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    Самопроизвольное вращение магнитов, левитирующих над высокотемпературным сверхпроводником / Д. М. Гохфельд, С. Ю. Шаломов, Д. Б. Сультимов, М. И. Петров // Сверхпроводимость: фунд. и приклад. исслед. - 2024. - № 1. - С. 34-40 ; Supercond. Fund. Appl. Res., DOI 10.62539/2949-5644-2024-0-1-34-40. - Библиогр.: 11. - Авторы выражают благодарность А.Л. Фрейдману за создание сверхпроводящей платформы, С.В. Семенову за помощь с температурными измерениями, а также С.В. Комогорцеву за полезные обсуждения . - ISSN 2949-5644. - ISSN 2949-5660
   Перевод заглавия: Spontaneous rotation of magnets levitating above high-Tc superconductor
Кл.слова (ненормированные):
тепловая машина -- левитация -- REBCO -- композитная сверхпроводящая лента -- NdFeB -- heat machine -- levitation -- REBCO -- composite superconducting tape -- NdFeB
Аннотация: Левитация постоянного магнита цилиндрической формы над высокотемпературным сверхпроводником, охлаждаемым жидким азотом, сопровождается спонтанными колебаниями, переходящими во вращение. Причиной вращения является неоднородность намагниченности магнита, вызванная градиентом температур вдоль вертикальной оси. Проведен эксперимент по левитации магнитов Nd–Fe–B над композитным высокотемпературным сверхпроводником. Результаты эксперимента подтверждают, что частота вращения зависит от намагниченности верхней и нижней половин магнита. Предложены способы контроля частоты вращения левитирующего магнита.
Levitation of a cylindrical permanent magnet over a high-temperature superconductor cooled by liquid nitrogen can be accompanied by spontaneous oscillations and rotation. The reason for spontaneous rotation of the magnet is magnetization inhomogeneity induced by the temperature gradient. An experiment was carried out on the levitation of Nd–Fe–B magnets over a composite high-temperature superconductor. The experimental results confirm that the rotation frequency depends on the difference in the magnetization values in its upper and lower halves of the magnet. Methods for controlling the rotation frequency of a levitating magnet are proposed.

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Держатели документа:
Институт физики им. Л.В. Киренского ФИЦ КНЦ СО РАН, ул. Академгородок 50/38, 660036, Красноярск, Россия
Красноярский Государственный Педагогический Университет им. В.П. Астафьева, ул. А. Лебедевой 89, 660049, Красноярск, Россия
Физико-математическая школа Сибирского Федерального Университета, пр. Свободный 79, 660041, Красноярск, Россия

Доп.точки доступа:
Гохфельд, Денис Михайлович; Gokhfeld, D. M.; Шаломов, С. Ю.; Сультимов, Д. Б.; Петров, Михаил Иванович; Petrov, M. I.

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    Magnetoresistance and magnetoimpedance in holmium manganese sulfides / O. B. Romanova, S. S. Aplesnin, M. N. Sitnikov [et al.] // Appl. Phys. A. - 2022. - Vol. 128, Is. 2. - Ст. 124, DOI 10.1007/s00339-021-05198-x. - Cited References: 46. - Funding was provided by Russian Foundation for Fundamental Investigations (20-42-243002) . - ISSN 0947-8396. - ISSN 1432-0630
   Перевод заглавия: Магнитосопротивление и магнитоимпеданс в гольмиевом сульфиде марганца

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
PHASE-SEPARATION
IMPEDANCE
Кл.слова (ненормированные):
Sulfides -- I-V characteristics -- Electrical polarization -- Magnetoresistance -- Magnetoimpedance
Аннотация: The structure, transport characteristics, real and imaginary parts of the impedance components and electric polarization of the HoXMn1-XS (X = 0.1 and 0.2) system have been investigated in the temperature range of 80-500 K in magnetic fields of up to 12 kOe. The morphology of synthesized samples has been studied. The influence of the magnetic field on the transport characteristics, on both direct and alternating currents of holmium manganese sulfides, have been established. The negative effects of DC magnetoresistance in the region of the magnetic phase transition and positive AC magnetoimpedance up to 4% in the paramagnetic region have been established. The critical temperatures of the existence of the electric polarization have been determined. At a substitution concentration of X = 0.1, the activation character of the relaxation time versus temperature has been found. The diffusion contribution for the composition with X = 0.2 has been established by the impedance hodograph.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Udod, L. V.; Удод, Любовь Викторовна; Kharkov, A. M.; Russian Foundation for Fundamental InvestigationsRussian Foundation for Basic Research (RFBR) [20-42-243002]
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High-resolution x-ray spectra of carbon monoxide reveal ultrafast dynamics induced by long UV pulse / J. C. Liu, V. Savchenko, V. Kimberg [et al.] // New J. Phys. - 2021. - Vol. 23, Is. 6. - Ст. 063030, DOI 10.1088/1367-2630/ac0198. - Cited References: 47. - The reported study was funded by RFBR, project number 19-29-12015. J-CL thanks the support by the National Science Foundation of China under Grant Nos. 11974108, 11574082, and the Fundamental Research Funds for the Central Universities (No. 2021MS046). MO acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie Grant Agreement No. 860553 and the Carl Tryggers Foundation (contract CTS18:285). FG acknowledges also the support from the Helmholtz Virtual Institute VI419 'Dynamic Pathways in Multidimensional Landscapes'. VK acknowledges the Swedish Research Council (VR 2019-03470). The calculations were partially enabled by resources provided by the Swedish National Infrastructure for Computing (SNIC) partially funded by the Swedish Research Council through Grant Agreement No. 2018-05973 . - ISSN 1367-2630

РУБ Physics, Multidisciplinary
Рубрики:
VIBRATIONAL STRUCTURE
   SCATTERING
   RAMAN
   CO
   COLLAPSE
   PROBE
Кл.слова (ненормированные):
UV pump-x-ray probe -- molecular spectroscopy -- ultrafast dynamics -- potential energy surfaces -- x-ray absorption
Аннотация: In theoretical simulations of a UV + x-ray pump-probe (UVX-PP) setup, we show that frequency detuning of the pump UV pulse acts as a camera shutter by regulating the duration of the UVX-PP process. This two-photon absorption with long overlapping UV and x-ray pulses, allowing for high spectral resolution, thereby provides information about ultrafast dynamics of the nuclear wave packet without the requirement of ultrashort pulses and controlled delay times. In a case study of carbon monoxide, the calculated UVX-PP spectra of the O1s−12π1 and C1s−12π1 core-excited states show different vibrational profiles. The interference of intermediate vibrational states reveals details of nuclear dynamics in the UVX-PP process related to a variable duration time controlled by the UV detuning. Both O1s−12π1 and C1s−12π1 pump-probe channels display a splitting of the spectral profile, which however is associated with different physical mechanisms. At the O1s−12π1 resonance, the observed dispersive and non-dispersive spectral bands intersect and result in destructive interference.

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Держатели документа:
North China Elect Power Univ, Dept Math & Phys, Beijing 102206, Peoples R China.
KTH Royal Inst Technol, Dept Theoret Chem & Biol, S-10691 Stockholm, Sweden.
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Helmholtz Zentrum Berlin Mat & Energie, Inst Methods & Instrumentat Synchrotron Radiat Re, Albert Einstein Str 15, D-12489 Berlin, Germany.
Stockholm Univ, AlbaNova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.

Доп.точки доступа:
Liu, Ji-Cai; Savchenko, Viktoriia; Kimberg, V.; Кимберг, Виктор Валерьевич; Gel'mukhanov, F.; Гельмуханов, Фарис Хафизович; Odelius, Michael; RFBRRussian Foundation for Basic Research (RFBR) [19-29-12015]; National Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11974108, 11574082]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2021MS046]; European UnionEuropean Commission [860553]; Carl Tryggers Foundation [CTS18:285]; Helmholtz Virtual Institute [VI419]; Swedish Research CouncilSwedish Research CouncilEuropean Commission [VR 2019-03470, 2018-05973]
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    Broadband light emitting zero-dimensional antimony and bismuth-based hybrid halides with diverse structures / C. K. Deng, S. Q. Hao, K. J. Liu [et al.] // J. Mater. Chem. C. - 2021. - Vol. 9, Is. 44. - P. 15942-15948, DOI 10.1039/d1tc04198c. - Cited References: 52. - This work was supported by Beijing Municipal Natural Science Foundation (2182080) and the National Natural Science Foundation of China (51972021 and 51702329). The work was partly supported by the Fundamental Research Funds for the Central Universities (FRF-IDRY-19-005) and by the RFBR according to the research project No. 19-52-80003. S. H. and C. W. (DFT calculations) acknowledge support from the Department of Energy, Office of Science Basic Energy Sciences under Grant DE-SC0014520. Access to QUEST, the supercomputing resources facilities at Northwestern University, is also acknowledged . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Широкополосное излучение от нульмерных гибридных галогенидов на основе сурьмы и висмута с разнообразной структурой

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
CRYSTAL-STRUCTURE
   LONE-PAIR
   EMISSION
   PEROVSKITES
   TIN
   LUMINESCENCE
Аннотация: Low-dimensional organic–inorganic metal halides have recently attracted extensive attention because of their various structures and distinguished photoelectric properties. Herein, we report a series of new zero-dimensional organic–inorganic hybrid metal halides: (TMEDA)3Bi2Cl12·H2O, (TMEDA)3Bi2Br12·H2O, (TMEDA)3Sb2Br12·H2O, and (TMEDA)5Sb6Cl28·2H2O [TMEDA = N,N,N′·trimethylethylenediamine]. (TMEDA)3M2X12·H2O (M = Bi or Sb, X = Cl or Br) crystallizes in the monoclinic space group P21/n, and (TMEDA)5Sb6Cl28·2H2O crystallizes in the orthorhombic space group Pnma. (TMEDA)3M2X12 possesses a zero-dimensional structure with the metal halide ions of [MBr6]3− isolated by the organic TMEDA2+ cations. Interestingly, the (TMEDA)5Sb6Cl28·2H2O structure consists of a combination of corner-connected octahedra [Sb4Cl18]6− and edge-shared [Sb2Cl10]4−, which is quite rare. The light emission of all these compounds was measured, and (TMEDA)3Sb2Br12·H2O exhibits the most intense luminescence. Upon 400 nm ultraviolet light excitation, (TMEDA)3Sb2Br12·H2O exhibited strong broadband yellow emission centered at 625 nm with a full-width at half-maximum of ∼150 nm originating from self-trapped excitons. This work suggests the possibility of new types of hybrid halides by introducing different metal centers and probing the structural evolution and photoluminescent properties, serving as a reference for the relationship between structure and luminescent performance and demonstrating their potential use as phosphors in light-emitting diodes.

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Держатели документа:
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing Municipal Key Lab New Energy Mat & Techno, Beijing 100083, Peoples R China.
Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA.
RAS, SB, Lab Crystal Phys, Kirensky Inst Phys,Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Shanxi Normal Univ, Sch Chem & Mat Sci, Key Lab Magnet Mol & Magnet Informat Mat, Minist Educ, Linfen 041004, Shanxi, Peoples R China.

Доп.точки доступа:
Deng, Chenkai; Hao, Shiqiang; Liu, Kunjie; Molokeev, M. S.; Молокеев, Максим Сергеевич; Wolverton, Christopher; Fan, Liubing; Zhou, Guojun; Chen, D.a.; Zhao, Jing; Liu, Quanlin; Beijing Municipal Natural Science FoundationBeijing Natural Science Foundation [2182080]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51972021, 51702329]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [FRF-IDRY-19-005]; RFBRRussian Foundation for Basic Research (RFBR) [19-52-80003]; Department of Energy, Office of Science Basic Energy SciencesUnited States Department of Energy (DOE) [DE-SC0014520]
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Aksenov, S. V.
Strong Coulomb interactions in the problem of Majorana modes in a wire of the nontrivial topological class BDI / S. V. Aksenov, A. O. Zlotnikov, M. S. Shustin // Phys. Rev. B. - 2020. - Vol. 101, Is. 12. - Ст. 125431, DOI 10.1103/PhysRevB.101.125431. - Cited References: 60. - We acknowledge fruitful discussions with V. V. Valkov and V. A. Mitskan. The reported study was funded by the RAS Presidium programs for fundamental research Nos. 12 and 32, Russian Foundation for Basic Research (Projects No. 18-32-00443 and No. 19-02-00348), Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project: "Coulomb interactions in the problem of Majorana modes in low-dimensional systems with nontrivial topology" (Grant No. 19-42-240011). S.V.A. and A.O.Z. are grateful to the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools, Projects No. MK-1641.2020.2 and No. MK-3594.2018.2. S.V.A. acknowledges the support from the Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" (Grant No. 18-46-007). . - ISSN 2469-9950. - ISSN 2469-9969

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter
Рубрики:
QUANTUM
   POLARIZATION
   TRANSITION
   FERMIONS
   SPECTRUM
   STATE
Аннотация: In this study, the problem of strong Coulomb interactions in topological superconducting wire is analyzed by means of the density-matrix-renormalization-group (DMRG) approach. To analyze properties of edge states in the BDI-class structure, a quantity called Majorana polarization is used. From its dependence on wire length and an entanglement-spectrum degeneracy, topological phase diagrams are obtained. The DMRG calculations for the Shubin-Vonsovsky-type model of the wire show the transformation of phases with Majorana single and double modes (MSMs and MDMs, respectively) under the increase of onsite and intersite correlations. In particular, we demonstrate different scenarios including the possibilities of both induction and suppression of the MSMs and MDMs. It is shown that in the strongly correlated regime, the contributions of single-particle excitations to the Majorana-type states significantly decrease at low magnetic fxields. Moreover, the t-J*-V model is derived allowing to study the effective interactions and improve the DMRG numerics. It is found out that in the limiting case of the effective Hamiltonian with infinitely strong onsite repulsion, t model, the topological phases are destroyed. Finally, the ways to probe the MSMs and MDMs via the features of caloric functions are discussed.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zlotnikov, A. O.; Злотников, Антон Олегович; Shustin, M. S.; Шустин, Максим Сергеевич; Аксенов, Сергей Владимирович; RAS Presidium programs for fundamental research [32, 12]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-32-00443, 19-02-00348]; Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [19-42-240011]; Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific SchoolsLeading Scientific Schools Program [MK-1641.2020.2, MK-3594.2018.2]; Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" [18-46-007]
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Small-angle scattering and radiation polarization by a stretched polymer film with nematic liquid crystal droplets having a single-domain structure / V. A. Loiko, A. V. Konkolovich, A. A. Miskevich [et al.] // Opt. Spectrosc. - 2020. - Vol. 128, Is. 3. - P. 331-338, DOI 10.1134/S0030400X20030121. - Cited References: 24. - This work was carried out within the framework of the agreement on interacademic collaboration between the National Academy of Sciences of Belarus and Siberian Branch of the Russian Academy of Sciences. It was supported by the Belarusian Republican Foundation for Fundamental Research (project no. F18RA-003). M.N. Krakhalev acknowledges the support of the Russian Foundation for Basic Research, the Government of Krasnoyarsk krai, and Krasnoyarsk Krai Foundation of Science (grant no. 18-42-243006). . - ISSN 0030-400X. - ISSN 1562-6911

РУБ Optics + Spectroscopy
Рубрики:
IONIC MODIFICATION
LIGHT
Кл.слова (ненормированные):
light scattering -- radiation polarization -- liquid crystal
Аннотация: The coefficient of directed transmittance of a stretched polymer-dispersed liquid crystal film with a defect-free single-domain liquid crystal droplet structure formed by a stretched surfactant-doped film and the polarization degree of forward-transmitted light in the visible and near-infrared spectrum ranges are studied. Results are presented for the 5CB, E7, and E44 nematic liquid crystals. Dependences of the transmission coefficient and polarizing ability of the film on the photodetector field of view are studied. Relationships allowing one to determine film parameters at which the transmission coefficient and polarizing ability of the films simultaneously reach values close to limit ones (0.5 and ±1.0, respectively) are obtained in the Foldy–Twersky and anomalous diffraction approximations.

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Публикация на русском языке Малоугловое рассеяние и поляризация излучения вытянутой полимерной пленкой с каплями нематического жидкого кристалла, имеющими монодоменную структуру [Текст] / В. А. Лойко, А. В. Конколович, А. А. Мискевич, М. Н. Крахалев // Оптика и спектроскопия. - 2020. - Т. 128 Вып. 3. - С. 343-350

Держатели документа:
Natl Acad Sci Belarus, Stepanov Inst Phys, Minsk 220072, BELARUS.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Loiko, V. A.; Konkolovich, A. V.; Miskevich, A. A.; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Belarusian Republican Foundation for Fundamental Research [F18RA-003]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk krai; Krasnoyarsk Krai Foundation of Science [18-42-243006]
}
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Model to describe light scattering by polymer film containing droplets with inhomogeneous anchoring of liquid crystal molecules at the polymer-droplet interface: asymmetry effect in the angular distribution of light / A. V. Konkolovich [et al.] // Liq. Cryst. - 2019. - Vol. 46, Is. 9. - P. 1415-1427, DOI 10.1080/02678292.2019.1573331. - Cited References: 67. - The work was performed in the framework of an agreement on inter-academic cooperation between the National Academy of Sciences of Belarus and the SB RAS. It is supported by the Belarusian Republican Foundation for Fundamental Research (Project No. F18RA-003). MN Krakhalev thanks the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory and the Krasnoyarsk Regional Science Foundation (grant No. 18-42-243006). . - ISSN 0267-8292. - ISSN 1366-5855

РУБ Chemistry, Multidisciplinary + Crystallography + Materials Science, Multidisciplinary
Рубрики:
IONIC MODIFICATION
NEMATIC DROPLETS
COHERENT TRANSMITTANCE
Кл.слова (ненормированные):
Polymer-dispersed liquid crystal film -- liquid crystal droplets -- light transmission -- angular distribution of scattered light
Аннотация: A model to describe light scattering by polymer film containing of monolayer of liquid crystal droplets with inhomogeneous anchoring of liquid crystal molecules at the polymer-droplet interface is developed. It is based on the interference approximation of the wave scattering theory. The director field distribution in the droplet volume is determined by solving the free energy density minimization problem using the relaxation method. The spatial distribution of droplets in the layer is described by the hard disks model. The amplitude scattering matrices of individual droplets are found in the anomalous diffraction approximation. The algorithm for numerical analysis of the characteristics of light scattered in a polymer film containing droplets at homogeneous and inhomogeneous surface anchoring is described in terms of the partial filling factors of the monolayer film. Electrically controllable symmetry breaking effect of angular distribution of light scattered by films containing droplets with inhomogeneous anchoring at the polymer-droplet interface is described and experimentally confirmed.

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Держатели документа:
Natl Acad Sci Belarus, Stepanov Inst Phys, Minsk, BELARUS.
Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Siberian Branch,Kirensky Inst Phys, Krasnoyarsk, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia.

Доп.точки доступа:
Konkolovich, A. V.; Miskevich, A. A.; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Shabanov, A. V.; Шабанов, Александр Васильевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Loiko, V. A.; Belarusian Republican Foundation for Fundamental Research [F18RA-003]; Krasnoyarsk Regional Science Foundation [18-42-243006]
}
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    Anionic-cationic surfactant mixture providing the electrically controlled homeotropic surface anchoring of liquid crystals / M. N. Krakhalev [et al.] // J. Mol. Liq. - 2019. - Vol. 282: Suzdal Conference (2018, Suzdal, RUSSIA). - P. 57-62, DOI 10.1016/j.molliq.2019.02.132. - Cited References: 30. - The reported study was supported by the Belarusian Republican Foundation for Fundamental Research (project No X16P-110) and Russian Foundation for Basic Research (RFBR) (project No 16-53-00073). Mikhail N. Krakhalev and Vitaly S. Sutormin acknowledge financial support from RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science (project No 18-42-243006). . - ISSN 0167-7322. - ISSN 1873-3166
   Перевод заглавия: Смесь анионного и катионного сурфактантов, обеспечивающая электроуправляемое гомеотропное поверхностное сцепление в жидких кристаллах

РУБ Chemistry, Physical + Physics, Atomic, Molecular & Chemical
Рубрики:
IONIC MODIFICATION
   TRANSITION
   DROPLETS
   CONFIGURATION
   LAYER
Кл.слова (ненормированные):
Polymer dispersed liquid crystal -- Nematic droplet -- Ionic surfactant -- Anchoring transition -- Director configuration -- Optical texture
Аннотация: In search of a substance able to function as an anionic surfactant applied for the electrically-induced anchoring transitions in liquid crystals, the compound 4-heptyloxybenzoate benzyl dodecyldimethylammonium (HOBBDDA) has been synthesized. Its orienting influence on nematic liquid crystal 4-pentyl-4'-cyanobiphenyl (5CB) has been tested. HOBBDDA dissolved up to 1.4%in 50 droplets dispersed in polymer film does not change the tangential surface anchoring inherent to polyvinyl alcohol matrix used. Homeotropic surface anchoring is realized if the HOBBDDA content exceeds 1.7%. The molecules of the surfactant in 5CB dissociate into anions and cations. The anions modify the surface anchoring under the action of DC electric field both in the normal and inverse mode. The mixture of HOBBDDA and cetyltrimethylammonium bromide can function as a binary ionic cationic surfactant which significantly expands the prospects for using the ionic-surfactant method to control liquid crystal materials. (C) 2019 Elsevier B.V. All rights reserved.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Belarusian State Technol Univ, Minsk 220006, BELARUS.

Доп.точки доступа:
Krakhalev, M. N.; Крахалев, Михаил Николаевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Kuz'menok, N. M.; Mikhalyonok, S. G.; Bezborodov, V. S.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Belarusian Republican Foundation for Fundamental Research [X16P-110]; Russian Foundation for Basic Research (RFBR) [16-53-00073]; RFBR, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-42-243006]; International conference on Hole Burning, Single Molecule, and Related Spectroscopies: Science and Applications - 2018(XIII ; August 6-12, 2018 ; Suzdal - Moscow, Russia)
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Val'kov, V. V.
Renormalization of triplet populations of a spin dimer in zero magnetic field with quantum transport / V. V. Val'kov, S. V. Aksenov // Low Temp. Phys. - 2019. - Vol. 45, Is. 2 : 22nd Ural International Winter School on the Physics of Semiconductors (Feb 20-23, 2018, Alapayevsk, RUSSIA). - P. 165-175, DOI 10.1063/1.5086406. - Cited References: 20. - This work was performed with the support of the Program for Fundamental Research of the Presidium of the Russian Academy of Sciences, No. 32, "Nanostructures: physics, chemistry, biology, foundations of technology", the Russian Fund for Basic Research (grants #16-02-00073, #18-32-00443), the Government of Krasnoyarsk Krai, the Krasnoyarsk Regional Fund for Science within the scientific projects: "Connected Majorana fermions in nanomaterials with strong electron correlations and quantum transport of electrons in systems based on them" (No. 17-42-240441) and "Manifestation of Coulomb interactions and the effects of limited geometry in properties of topological regional states of nanostructures from spin-orbital interaction" (No. 18-42-243017). S.A. expresses his gratitude for a grant of the President of the Russian Federation MK-3722.2018.2. . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied
Рубрики:
SINGLE-MOLECULE
Аннотация: Based on the nonequilibrium Keldysh technique in the atomic representation, the effect of inducing a varied population of magnetic states of a spin dimer interacting with electrons transported through a system in a zero magnetic field was studied. In order to find the filling numbers of the quantum states of the system under the strong nonequilibrium condition, a system of kinetic equations was derived and solved by the method of nonequilibrium diagram technique for Hubbard operators. Numerical analysis of these equations made it possible to reveal nonequilibrium renormalizations when accounting for strong spin-fermion correlations.

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Публикация на русском языке Вальков, Валерий Владимирович. Ренормировки заселенностей триплетных состояний спинового димера в нулевом магнитном поле при квантовом транспорте [Текст] / В. В. Вальков, С. В. Аксенов // Физ. низких температур / чл. прогр. ком. В. В. Вальков. - 2019. - Т. 45 Вып. 2. - С. 192-203 : 19 – 24 февраля 2018 г. : гопрограмма и тезисы докладов / чл. прогр. ком. В. В. Вальков

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Aksenov, S. V.; Аксенов, Сергей Владимирович; Вальков, Валерий Владимирович; Program for Fundamental Research of the Presidium of the Russian Academy of Sciences [32]; Russian Fund for Basic Research [16-02-00073, 18-32-00443]; Government of Krasnoyarsk Krai; Krasnoyarsk Regional Fund for Science [17-42-240441, 18-42-243017]; Russian Federation [MK-3722.2018.2]; Ural International Winter School on the Physics of Semiconductors(22nd ; Feb 20-23, 2018 ; Alapayevsk, Russia)
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10.

    Spin-dependent electrical hole extraction from low doped p-Si via the interface states in a Fe3Si/p-Si structure / A. S. Tarasov [et al.] // Semicond. Sci. Technol. - 2019. - Vol. 34, Is. 3. - Ст. 035024, DOI 10.1088/1361-6641/ab0327. - Cited References: 56. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund by project. 18-42-243022 and supported in part by the Russian Foundation for Basic Research by project no. 18-32-00035. The work was partially supported by the Ministry of Education and Science of the Russian Federation and by Siberian Branch of the Russian Academy of Sciences (Project II.8.70) and Fundamental research program of the Presidium of the RAS no. 32 "Nanostructures: physics, chemistry, biology, basics of technologies" . - ISSN 0268-1242. - ISSN 1361-6641
   Перевод заглавия: Спин-зависимая электрическая экстракция дырок из низколегированного p-Si через интерфейсные состояния в структуре Fe3Si/p-Si

РУБ Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
ALLOYS
Кл.слова (ненормированные):
spin accumulation -- interface states -- hybrid structures -- Hanle effect -- iron silicide
Аннотация: Spin accumulation effect in Fe3Si/p-Si structure with low boron doped silicon substrate was found. Calculated spin lifetimes are comparable with results reported earlier but for structures with highly doped semiconductors (SC) with or without a tunnel barrier introduced between the SC and ferromagnet (FM). Electrical characterization of a prepared Fe3Si/p-Si diode allowed the determination of possible reasons for the pronounced spin signal. Analysis of the forward bias I-V curve revealed a Schottky barrier at the Fe3Si/p-Si interface with a height of φBp = 0.57 eV. Then, using impedance spectroscopy, we observed interface states localized in the band gap of silicon with energy of E LS = 40 meV. Such states most probably cause the observed spin signal. We believe that in our experiment, spin-dependent hole extraction was performed via the interface states resulting in the minority spin accumulation in the silicon valence band. The observed effect paves the way to the development of different spintronic devices based on FM/SC structures without dielectric tunneling barriers.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Tarasov, A. S.; Тарасов, Антон Сергеевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Bondarev, I. A.; Бондарев, Илья Александрович; Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Baron, F. A.; Барон, Филипп Алексеевич; Volkov, N. V.; Волков, Никита Валентинович; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund [18-42-243022]; Russian Foundation for Basic Research [18-32-00035]; Ministry of Education and Science of the Russian Federation; Siberian Branch of the Russian Academy of Sciences [II.8.70]; Fundamental research program of the Presidium of the RAS [32]
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