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 (21)

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>A=SANDALOV, I. S.$<.>)

Общее количество найденных документов : 51
Показаны документы с 1 по 10

1-10 11-20 21-30 31-40 41-51 51-51

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sandalov I. S., Zamkova N. G., Zhandun V. S., Tarasov I. A., Varnakov S. N., Yakovlev I. A., Solovyov L. A., Ovchinnikov S. G.
Заглавие : Effect of electron correlations on the Fe3Si and α- FeSi2 band structure and optical properties
Коллективы : Russian Fund of Basic Research [14002-00186, 13-02-01265]; President of Russia Grants [2886.2014.2, 924.2014.2]
Место публикации : Phys. Rev. B: American Physical Society, 2015. - Vol. 92, Is. 20. - Ст.205129. - ISSN 1098-0121, DOI 10.1103/PhysRevB.92.205129. - ISSN 1550-235X(eISSN)
Примечания : Cited References:69. - The theoretical part of this work was supported by Russian Fund of Basic Research, Grant No. 14002-00186 and the President of Russia Grants No. 2886.2014.2 and No. 924.2014.2 for support of Leading Scientific School. The calculations were performed with the computer resources of NRC "Kurchatov Institute" (ui2.computing.kiae.ru). The experimental work was supported by Russian Fund of Basic Research, Grant No. 13-02-01265. I.S. thanks A. Ruban for useful discussion.
Предметные рубрики: DENSITY-FUNCTIONAL THEORY
TOTAL-ENERGY CALCULATIONS
AUGMENTED-WAVE METHOD
BASIS-SET
METALS
ABSORPTION
EMISSION
SURFACES
ALLOYS
LAYERS
Аннотация: We use the Vienna ab initio simulation package (vasp) for evaluation of the quasiparticle spectra and their spectral weights within Hedin's GW approximation (GWA) for Fe3Si and α-FeSi2 within the non-self-consistent one-shot approximation G0W0 and self-consistent scGWA with the vertex corrections in the particle-hole channel, taken in the form of two-point kernel. As input for G0W0, the band structure and wave functions evaluated within the generalized gradient corrected local-density approximation to density functional theory (GGA) have been used. The spectral weights of quasiparticles in these compounds deviate from unity everywhere and show nonmonotonic behavior in those parts of bands where the delocalized states contribute to their formation. The G0W0 and scGWA spectral weights are the same within 2%–5%. The scGWA shows a general tendency to return G0W0 bands to their GGA positions for the delocalized states, while in the flat bands it flattens even more. Variable angle spectroscopic ellipsometry measurements at T=296 K on grown single-crystalline ∼50-nm-thick films of Fe3Si on n-Si(111) wafer have been performed in the interval of energies ω∼(1.3–5) eV. The comparison of G0W0 and scGW theory with experimental real and imaginary parts of permittivity, refractive index, extinction and absorption coefficients, reflectivity, and electron energy loss function shows that both G0W0 and scGW qualitatively describe experiment correctly, the position of the low-energy peaks is described better by the scGW theory, however, its detailed structure is not observed in the experimental curves. We suggest that the angle-resolved photoemission spectroscopy experiments, which can reveal the fine details of the quasiparticle band structure and spectral weights, could help to understand (i) if the scGWA with this type of vertex correction is sufficiently good for description of these iron silicides and, possibly, (ii) why some features of calculated permittivity are not seen in optical experiments.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zamkova N. G., Zhandun V. S., Ovchinnikov S. G., Sandalov I. S.
Заглавие : Effect of local environment on moment formation in iron silicides
Место публикации : J. Alloys Compd.: Elsevier, 2017. - Vol. 695. - P.1213-1222. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2016.10.248
Примечания : Cited References: 40. - This work was supported by the Grants of Russian Foundation for Basic Research № 14-02-00186, № 17-02-00161 and by the Grants of Russian Foundation for Basic Research and Government of Krasnoyarsk Territory № 16-42-243035, 16-42-242036. The authors would like to thank AS Shinkorenko for the technical support.
Ключевые слова (''Своб.индексиров.''): ab initio calculations--iron silicides--magnetic properties--multiorbital model--spin-crossover
Аннотация: he effect of local environment on the formation of magnetic moments on Fe atoms in iron silicides is studied by combination of ab initio and model calculations. The suggested model includes all Fe d- and Si p-orbitals, intra-atomic Coulomb interactions, inter-atomic Fe-Fe exchange and hopping of electrons to nearest and next nearest neighboring atoms. The parameters of the model are found from the requirement that self-consistent moments on atoms and density of states found from ab initio and model calculations within the Hartree-Fock approximation are close to each other as much as possible. Contrary to the commonly accepted statement that in the ordered Fe3Si and FexSi1−x alloys an increase of the Si concentration within nearest environment of Fe atoms results in a decrease of Fe magnetic moment we find that a crucial role in the formation of magnetic moments is played by the second coordination sphere of Fe atoms. Particularly, the Fe atoms have higher magnetic moments in amorphous films compared to the epitaxial ones due to decreasing the number of iron-atoms in the next nearest environment. Both our model and ab initio calculations confirm existence of known spin crossover with pressure and predict second crossover at higher pressure.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ovchinnikov S. G., Zhandun V. S., Zamkova N. G., Maximova O. A., Lyashchenko S. A., Vysotin M. A., Sandalov I. S.
Заглавие : Electronic structure and magnetic properties of iron silicides
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов
Место публикации : The Fifth Asian School-Conference on Physics and Technology of Nanostructured Materials: Proceedings. - VLadivostok: Dalnauka Publishing, 2020. - Ст.PS.03.04i. - P.26. - ISBN 978-5-8044-1698-1
Материалы конференции,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fransson J., Eriksson O., Sandalov I. S.
Заглавие : Effects of nonorthogonality in the time-dependent current through tunnel junctions
Место публикации : Phys. Rev. B: AMERICAN PHYSICAL SOC, 2001. - Vol. 64, Is. 15. - Ст.153403. - ISSN 0163-1829, DOI 10.1103/PhysRevB.64.153403
Примечания : Cited References: 20
Предметные рубрики: LOCAL OXIDATION
TRANSPORT
DEVICES
Аннотация: A theoretical technique which allows one to include contributions from nonorthogonality of the electron states in the leads connected to a tunneling junction is derived. The theory is applied to a single-barrier, tunneling structure and a simple expression for the time-dependent tunneling current is derived showing explicit dependence of the overlap. The overlap proves to be necessary for a better quantitative description of the tunneling current, and our theory reproduces experimental results substantially better compared to standard approaches.
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhandun V. S., Zamkova N. G., Korzhavyi, Pavel, Sandalov I. S.
Заглавие : Inducing magnetism in non-magnetic α-FeSi2 by distortions and/or intercalations
Коллективы : Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [17-42-240212, 18-42-243019]
Место публикации : Phys. Chem. Chem. Phys. - 2019. - Vol. 21, Is. 25. - P.13835-13846. - ISSN 1463-9076, DOI 10.1039/c9cp02361e. - ISSN 1463-9084(eISSN)
Примечания : Cited References: 27. - The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects No 17-42-240212: "Quantum-mechanical simulation of the physical properties of correlated electron materials to improve their functional characteristics" and No 18-42-243019: "First-principles studies of the polarization, magnetic, electronic, and magnetoelectric properties of functional compounds with a spinel structure containing 3d and 4f ions".
Предметные рубрики: TOTAL-ENERGY CALCULATIONS
WAVE
FeSi2
Аннотация: By means of hybrid ab initio + model approach we show that the lattice distortions in non-magnetic α-FeSi2 can induce a magnetic state. However, we find that the distortions required for the appearance of magnetism in non-magnetic α-FeSi2 are too large to be achieved by experimental fabrication of thin films. For this reason we suggest a novel way to introduce magnetism in α-FeSi2 using “chemical pressure” that is, intercalating the α-FeSi2 films by light elements. Theoretical study of the distortions resulting from intercalation reveals that the most efficient intercalants for formation of magnetism and a high spin polarization are lithium, phosphorus and oxygen. Investigation of the dependency of the magnetic moments and spin polarisation on the intercalation atoms concentration shows that the spin polarization remains high even at small concentrations of intercalated atoms, which is extremely important for modern silicate technology.
Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Найти похожие

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.].
Материалы конференции
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzmin E. V., Ovchinnikov S. G., Sandalov I. S.
Заглавие : Paramagnetic-susceptibility and phonon instability of metal with localized and collectivized electron state mixing
Место публикации : Fiz. Tverd. Tela. - 1980. - Vol. 22, Is. 2. - P.424-430. - ISSN 0367-3294
Примечания : Cited References: 22
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhandun V. S., Zamkova N. G., Korzhavyi P., Sandalov I. S.
Заглавие : Lattice distortions and/or intercalation as ways to induce magnetism in a-FeSi2: a theoretical study
Место публикации : ArXiv. - 2018. - Ст.1805.06189
Примечания : Cited References: 20. - This work was supported by the Russian Fund for Basic Research, Government of Krasnoyarsk Territory and Krasnoyarsk Region Science and Technology Support Fund to the research Projects No 17-42-240212 and No 18-42-243019.
Аннотация: The possibilities to induce magnetism in the non-magnetic bulk α-FeSi2 by means of lattice distortions or intercalation with metal or non-metal ions of light elements is investigated theoretically by combined ab initio and model methods. We find that the distortions indeed can induce the formation of magnetic moment on iron atoms in certain local environments; however, the required strength of the distortions often is too large to be achieved in experiments. For this reason we suggest using "chemical pressure" that is, intercalating the α-FeSi2 films by light elements. We find that some of such variants have promising characteristic.
Смотреть статью,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Fransson J., Eriksson O., Johansson B., Sandalov I. S.
Заглавие : On the non-orthogonality problem in the description of quantum devices
Коллективы : International Conference on Nonequilibrium Carrier Dynamics in Semiconductors
Место публикации : Physica B/ International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (11 ; 1999 ; July ; 19-23 ; Kyoto, Japan). - 1999. - Vol. 272, Is. 1-4. - P.28-30. - ISSN 0921-4526, DOI 10.1016/S0921-4526(99)00343-9
Примечания : Cited References: 8
Предметные рубрики:
Ключевые слова (''Своб.индексиров.''): non-orthogonality--current--tunneling--correlation methods--electric contacts--electric currents--electron energy levels--electron tunneling--equations of motion--green's function--mathematical operators--matrix algebra--hubbard operators--potential barriers--tunneling currents--semiconductor quantum dots
Аннотация: An approach which allows to include the corrections from non-orthogonality of electron states in contacts and quantum dots is developed. Comparison of the energy levels and charge distributions of electrons in 1D quantum dot (QD) in equilibrium, obtained within orthogonal (OR) and non-orthogonal representations (NOR), with the exact ones shows that the NOR provides a considerable improvement, for levels below the top of barrier. The approach is extended to non-equilibrium states. A derivation of the tunneling current through a single potential barrier is performed using equations of motion for correlation functions. A formula for transient current derived by means of the diagram technique for Hubbard operators is given for the problem of QD with strongly correlated electrons interacting with electrons in contacts. The non-orthogonality renormalizes the tunneling matrix elements and spectral weights of Green functions. (C) 1999 Elsevier Science B.V. All rights reserved.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : SANDALOV I. S., HJORTSTAM O., JOHANSSON B., ERIKSSON O.
Заглавие : ORBITAL POLARIZATION IN METALLIC F-ELECTRON SYSTEMS
Разночтения заглавия :авие SCOPUS: Orbital polarization in metallic f-electron systems
Место публикации : Phys. Rev. B: AMERICAN PHYSICAL SOC, 1995. - Vol. 51, Is. 20. - P13987-14000. - ISSN 0163-1829, DOI 10.1103/PhysRevB.51.13987
Примечания : Cited References: 28
Предметные рубрики: MOTT INSULATORS
VOLUME COLLAPSE
CERIUM
LOCALIZATION
TRANSITION
PHASES
MODEL
WOS,
Scopus
Найти похожие