85748 Garching, Germany
[Meven, M.] Tech Univ Munich, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85748 Garching, Germany
[Petricek, V.] ASCR, Vvi, Inst Phys, Prague 18221 8, Czech Republic
[Petrakovskii, G.
Bezmaternikh, L.] RAS, SB, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Laboratory for Neutron Scattering, Paul Scherrer Institut and ETH Zurich, CH-5232 Villigen PSI, Switzerland
Physik Department E21, Technische Universitat Munchen, D-85748 Garching, Germany
Department of Physics, University of California, San Diego, San Diego, CA 92093-0354, United States
Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM II), Technische Universitat Munchen, D-85748 Garching, Germany
Institute of Physics, ASCR, V.v.i, Na Slovance 2, 182 21 Praha 8, Czech Republic
Institute of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Janoschek, M.; Fischer, P.; Schefer, J.; Roessli, B.; Pomjakushin, V.; Meven, M.; Petricek, V.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
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Peculiarities of Alfven wave propagation along a nonuniform magnetic flux tube / N. V. Erkaev [et al.] // Phys. Plasmas. - 2005. - Vol. 12, Is. 1. - Ст. 12905, DOI 10.1063/1.1833392. - Cited References: 18 . - ISSN 1070-664X

РУБ Physics, Fluids & Plasmas
Рубрики:
HYDROMAGNETIC-WAVES
   TRANSFER EVENTS
   FIELD
   SLOW
Кл.слова (ненормированные):
Algebra -- Approximation theory -- Boundary conditions -- Electric conductivity -- Electric field effects -- Integral equations -- Magnetic flux -- Magnetohydrodynamics -- Perturbation techniques -- Polarization -- Vectors -- Velocity measurement -- Alfven wave propagation -- Axial symmetry -- Magnetic flux tubes -- Magnetosonic pulses -- Wave propagation
Аннотация: Within the framework of the assumption of large azimuthal wave numbers, the equations for Alfven and slow magnetosonic waves are obtained using frozen-in material coordinates. These equations are specified for the case of a nonuniform magnetic field with axial symmetry. Assuming a meridional polarization of the magnetic field and velocity perturbations, the effects of Alfven wave propagation are analyzed which are related to geometric characteristics of a nonuniform magnetic field: (a) A finite curvature radius of the magnetic field lines and (b) convergence of magnetic field lines. The interaction between the Alfven and magnetosonic waves is found to be strongly dependent on the curvature radius of the magnetic tube and the local plasma beta parameter. The electric field amplitude and the length scale of a wave front are found to increase very strongly in the course of the Alfven wave propagation along a converging magnetic flux tube. Also studied is a temporal decrease of the wave perturbations which is caused by dissipation at the conducting boundary. (C) 2005 American Institute of Physics.

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Держатели документа:
Russian Acad Sci, Inst Computat Modelling, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
St Petersburg State Univ, Inst Phys, St Petersburg 198504, Russia
Austrian Acad Sci, Inst Space Res, A-8042 Graz, Austria
ИВМ СО РАН
Intitute of Computational Modelling, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
State University of Krasnoyarsk, Krasnoyarsk 660041, Russian Federation
Institute of Physics, State University, St. Petersburg 198504, Russian Federation
Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, A-8042 Graz, Austria

Доп.точки доступа:
Erkaev, N. V.; Еркаев, Николай Васильевич; Shaidurov, V. A.; Semenov, V. S.; Langmayr, D.; Biernat, H. K.
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RYABUSHKIN, D. S.
SLOW MOLECULAR MOTIONS AND SOLID ECHO IN HYDRATE CRYSTALS / D. S. RYABUSHKIN, Y. N. MOSKVICH, N. A. SERGEEV // Phys. Lett. A. - 1987. - Vol. 121, Is. 7. - P. 357-359, DOI 10.1016/0375-9601(87)90306-9. - Cited References: 16 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary

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Scopus
Держатели документа:
ACAD SCI USSR,INST PHYS,KRASNOYARSK 660036,USSR
ИФ СО РАН
Доп.точки доступа:
MOSKVICH, Y. N.; SERGEEV, N. A.
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MOSKVICH, Y. N.
MEASUREMENT OF SLOW MOTIONS IN SOLIDS WITH STRONG DIPOLE INTERACTION USING MULTIPULSE SEQUENCE / Y. N. MOSKVICH, A. V. PONOMARENKO, V. E. ZOBOV // Phys. Lett. A. - 1984. - Vol. 105, Is. 7. - P. 380-382, DOI 10.1016/0375-9601(84)90287-1. - Cited References: 12 . - ISSN 0375-9601

РУБ Physics, Multidisciplinary

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Держатели документа:
L.V. Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
Доп.точки доступа:
PONOMARENKO, A. V.; ZOBOV, V. E.; Зобов, Владимир Евгеньевич
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10.

    Zobov, V. E.
    Nonequidistant multipulse sequence for study of slow atomic motions in solids // Proceedings of the 1st soviet-indian symposium on actual problems of magnetic resonance spectroscopy of inorganic materials. - Dushanbe, 1982. - P. 204-205. - Библиогр.: 5
   Перевод заглавия: Тезисы докладов I советско-индийского симпозиума "Актуальные проблемы магнитной резонансной спектроскопии неорганических материалов"

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

Доп.точки доступа:
Moskvich, Yu. N.; Москвич, Юрий Николаевич; Ponomarenko, A. V.; Пономаренко, Александр Валентинович; Зобов, Владимир Евгеньевич; Soviet-indian symposium on actual problems of magnetic resonance spectroscopy of inorganic materials(1 ; 1982 ; Sept. 29-Oct. 2 ; Dushanbe); Академия наук СССР; Indian national academy of sciences; Академия наук Таджикской ССР
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