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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Avramov P. V.
Заглавие : The role of interfaces in determination of electronic properties of complex silicon nanoclusters
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering": book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.11
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Melchakova I., Kovaleva E. A., Mikhaleva, Natalia S., Tomilin F. N., Ovchinnikov S. G., Kuzubov A. A., Avramov P. V.
Заглавие : External electric field effect on electronic properties and charge transfer in CoI2/NiI2 spinterface
Коллективы : Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [16.1455.2017/PCh]; National Research Foundation of KoreaNational Research Foundation of Korea [NRF-2017R1A2B4004440]; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-43-243011]
Место публикации : Int. J. Quantum Chem. - 2020. - Vol. 120, Is. 3. - Ст.e26092. - ISSN 0020-7608, DOI 10.1002/qua.26092. - ISSN 1097-461X(eISSN)
Примечания : Cited References: 27. - Ministry of Education and Science of the Russian Federation, Grant/Award Number: 16.1455.2017/PCh; National Research Foundation of Korea, Grant/Award Number: NRF-2017R1A2B4004440; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, Grant/Award Number: 18-43-243011
Предметные рубрики: MAGNETIC-PROPERTIES
METAL
EDGE
Аннотация: Electronic structure and spin-related properties of CoI2/NiI2 heterostructure were studied by means of density functional theory. It was shown that the electronic structure at the Fermi level can be characterized by a band gap. The effect of the external electric field on charge transfer and electronic properties of the CoI2/NiI2 interface was investigated, and it was found that band gap width depends on the strength of the applied electric field, switching its nature from semiconducting to a half-metallic one. An easy control of the electronic properties and promising spin-polarized nature of the CoI2/NiI2 spinterface allows the heterostructure to be used in spin-related applications.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Makarov I. A., Gavrichkov V. A., Shneider E. I., Nekrasov I. A., Slobodchikov A. A., Ovchinnikov S. G., Bianconi A.
Заглавие : Influence of CuO2 lattice strain on the electronic structure of high-Tc cuprate family
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.I.P12. - P.157-158. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4. - We thank the Presidium RAS program No.12 for the financial support under the project 0356-2018-0063. The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science according to the research project:”Features of electron-phonon coupling in high-temperature superconductors with strong electronic correlations” No. 18-42-240017. This work was done under the State contract (FASO) No. 0389-2014-0001 and supported in part by RFBR grants No. 17-02-00015 and 18-02-00281
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nemtsev I. V., Zhandun V. S.
Заглавие : Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within DFT and GW approaches
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.]; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.P17. - P.99-101. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 3. - This work was supported by the “BASIS” Foundation for Development of Theoretical Physics and Mathematics, and the Krasnoyarsk Regional Fund of Science and Technology Support according to the participation in the VII Euro-Asian Symposium “Trends in Magnetism”: EASTMAG-2019
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Makarov I. A., Gavrichkov V. A., Shneider E. I., Nekrasov I. A., Pavlov N. S., Ovchinnikov S. G., Bianconi A.
Заглавие : Influence of orthorhombic deformations in CuO2 plane on the electronic structure of high-Tc cuprate family
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.I.O1. - P.114-115. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krasnov P. O., Milyutina Y. M.
Заглавие : Exited electronic states of porphyrin-fullerene dyads with different type of bonding
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.34
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kazak N. V., Rudenko V. V., Gromilov S. A., Ovchinnikov S. G., Knyazev Yu. V.
Заглавие : Structural, magnetic and electronic properties of vanadium-substituted iron warwickite
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.P4. - P.79-80. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4. - Support by the Russian Foundation for Basic Research, Russia (project no. 17-02-00826-a) and Council for Grants of the President of the Russian Federation SP-1334.2019.5 is acknowledged
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nemtsev I. V., Zhandun V. S.
Заглавие : Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within dft and GW approaches
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.P17. - P.99-100. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 5. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project no. 18-42-243019: “Firstprinciples studies of the polarization, magnetic, electronic, and magnetoelectric properties of functional compounds with a spinel structure containing 3d and 4f ions”. This work has been carried out using computing resources of the federal collective usage center Complex for Simulation and Data Processing for Mega-science Facilities at NRC “Kurchatov Institute”, http://ckp.nrcki.ru/
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhandun V. S., Nemtsev A. V.
Заглавие : Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within DFT and GW approaches
Место публикации : J. Magn. Magn. Mater. - 2020. - Vol. 499. - Ст.166306. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2019.166306. - ISSN 1873-4766 (eISSN)
Примечания : Cited References: 65. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project № 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». The calculations were performed with the computer resources of “Complex modeling and data processing research installations of mega-class ”SRC“ Kurchatovsky Institute” (http://ckp.urcki.ru).
Аннотация: The spinel cobalt oxide Co3O4 is an antiferromagnetic semiconductor containing two non-equivalent Co2+ and Co3+ cobalt ions with different local environments and different magnetic moments. We have performed ab initio study and comparison of the electronic, magnetic and optical properties of Co3O4 within GGA, GGA + U, and G0W0 approximations. GGA correctly predicts Co3O4 to be a semiconductor, but severely underestimates the bandgap. G0W0 approximations increase the bandgap indicating a better description of the cobalt localized d-states. The spectral weights of the bands near Fermi energy are about 0.5. Ab initio calculations confirm that the low-spin state of Co3+ ion arises due to the local environment and the crystal effect field. The investigation of the pressure dependencies of magnetic properties revealed the appearance of Co3+ ion abrupt transition from low-spin state to high-spin state under tensile pressure. This allows manipulating the spin state of Co3+ ions through the pressure or strain.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Demin V. A., Sorokin P. B., Avramov P. V., Chernozatonskii L. A.
Заглавие : Atomic structure and electronic properties of beta-phase silicon nanowires
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.36
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bezotosnyi P. I., Dmitrieva K. A., Sadakov A. V., Pervakov K. S., Muratov A. V., Usoltsev A. S., Tsvetkov, A. Yu., Gavrilkin, S. Yu., Pavlov N. S., Slobodchikov A. A., Vilkov, O. Yu., Rybkin A. G., Nekrasov I. A., Pudalov V. M.
Заглавие : Electronic band structure and superconducting properties of SnAs
Коллективы : Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [16-29-03330, 17-02-00015, 19-32-50001]; Ministry of Science and Higher Education of the Russian Federation [0023-2019-0005]; Saint Petersburg State University [40990069]; Presidium of RASRussian Academy of Sciences [12]; [MK-1683.2019.2]
Место публикации : Phys. Rev. B. - 2019. - Vol. 100, Is. 18. - Ст.184514. - ISSN 2469-9950, DOI 10.1103/PhysRevB.100.184514. - ISSN 2469-9969(eISSN)
Примечания : Cited References: 45. - The authors thank E. Z. Kuchinskii and M. V. Sadovskii for valuable discussions. This work was performed using equipment of the LPI Shared Facility Center and the resource center "Physical methods of surface investigation" (PMSI) of the Research park of Saint Petersburg State University. V.M.P. acknowledges Russian Foundation for Basic Research (RFBR) Grant No. 16-29-03330. P.I.B., K.A.D., A.V.S., K.S.P., A.V.M., A.S.U., A.Y.T., and S.Y.G. were supported within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (Project No. 0023-2019-0005). A.G.R. acknowledges Saint Petersburg State University for research Grant No. 40990069. I.A.N., A.A.S., and N.S.P. acknowledge Russian Foundation for Basic Research (RFBR) Grants No. 17-02-00015 and No. 19-32-50001, the Program No. 12 of Fundamental Research of the Presidium of RAS. N.S.P. was also supported in part by the President of Russia grant for young scientists No. MK-1683.2019.2.
Предметные рубрики: TOPOLOGICAL CRYSTALLINE INSULATOR
GAP STRUCTURE
SPECTROSCOPY
Аннотация: We report a comprehensive study of physical properties of the binary superconductor compound SnAs. The electronic band structure of SnAs was investigated using both angle-resolved photoemission spectroscopy (ARPES) in a wide binding energy range and density functional theory (DFT) within generalized gradient approximation (GGA). The DFT/GGA calculations were done including spin-orbit coupling for both bulk and (111) slab crystal structures. Comparison of the DFT/GGA band dispersions with ARPES data shows that the spectrum for the (111) slab much better describes ARPES data than that for the bulk. In addition, we studied experimentally superconducting properties of SnAs by specific heat, magnetic susceptibility, magnetotransport measurements, and Andreev reflection spectroscopy. Temperature dependencies of the superconducting gap and of the specific heat were found to be well consistent with those expected for the single band BCS superconductors with an isotropic s-wave order parameter. Despite spin-orbit coupling present in SnAs, our data show no signatures of a potential unconventional superconductivity, and the characteristic BCS ratio 2Δ/Tc=3.48–3.73 is very close to the BCS value in the weak coupling limit.
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12.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Knyazev Yu. V., Dudnikov V. A., Kazak N. V., Platunov M. S., Solovyov L. A., Verechschagin S. N., Burkov A. T., Novikov S. V.
Заглавие : Electronic states of the iron ions in the oxygen deficient perovskite Gd0.2Sr0.8FeO3-δ
Коллективы : Мёссбауэровская спектроскопия и её применения, международная конференция, Mössbauer Spectroscopy and Applications, International Conference, Южный федеральный университет, МИРЭА-Российский технологический университет, Российская академия наук, Институт кристаллографии им. А.В. Шубникова РАН, Федеральный научно-исследовательский центр "Кристаллография и фотоника" РАН, Московский государственный университет им. М.В. Ломоносова
Место публикации : Мёссбауэровская спектроскопия и её применения: сб. материалов XV международной конференции. - Ростов-на-Дону, 2018. - С. 45. - ISBN 978-5-9275-2831-8
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Edelman I. S., Rautskii M. V., Molokeev M. S.
Заглавие : Correlation between magneto-optical and transport properties of Sr doped manganite films
Место публикации : J. Alloys Compd. - 2019. - Vol. 782. - P.334-342. - ISSN 09258388 (ISSN) , DOI 10.1016/j.jallcom.2018.12.158
Примечания : Cited References: 51. - The authors are grateful to A.V. Malakhovskii (Kirensky Institute of Physics, Federal Research Center KSC SB RAS) for fruitful discussions of the magneto-optics data and V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films. The work was supported partly by Russian Academy of Sciences , [grant number 0356-2017-0030 ], and the Russian Foundation for Basic Research , [grant number 16-32-00209 ].
Ключевые слова (''Своб.индексиров.''): thin films--manganites--crystal structure--electrical transport--electronic properties--magnetic circular dichroism
Аннотация: The features of electronic structure of La0.7Sr0.3MnO3 Pr0.8Sr0.2MnO3, and Pr0.6Sr0.4MnO3 polycrystalline films of different thickness have been investigated using magnetic circular dichroism (MCD) in the range of 1.1–4.2 eV. The temperature behavior of the samples electrical resistance were also has been studied. It was found that films with high Sr content (0.3 and 0.4) act as high-temperature semiconductors, while the maximum in the temperature dependences of resistivity these films indicates the transition of the samples to the metallic state at some temperature TM-S, which is different for different sample thickness. The films with the lower Sr content (0.2) act as insulators in the used temperature range. The MCD spectra have been decomposed to the Gaussian-shaped lines, and the temperature dependence of intensity of each line has been analyzed in comparison with temperature dependence of the films magnetization and with their electric conductivity type. Different temperature behavior of the intensity of four specified Gaussian-lines was revealed for semiconductor films. In the case of insulating Pr0.8Sr0.2MnO3 samples, the intensity of three specified Gaussian lines changes with the temperature in the same way as the magnetization changed. It was established that the lanthanide (La, Pr) type does not affect the MCD spectra shape for the films with the same electrical conductivity type. Besides, the correlation between the MCD data of the films and their conductivity type was revealed. Due to the detailed analysis of the specified Gaussian lines with taking into account the well-known in the literature absorption bands, lying outside the studied spectral region, the MCD bands for the studied manganite films have been identified with electronic transitions of a different nature.
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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nemtsev I. V., Zhandun V. S., Zinenko V. I.
Заглавие : First-principle calculations of electronic, magnetic and optical properties of spinels MnFe2O4 and FeMn2O4
Коллективы : International Seminar on Ferroelastic Physics, Международный семинар по физике сегнетоэластиков, Российская академия наук, Воронежский государственный технический университет
Место публикации : Ninth international seminar on ferroelastic physics (ISFP-9): book of abstracts/ org. com. I. N. Flerov [et al.] ; progr. com. V. I. Zinenko [et al.]. - 2018. - P.84
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makarov I. A., Gavrichkov V. A., Shneyder E. I., Nekrasov I. A., Slobodchikov A. A., Ovchinnikov S. G., Bianconi A.
Заглавие : Effect of CuO2 lattice strain on the electronic structure and properties of high-Tc cuprate family
Место публикации : J. Supercond. Novel Magn. - 2019. - Vol. 32, Is. 7. - P.1927-1935. - ISSN 15571939 (ISSN) , DOI 10.1007/s10948-018-4936-9
Примечания : Cited References: 51. - We thank the Presidium RAS program No.12 “Fundamental problems of high temperature superconductivity” for the financial support under the project 0356-2018-0063. The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science according to the research project:“Features of electron-phonon coupling in high-temperature superconductors with strong electronic correlations” No. 18-42-240017. This work was done under the State contract (FASO) No. 0389-2014-0001 and supported in part by RFBR grants No. 17-02-00015 and 18-02-00281.
Аннотация: Doping and strain dependences of the electronic structure of the CuO6-octahedra layer within LDA+GTB method in the frameworks of six-band p-d model are calculated. Band structure and Fermi surface of the quasiparticle excitations in the effective Hubbard model are characterized by inhomogeneous distribution of the k-dependent spectral weight. Doping results in reconstruction of the band structure, redistribution of the spectral weight over dispersion surface, and reconstruction of Fermi surface from small hole pockets in the underdoped region to large hole contour in the overdoped region through two quantum phase transitions (QPT). Strain increasing leads to displacement of the valence and conductivity bands, bandwidths decreasing, and shift of the concentrations corresponding to QPTs. Strain dependences of the antiferromagnetic exchange coupling and DOS at the Fermi level determining superconducting temperature Tc are obtained. Effective exchange coupling in the equation for Tc demonstrates monotonic strain dependence.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Val'kov V. V., Dzebisashvili D. M., Korovushkin M. M., Barabanov A. F.
Заглавие : Stability of the superconducting d-wave pairing towards the Coulomb repulsions in cuprate superconductors
Коллективы : International symposium on strong nonlinear vibronic and electronic interactions in solids
Место публикации : VI International symposium on strong nonlinear vibronic and electronic interactions in solids: book of abstracts . - 2018. - P.33
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Govorun I. V., Leksikov A. A.
Заглавие : New method for observation ferromagnetic resonance spectra
Коллективы : International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering, Institute of Electrical and Electronics Engineers
Место публикации : 14th International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering, APEIE 2018: Proceedings. - 2018. - P.41-44. - ISBN 9781538670545, DOI 10.1109/APEIE.2018.8545359
Примечания : Cited References: 8
Предметные рубрики: Magnetomechanical effects
Magnetic films
Magnetic fields
Ключевые слова (''Своб.индексиров.''): microstrip resonator--coupling coefficient--ferromagnetic resonance--damping pole
Аннотация: A new method for observation of ferromagnetic resonance spectra is demonstrated. Its operation based on the registering a damping pole in the frequency response of two-resonator microstrip structure containing a sample under investigation. A damping pole arises due to mutual compensation of capacitive (electric) and inductive (magnetic) interactions between the resonators and this compensation get broken in the ferromagnetic resonance.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhonova L. V., Korshunov M. M.
Заглавие : Effect of the additional Se layer on the electronic structure of iron-based superconductor FeSe/SrTiO3
Место публикации : J. Supercond. Novel Magn. - 2020. - Vol. 33, Is. 1. - P.171-176. - ISSN 15571939 (ISSN), DOI 10.1007/s10948-019-05253-y
Примечания : Cited References: 70. - This work was supported in part by “BASIS” Foundation for Development of Theoretical Physics and Mathematics.
Аннотация: We use density functional theory to study the structure and the band structure of the monolayer FeSe deposited on the SrTiO3 substrate with the additional layer of Se between them. The top of the SrTiO3 is formed by the double TiOx layer with and without oxygen vacancies. Several structures with different arrangements of the additional Se atoms above the double TiOx layer are considered. Equilibrium structures were found, and the band structures for them were obtained. Near the Γ = (0,0,0) point of the Brillouin zone, the hole Fermi surface pockets persist and, additionally, an electron pocket appears. Thus, neither the presence of the additional Se layer nor the oxygen vacancies in the double TiOx layer lead to the sinking of hole bands below the Fermi level near the Γ point. The necessity to include the strong electronic correlations into account is discussed.
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kazak N. V., Knyazev Yu. V., Platunov M. S., Vasiliev A. D., Bezmaternykh L. N., Rudenko V. V., Ivanova N. B., Bartolome J., Arauzo A., Ovchinnikov S. G.
Заглавие : Electronic and magnetic states of the Co and Fe in ludwigite system Co3бxFexBO5
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.]; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.04. - P.57-58. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 6. - The work was supported by Russian Foundation for Basic Research (project nos. 17-02-00826-a).
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Isaenko L. I., Korzhneva K. E., Khyzhun O. Y., Molokeev M. S., Goloshumova A. A., Tarasova A. Y.
Заглавие : Structural and X-ray spectroscopy studies of Pb1-xBax(NO3)2 solid solutions
Место публикации : J. Solid State Chem. - 2019. - Vol. 277. - P.786-792. - ISSN 00224596 (ISSN), DOI 10.1016/j.jssc.2019.07.047
Примечания : Cited References: 37. - This work was done on state assignment of IGM SB RAS, Ministry of Science and Higher Education of the Russian Federation and was supported by Russian Foundation for Basic Research (grant No. 18-32-00359).
Аннотация: Pb0.75(3)Ba0.25(3)(NO3)2, Pb0.68(3)Ba0.32(3)(NO3)2, Ba0.58(3)Pb0.42(3)(NO3)2, Ba0.81(3)Pb0.19(3)(NO3)2 crystals were grown for the first time when studying the Pb(NO3)2–Ba(NO3)2–H2O system. The crystals were grown in water solution with different relation of Pb(NO3)2 and Ba(NO3)2. It was found that series of solid solutions were formed by interaction of simple Pb(NO3)2 and Ba(NO3)2 compounds with a slow increase of volume and cell parameters from pure lead nitrate to pure barium nitrate. The crystal structure of all obtained Pb1-xBax(NO3)2 crystals belong to a cubic space group Pa-3. In these structures, Pb and Ba cations have the same coordination number 12, but different ionic radii (1.49 and 1.61 Å, respectively), anionic group is an equilateral triangle with O–O–O angle of 60° and O–O bond lengths ranging from 2.1305(8) to 2.2585(7) Å. The Pb2+ ion has a lone pair of electrons that are likely to be stereochemically active in these solid solutions leading to a significant amount of local disorder which explains the spread in the lattice parameters. The Pb1-xBax(NO3)2 solid solutions were characterized by X-ray photoelectron spectroscopy (XPS) by measuring the binding energies of the core-levels of constituting atoms and the shapes of the valence band. The XPS measurements indicate that the substitution of Pb for Ba does not cause changes in the charge states of the atoms constituting the Pb1-xBax(NO3)2 crystals. Matching the XPS valence-band spectra and the X-ray emission O Kα bands on a common energy scale indicates that the principal contributions of O 2p states occur at the top of the valence band of the crystals under study with also their substantial input in the upper and central portions of the band.
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