Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Найдено в других БД:

Каталог книг и брошюр библиотеки ИФ СО РАН (10)

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Phonons<.>)

Общее количество найденных документов : 46
Показаны документы с 1 по 10

1-10 11-20 21-30 31-40 41-46

Photonic amplification and switching through nonlinear coupling with negative phonons / A. K. Popov [et al.] // Int. Conf. Phot. Switch., PS 2012. - 2012. - Ст. 6608287. - P. . - ISBN 9782912328618 (ISBN)
Кл.слова (ненормированные):
extraordinary stimulated Raman scattering -- negative group velocity -- nonlinear optical wave mixing -- optical phonos -- photonic components and devices
Аннотация: A family of switching photonic devices and amplifiers are proposed which mimic and utilize extraordinary coherent nonlinear-optical frequency conversion processes commonly attributed to plasmonic metamaterials. В© 2012 SEE.

Scopus

Доп.точки доступа:
Popov, A. K.; Попов, Александр Кузьмич; Myslivets, S. A.; Мысливец, Сергей Александрович; Shalaev, M. I.; Slabko, V. V.; Слабко, Виталий Васильевич; International Conference on Photonics in Switching (6 ; 2012 ; Sept ; 11-14 ; Ajaccio, France)
}
Найти похожие

Photonic devices with negative phonons: a concept, extraordinary properties and materials / A. K. Popov [et al.] // 8th International Conference on Optics-Photonics Design and Fabrication (ODF12) : Book of abstracts. - 2012. - P. 4S4-02
Аннотация: A family of readily available optical materials and photonic devices are proposed which mimic extraordinary coherent nonlinear-optical frequency conversion processes commonly attributed to plasmonic metamaterials that are very challenging to make.

Материалы конференции

Доп.точки доступа:
Popov, A. K.; Попов, Александр Кузьмич; Shalaev, M. I.; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; Национальный исследовательский университет ИТМО; Оптическое общество им. Д.С. Рождественского; Optics Design Group of Optical Society of Japan, JSAP; International Conference on Optics-Photonics Design and Fabrication (ODF12) (8 ; 2012 ; July ; 2-5 ; S.-Petersburg)
}
Найти похожие

Unidirectional amplification and shaping of optical pulses by three-wave mixing with negative phonons / A. K. Popov [et al.] // Appl. Phys. A. - 2013. - Vol. 115, Is. 2. - P. 523-529, DOI 10.1007/s00339-013-8078-4. - Cited References: 32. - This work was supported in parts by the US Air Force Office of Scientific Research under Grant No. FA950-12-1-298, by the US National Science Foundation under Grant No. ECCS-1028353, by the Presidium of the Russian Academy of Sciences under Grant No. 24-31 and by the Russian Federal Program on Science, Education and Innovation under Grant No. 14.A18.21.1942. . - ISSN 0947-8396. - ISSN 1432-0630

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
LEFT-HANDED METAMATERIALS
   2ND-HARMONIC GENERATION
   INDEX METAMATERIALS
   NONLINEAR OPTICS
   PARAMETRIC AMPLIFICATION
   COMPENSATING LOSSES
   BACKWARD WAVES
   OSCILLATOR
   CRYSTALS
Аннотация: A possibility to greatly enhance frequency-conversion efficiency of stimulated Raman scattering is shown by making use of extraordinary properties of three-wave mixing of ordinary and backward waves. Such processes are commonly attributed to negative-index plasmonic metamaterials. This work demonstrates the possibility to replace such metamaterials that are very challenging to engineer by readily available crystals which support elastic waves with contra-directed phase and group velocities. The main goal of this work was to investigate specific properties of indicated nonlinear optical process in short-pulse regime and to show that it enables elimination of fundamental detrimental effect of fast damping of optical phonons on the process concerned. Among the applications is the possibility of creation of a family of unique photonic devices such as unidirectional Raman amplifiers and femtosecond pulse shapers with greatly improved operational properties.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Univ Wisconsin, Stevens Point, WI 54481 USA
Purdue Univ, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Popov, A. K.; Попов, Александр Кузьмич; Shalaev, M. I.; Шалаев, Михаил Игоревич; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; US Air Force Office of Scientific Research [FA950-12-1-298]; US National Science Foundation [ECCS-1028353]; Presidium of the Russian Academy of Sciences [24-31]; Russian Federal Program on Science, Education and Innovation [14.A18.21.1942]
}
Найти похожие

Nonlinear optics with backward waves: Extraordinary features, materials and applications [] / A. K. Popov [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2014. - Vol. 213: Physics and Technology of Nanostructured Materials II. - P. 222-225, DOI 10.4028/www.scientific.net/SSP.213.222 . - ISSN 1662-9779. - ISSN 9783-0378
Кл.слова (ненормированные):
Backward waves -- Negative group velocity -- Negative-index metamaterials -- Nonlinear optical frequency mixing -- Optical phonons -- Spatial dispersion
Аннотация: Extraordinary properties of nonlinear-optical propagation processes are investigated that involve electromagnetic or elastic waves with negative group velocity. Nanostructured materials that support such waves and prospective unique photonic devices are described. В© (2014) Trans Tech Publications, Switzerland.

Scopus,
Смотреть статью

Доп.точки доступа:
Galkin, N. \ed.\; Popov, A. K.; Slabko, V. V.; Слабко, Виталий Васильевич; Shalaev, M. I.; Nefedov, I. S.; Myslivets, S. A.; Мысливец, Сергей Александрович; Asian School-Conference on Physics and Technology of Nanostructured Materials(2 ; 2013 ; Aug. ; 20-27 ; Vladivostok); Азиатская школа-конференция по физике и технологии наноструктурированных материалов(2 ; 2013 ; авг. ; 20-27 ; Владивосток)
}
Найти похожие

Prokert, F.
Neutron scattering studies on phase transition and phonon dispersion in Cs//2NaBiCl//6 / F. Prokert, K. S. Aleksandrov // Phys Status Solidi B. - 1984. - Vol. 124, Is. 2. - P. 503-513, DOI 10.1002/pssb.2221240208. - Cited References: 24 . - ISSN 0370-1972
Кл.слова (ненормированные):
NEUTRONS - Scattering -- PHONONS -- PHASE TRANSITION -- PHONON DISPERSION -- CESIUM COMPOUNDS
Аннотация: The structural phase transition (PT) of elpasolite-type crystal Cs//2NaBiCl//6 is investigated by neutron scattering. At first the acoustic phonon dispersion is measured at room temperature for the high-symmetric directions DELTA , SIGMA , and LAMBDA of the Brillouin zone. The transverse rotary mode is studied for phonon wave vectors q parallel as well as perpendicular to DELTA and the dispersion shows a quasi-two-dimensional behavior of the Cl-octahedra rotation. At cooling down to the PT, this branch shows a softening along DELTA , reaching the lowest energies at the zone center. The PT, which is found to be of weakly first order, seems to be driven and triggered by the ferrorotative octahedra mode.

Scopus,
WOS
Держатели документа:
LV Kirensky Phys Inst,Krasnoyarsk 660036,,USSR
ИФ СО РАН

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
Найти похожие

Coupling of Hubbard fermions with phonons in La2 CuO4: A combined study using density-functional theory and the generalized tight-binding method / E. I. Shneyder [et al.] // J. Alloys Compd. - 2015. - Vol. 648. - P. 258-264, DOI 10.1016/j.jallcom.2015.05.150. - Cited References: 60. - We acknowledge the stimulating discussions with V.V. Val'kov, D.M. Dzebisashvilly, M.M. Korshunov and I.S. Sandalov. E.I.S. and S.G.O. are thankful to the Russian Science Foundation (project No. 14-12-00061) for the support of the research given in Sections 2, 6 and 7. E.E.K. and I.A.N. are thankful to the State Contract No. 0389-2014-0001 and RFBR grant No. 14-02-00065 for the support of the research given in Section 5. Financial support of the research given in Sections 3 and 4 by the Austrian Federal Government (in particular from Bundesministerium fur Verkehr, Innovation und Technologie and Bundesministerium fur Wissenschaft, Forschung und Wirtschaft) represented by Osterreichische Forschungsforderungsgesellschaft mbH and the Styrian and the Tyrolean Provincial Government, represented by Steirische Wirtschaftsforderungsgesellschaft mbH and Standortagentur Tirol, within the framework of the COMET Funding Programme is gratefully acknowledged by C.D. and J.S. . - ISSN 0925-8388

РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering
Рубрики:
MEAN-FIELD THEORY
   LINEAR-RESPONSE THEORY
   CUPRATE SUPERCONDUCTORS
   ELECTRONIC-STRUCTURE
   CORRELATED SYSTEMS
   LATTICE-DYNAMICS
   BAND-STRUCTURE
   LA2CUO4
   MODEL
   LA2-XSRXCUO4
Кл.слова (ненормированные):
High-temperature superconductivity -- Electron-phonon coupling -- Density-functional theory -- Generalized tight-binding approach
Аннотация: We present results for the electron-phonon interaction of the Γ-point phonons in the tetragonal high-temperature phase of La2 CuO4 obtained from a hybrid scheme, combining density-functional theory (DFT) with the generalized tight-binding approach. As a starting point, eigenfrequencies and eigenvectors for the Γ-point phonons are determined from DFT within the frozen phonon approach utilizing the augmented plane wave + local orbitals method. The so obtained characteristics of electron-phonon coupling are converted into parameters of the generalized tight-binding method. This approach is a version of cluster perturbation theory and takes the strong on-site electron correlations into account. The obtained parameters describe the interaction of phonons with Hubbard fermions which form quasiparticle bands in strongly correlated electron systems. As a result, it is found that the Γ-point phonons with the strongest electron-phonon interaction are the A2u modes (236 cm-1, 131 cm-1 and 476 cm-1). Finally it is shown, that the single-electron spectral-weight redistribution between different Hubbard fermion quasiparticles results in a suppression of electron-phonon interaction which is strongest for the triplet Hubbard band with z oriented copper and oxygen electrons. © 2015 Elsevier B.V. All rights reserved.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics SB RAS, Akademgorodok 50, Bld. 38, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Materials Center Leoben Forschung GmbH, Rosegger-Stra?e 18, Leoben, Austria
Institute of Electrophysics UB RAS, Amundsena Str. 106, Yekaterinburg, Russian Federation
Physics Department and IRIS Adlershof, Humboldt-Universita¨t zu Berlin, Zum Großen Windkanal 6, Berlin, Germany

Доп.точки доступа:
Shneyder, E. I.; Шнейдер, Елена Игоревна; Spitaler, J.; Kokorina, E. E.; Nekrasov, I. A.; Gavrichkov, V. A.; Гавричков, Владимир Александрович; Draxl, C.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
Найти похожие

Unidirectional Amplification and Shaping of Optical Pulses by Three-Wave Mixing with Negative Phonons / A. K. Popov [и др.] // The 4th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META’13) : Proceedings. - 2013. - P. 35-40. - Библиогр.: 30 назв.
Аннотация: A possibility to greatly enhance frequency-conversion efficiency of stimulated Raman scattering is shown by making use of extraordinary properties of three-wave mixing of ordinary and backward waves. Such processes are commonly attributed to negative-index plasmonic metamaterials. This work demonstrates the possibility to replace such metamaterials that are very challenging to engineer by readily available crystals which support elastic waves with contradirected phase and group velocities. The main goal of this work is to investigate specific properties of indicated nonlinear optical process in short pulse regime and to show that it enables elimination of fundamental detrimental effect of fast damping of optical phonons on the process concerned. Among the applications is the possibility of creation of a family of unique photonic devices such as unidirectional Raman amplifiers and femtosecond pulse shapers with greatly improved operational properties.

Материалы конференции,
Материалы конференции

Доп.точки доступа:
Popov, A. K.; Shalaev, M. I.; Шалаев, Михаил Игоревич; Myslivets, S. A.; Мысливец, Сергей Александрович; Slabko, V. V.; Слабко, Виталий Васильевич; International Conference on Metamaterials, Photonic Crystals and Plasmonics(4 ; 2013 ; March ; 18-22 ; Sharjah, United Arab Emirates)
}
Найти похожие

Raman Scattering Study Temperature Phase Transitions of Rb2KInF6 Crystal / A. S. Krylov [et al.] // Ferroelectrics. - 2011. - Vol. 416. - P. 95-100, DOI 10.1080/00150193.2011.577713. - Cited References: 9. - Authors wish to thank prof. K. S. Aleksandrov and prof. I. N. Flerov for their valuable support and useful discussions. This work has been financially supported by grants RFFBR 08-02-00066, 09-02-00062, SS-1011.2008.2. . - ISSN 0015-0193

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
LIGHT-SCATTERING
   LATTICE-DYNAMICS
   OPTICAL PHONONS
   ELPASOLITE
   RB2KSCF6
Кл.слова (ненормированные):
Rb2KInF6 -- temperature phase transitions -- Raman scattering -- lattice dynamics
Аннотация: Raman scattering spectra of Rb2KInF6 crystal have been studied in a wide temperature range, including two phase transitions: from cubic to tetragonal, and then - to the monoclinic phase. Hardening of soft phonon modes was observed that attributes them to the transitions of displacive type. Parameters of Raman lines have been quantitatively analyzed and found in good agreement with known thermodynamic characteristics of these transitions. No evidences of order - disorder processes were observed in the Raman spectra of the high-symmetry phase.

WOS,
Читать в сети ИФ
Держатели документа:
[Krylov, A. S.
Krylova, S. N.
Vtyurin, A. N.
Voronov, V. N.
Oreshonkov, A. S.] Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Voronov, V. N.; Воронов, Владимир Николаевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич
}
Найти похожие

Raman spectra and phase transitions in the Rb2KScF6 elpasolite / A. S. Krylov [et al.] // Ferroelectrics. - 2003. - Vol. 284. - P. 221-238, DOI 10.1080/00150190390204709. - Cited References: 13 . - ISSN 0015-0193

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
LIGHT-SCATTERING
OPTICAL PHONONS
MODE
Кл.слова (ненормированные):
Rb2KScF6 -- phase transitions -- Raman scattering -- soft modes
Аннотация: Raman spectra of Rb2KScF6 elpasolite crystal have been studied in a wide temperature range, including two transition points: from cubic to tetragonal, and then-to the monoclinic phase. For the first time both for this crystal and for fluoride elpasolites in general soft modes restoration has been found below transition points; in agreement with selection rules a splitting of degenerate modes has been observed as well both for lattice vibrations and internal modes of ScF6 octahedrons. Parameters of Raman lines have been quantitatively analyzed and found in good agreement with known thermodynamic characteristics of these transitions; in particular, lines widths are shown to be determined by tree-phonons anharmonic interactions. A wide region of pretransitional fluctuations was found above the upper transition point.

WOS,
Смотреть статью,
Читать в сети ИФ

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Vtyurin, A. N.; Втюрин, Александр Николаевич; Bulou, A.; Voronov, V. N.; Воронов, Владимир Николаевич; Russian-CIS-Baltic-Japanese symposium on ferroelectricity(7 ; 2002 ; Jun ; 24-28 ; St.-Petersburg)
}
Найти похожие

10.

    Рогинский, Е. М.
    Неэмпирические подходы при изучении фазовых переходов и барическое поведение фононов в молекулярных кристаллах / Е. М. Рогинский, А. С. Крылов, Ю. Ф. Марков // Наноматер. и нанострукт. - XXI век. - 2015. - Т. 6, № 2. - С. 21-27. - Библиогр.: 12 . - ISSN 2225-0999
   Перевод заглавия: Ab initio approaches used by phase transition study and phonons pressure behaviour in molecular crystals
Кл.слова (ненормированные):
ab initio -- фононы -- сегнетоэластики -- фазовые переходы -- раман-спектроскопия -- динамика решетки -- phonon -- ferroelastics -- phase transition -- Raman spectra -- lattice dynamics
Аннотация: При изучении барического поведения фононного спектра кристаллов Hg2Cl2 были предсказаны теоретически и обнаружены экспериментально в низкосимметричной, ромбической фазе мягкие моды из различных высокосимметричных точек зоны Бриллюэна (ЗБ), частоты которых уменьшается при повышении давления. В раман спектрах наблюдается мягкий фонон, который смягчается вплоть до критического давления c = 9,2 ГПа, выше которого полностью исчезает, что свидетельствует в пользу второго структурного фазового перехода, обнаруженного в настоящей работе, в кристаллах Hg2Cl2. Показано, что в случае молекулярных или квазимолекулярных кристаллов для корректного описания электронной структуры важно учитывать дисперсионные дальнодействующие поправки функционала зарядовой плотности.
Under the study of phonon spectra pressure behaviour of Hg2Cl2 crystals the soft modes at the set of high-symmetry Brillouin zone(BZ) points was predicted theoretically and observed experimentally. The frequency of soft modes reduces under pressure. In the raman spectra soft mode at the center of BZ was observed and studied. The frequency of soft mode decrease at the hydrostatic pressure up to P c = 9.2 GPa and disappears at higher pressure in spectra. Such changes in spectra points to the existence of the second phase transition observed in the present work. It was shown that in the case of molecular crystals the long-range dispersion corrections of the electron density functional is required for a proper electronic structure description.

Смотреть статью,
РИНЦ
Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Крылов, Александр Сергеевич; Krylov, A. S.; Марков, Ю. Ф.; Markov Yu. F; Roginskii E. M.
}
Найти похожие