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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : KIM P. D., HVAN D. C.
Заглавие : CONSTRAINED OSCILLATION OF THE MAGNETIC DOMAIN-WALL ON HIGH-FREQUENCIES
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1982. - Vol. 24, Is. 8. - P2300-2304. - ISSN 0367-3294
Примечания : Cited References: 8
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : KHVAN D. C., KIM P. D.
Заглавие : ASYMMETRIC HIGH-FREQUENCY DOMAIN-WALL OSCILLATION
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1990. - Vol. 32, Is. 9. - P2549-2553. - ISSN 0367-3294
Примечания : Cited References: 4
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gluck M., Kolovsky A. R., Korsch H. J.
Заглавие : A quantum cable car for Wannier-Stark ladders
Место публикации : Phys. Lett. A. - 2000. - Vol. 276, Is. 1-4. - P.167-174. - ISSN 0375-9601, DOI 10.1016/S0375-9601(00)00656-3
Примечания : Cited References: 13
Предметные рубрики: DYNAMIC LOCALIZATION
BLOCH PARTICLE
AC FIELDS
DC
STATES
STATISTICS
LIFETIME
Ключевые слова (''Своб.индексиров.''): wannier-stark ladder--induced transitions--induced transitions--wannier-stark ladder--article--energy--oscillation--quantum mechanics--time--transport kinetics
Аннотация: This Letter studies the dynamics of transitions between the levels of a Wannier-Stark ladder induced by a resonant periodic driving. The analysis of the problem is done in terms of resonance quasienergy states, which take into account the metastable character of the Wannier-Stark states. It is shown that the periodic driving creates from a localized Wannier-Stark state an extended Bloch-like state with a spatial length varying in time as similar to t(1/2). Such a state can find applications in the field of atomic optics because it generates a coherent pulsed atomic beam. (C) 2000 Elsevier Science B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Великанов, Дмитрий Анатольевич, Юркин, Глеб Юрьевич, Патрин Г.С.
Заглавие : Стабилизация параметров механических колебаний образца в вибрационном магнитометре
Место публикации : Научное приборостроение. - Санкт-Петербург: Наука, 2008. - Т. 18, № 3. - С. 86-94. - ISSN 0868-5886. - ISSN 2312-2951(eissn)
УДК : 621.317.444
Предметные рубрики:
Аннотация: Предложена схема и описано устройство стабилизации параметров механических колебаний образца для высокотемпературного вибрационного магнитометра, в котором применен прямой метод измерений. Применение данного устройства позволяет существенно уменьшить погрешность измерений. Относительная нестабильность амплитуды колебаний составляет 10-4, а частоты - 10-5. Экспериментальная установка предназначена для проведения измерений магнитного момента образцов от 5•10-4 до 50 Гс•см3 в интервале температур 300-1000 К и магнитных полей 0-(±15) кЭ.Scheme and structure of sample mechanical oscillation parameters stabilization for high temperature vibrating magnetometer in which direct measuring method is used is described. This device allows to reduce significantly error of measuring. The relative instability of vibration amplitude makes 10-4, and frequencies - 10-5. The experimental apparatus is intended for measuring of magnet moment of samples from 5•10-4 to 50 gs•cm3 in the range of temperatures 300-1000 K and magnetic fields 0-(±15) kOe.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Korovushkin M. M.
Заглавие : Renormalization of Energy Structure and Oscillation Period in the de Haas-van Alphen Effect at the Strong Intersite Coulomb Interaction
Разночтения заглавия :авие SCOPUS: Renormalization of energy structure and oscillation period in the de Haas-van Alphen effect at the strong intersite Coulomb interaction
Место публикации : J. Phys. Soc. Jpn.: PHYSICAL SOC JAPAN, 2011. - Vol. 80, Is. 1. - Ст.14703. - С. P. - ISSN 0031-9015, DOI 10.1143/JPSJ.80.014703
Примечания : Cited References: 36. - This study was supported by the program "Quantum Physics of Condensed Matter'' of the Presidium of the Russian Academy of Sciences (RAS), the Russian Foundation for Basic Research (project No. 10-02-00251), the Federal goal-oriented program Scientific Brainpower of the Russian Innovations 2009-2013, and the Siberian Division of RAS (Interdisciplinary Integration project No. 53). One of the authors (M. K.) would like to acknowledge the support of the Lavrentiev's Competition of the Siberian Division of RAS. The authors are grateful to the Physical Society of Japan for financial support in publication.
Предметные рубрики: T-C SUPERCONDUCTOR
EXTENDED HUBBARD-MODEL
CUPRATE SUPERCONDUCTORS
ELECTRON CORRELATIONS
QUANTUM OSCILLATIONS
FERMI-SURFACE
OXIDES
TEMPERATURE
STATE
BANDS
Ключевые слова (''Своб.индексиров.''): strongly correlated electron systems--cuprate superconductors--intersite coulomb interaction--t-v model--de haas-van alphen effect--cuprate superconductors--de haas-van alphen effect--intersite coulomb interaction--strongly correlated electron systems--t-v model
Аннотация: The effect of strong intersite Coulomb correlations on the formation of the electron structure of the t-V model has been studied. A qualitatively new result indicating the occurrence of a split-off band of Fermi states has been obtained. The spectral intensity of this band increases with an increase in doping level and is determined by the mean-square fluctuation of occupation numbers. This results in the transformation of the energy structure and the integrated density of states and in a further decrease in state occupation in the quasimomentum space near the Fermi level as compared with Hubbard renormalization. It has been shown that this effect leads to an increase in the area of the quasimomentum space part limited by the Fermi contour and is important for the analysis of the de Haas-van Alphen oscillations in cuprate superconductors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Izotov A.V., Belyaev B. A.
Заглавие : A METHOD FOR COMPUTING THE MICROWAVE ABSORPTION SPECTRUM IN A DISCRETE MODEL OF A FERROMAGNETIC
Место публикации : Russ. Phys. J. - NEW YORK: SPRINGER, 2011. - Vol. 53, Is. 9. - С. 900-905. - FEB. - ISSN 1064-8887, DOI 10.1007/s11182-011-9508-4
Примечания : Cited Reference Count: 8. - Гранты: The work was supported in part by the Federal Purpose-Oriented Program "Scientific and Scientific-Pedagogical Staff of the Innovative Russia" for the years 2009-2013, RAS Presidium Project No. 27, and by the State Contract No. 02.740.11.0568.Финансирующая организация: Federal Purpose-Oriented Program; RAS Presidium [27]; State Contract [02.740.11.0568]
Предметные рубрики:
Ключевые слова (''Своб.индексиров.''): magnetization oscillation--landau-lifshitz equation--absorption spectrum--absorption spectrum--landau-lifshitz equation--magnetization oscillation
Аннотация: An effective method based on linearization of the Landau-Lifshitz equation has been developed to determine normal magnetization oscillation modes in a discrete model of a condensed medium. The possibility to calculate microwave absorption spectra for ferromagnetic specimens of any shape is shown.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tyurnev V. V., Serzhantov A. M.
Заглавие : Dual-mode split microstrip resonator for compact narrowband bandpass filters
Место публикации : Prog. Electromagn. Res. C. - 2011. - Vol. 23. - С. 151-160. - ISSN 19378718 (ISSN), DOI 10.2528/PIERC11062104
Ключевые слова (''Своб.индексиров.''): 1-d models--average frequency--dual modes--dual-mode filter--microstrip resonator--narrow bands--oscillation mode--pass bands--structure parameter--transmission zeros--bandpass filters--frequency response--natural frequencies--resonators--microstrip filters
Аннотация: A straight split dual-mode microstrip resonator is proposed. The frequencies of the two first oscillation modes in the resonator may be brought closer together by adjusting a split parameter whereas the frequency of the third mode remains approximately equal to the doubled average frequency of the first and the second modes. It is shown that formulas derived within 1D model give qualitatively true relations between the resonant frequencies and the structure parameters of the resonator. Examples of narrowband bandpass filters of the fourth and the sixth order are described. Transmission zeros below and above the passband substantially improve the filter's performance. The simulated frequency response of the three-resonator dual-mode filter is compared with the measured response of the fabricated filter.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Leksikov A. A., Tyurnev V. V., Serzhantov A. M.
Заглавие : Highly selective suspended stripline dual-mode filter
Место публикации : Prog. Electromagn. Res. Lett. - 2011. - Vol. 25. - С. 57-66. - ISSN 19376480 (ISSN)
Ключевые слова (''Своб.индексиров.''): band pass--dual modes--dual-mode filter--filter construction--filter performance--fourth-order--low insertion loss--narrow band filter--oscillation mode--pass bands--second orders--special structure--suspended stripline--transmission zeros--wide upper stopband--frequency response--resonators--strip telecommunication lines--bandpass filters
Аннотация: Miniature bandpass filter constructions based on a novel dual-mode suspended stripline resonator are proposed. Because of a special structure of the resonator, the frequencies of two first oscillation modes may be brought closer together. That allows realizing narrowband filters with the wide upper stopband. The filters have low insertion loss in the passband at small dimensions. Several transmission zeros substantially improve the filter performance. The derived coupling coeffcients account for some features in the frequency response of the filter. The second-order and fourth-order filters with transmission zeros have been fabricated and measured.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Izotov A. V., Belyaev B. A.
Заглавие : A METHOD FOR COMPUTING THE MICROWAVE ABSORPTION SPECTRUM IN A DISCRETE MODEL OF A FERROMAGNETIC
Место публикации : Russ. Phys. J.: SPRINGER, 2011. - Vol. 53, Is. 9. - P900-905. - ISSN 1064-8887, DOI 10.1007/s11182-011-9508-4
Примечания : Cited References: 8. - The work was supported in part by the Federal Purpose-Oriented Program "Scientific and Scientific-Pedagogical Staff of the Innovative Russia" for the years 2009-2013, RAS Presidium Project No. 27, and by the State Contract No. 02.740.11.0568.
Предметные рубрики: MAGNETIZATION
Ключевые слова (''Своб.индексиров.''): magnetization oscillation--landau-lifshitz equation--absorption spectrum--absorption spectrum--landau-lifshitz equation--magnetization oscillation
Аннотация: An effective method based on linearization of the Landau-Lifshitz equation has been developed to determine normal magnetization oscillation modes in a discrete model of a condensed medium. The possibility to calculate microwave absorption spectra for ferromagnetic specimens of any shape is shown.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kim P. D., Yu S. C., Patrin G. S., Song Y. Y., Turpanov I. A., Khalyapin D. L., Marushchenko D. A.
Заглавие : Effect of the nonmagnetic layer in a Co/Cu/CoO trilayer structure on the exchange coupling in it
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 4. - P612-616. - ISSN 1063-7761, DOI 10.1134/S1063776111030058
Примечания : Cited References: 21
Предметные рубрики: SPACER LAYER
BIAS
ANISOTROPY
Ключевые слова (''Своб.индексиров.''): cobalt layers--copper layer--exchange bias--interlayer exchange coupling--nonmagnetic layers--oscillation amplitude--temperature dependence--temperature range--trilayer film--trilayer structure--cobalt--crystal structure--epitaxial films--hysteresis--hysteresis loops--magnetic materials--exchange coupling
Аннотация: The dependence of the exchange bias of epitaxial single-crystal Co/Cu/CoO trilayer films on the copper layer thickness and temperature is studied. The exchange bias of the hysteresis loops of the ferromagnetic cobalt layer as a function of the copper layer thickness is found to have a well-pronounced oscillating character. The oscillations manifest themselves over the entire temperature range in which an exchange bias takes place (77-220 K). The complex variation of the oscillation amplitude with the nonmagnetic layer thickness can be explained by the superposition of two interlayer exchange coupling oscillation periods (lambda(1) a parts per thousand 10-11 , lambda(2) a parts per thousand 20 ) having differentamplitudes and temperature dependences.
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