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Aver'yanov, E. M.
Orientational order and polarizability of molecules in a nematic liquid crystal / E. M. Aver'yanov // Phys. Solid State. - 2014. - Vol. 56, Is. 5. - P. 1058-1063, DOI 10.1134/S1063783414050035. - Cited References: 17 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
NORMAL-BUTYLANILINE MBBA
   INTERNAL-ROTATION
   TRANSITION
   PHASE
Аннотация: The influence of the orientational order of molecules in a nematic liquid crystal on the mean value ?? and anisotropy ?? of the molecular polarizability has been studied in the framework of the molecular statistical approach with allowance for the perturbation of the electronic structure of molecules due to the change in the conformation of their aromatic core and intermolecular interactions. Experimental dependences of ?? and ?? on the molecular orientational order parameter S have been derived, and their specific features for the known objects have been explained. The possibility of separating the contributions of opposite signs to the dependence ??(S) due to the change in the conformation of molecules and intermolecular interactions has been shown using nematic MBBA as an example. © 2014 Pleiades Publishing, Ltd.

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Публикация на русском языке Аверьянов, Евгений Михайлович. Ориентационный порядок и поляризуемость молекул в нематическом жидком кристалле [Текст] / Е. М. Аверьянов // Физ. тверд. тела. - 2014. - Т. 56 Вып. 5.- P.1019-1023

Доп.точки доступа:
Аверьянов, Евгений Михайлович
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Aver'yanov, E. M.
Structural and thermodynamic consequencies of the interaction of conformational degrees of freedom of azomethines in the nematic phase / E. M. Aver'yanov // J. Struct. Chem. - 2014. - Vol. 55, Is. 4. - P. 605-611, DOI 10.1134/S0022476614040039. - Cited References: 21 . - ISSN 0022-4766. - ISSN 1573-8779

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
CONJUGATED POLY(AZOMETHINE)S
   TERMINAL SUBSTITUENTS
   ELECTRONIC-STRUCTURES
   FLUORINATED ANALOGS
   INTERNAL-ROTATION
   MOLECULES
   COMPOUND
   ANGLES
   STATE
   NMR
Кл.слова (ненормированные):
azomethines -- benzylideneaniline -- conformation -- steric effects of substituents -- nematic-isotropic liquid transition -- conformational polymorphism
Аннотация: The interaction of the conformational degrees of freedom of azomethines in the nematic phase, which is induced by electronic donor-acceptor properties of the terminal substituents of the benzylideneaniline core is studied. These degrees of freedom related to the rotation angles phi (k) around the bonds between the substituent and the aniline ring (phi(1)) and also between the CH=N bridge and the aniline ring (omega(2)) are characterized by the parameters Q (k) = aOE (c) cos(2)phi (k) >. It is found that the interaction of these degrees of freedom is manifested in the linear dependence Q (2)(Q (1)). Within the phenomenological theory the effect of this interaction on changes delta (k) in the Q (k) values during the nematic liquid crystal-isotropic liquid phase transition is revealed along with the temperature T (NI) and character of this transition. The derivation of previously established empirical dependences T (NI)(Q (k) ) is presented in the presence of direct and indirect steric effects of side substituents affecting the Q (k) values. A diverse combination of delta (k) signs in the nematic phase, which is a prerequisite for the conformational polymorphism of the nematic phases of azomethines, is shown.

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Публикация на русском языке Аверьянов, Евгений Михайлович. Структурные и термодинамические следствия взаимодействия конформационных степеней свободы азометинов [Текст] / Е. М. Аверьянов // Журн. структ. химии. - Новосибирск : Изд-во СО РАН, 2014. - Т. 55 № 4. - С. 641 - 647

Доп.точки доступа:
Аверьянов, Евгений Михайлович
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Bulgakov, E. N.
Spin rotation for ballistic electron transmission induced by spin-orbit interaction / E. N. Bulgakov, A. F. Sadreev // Phys. Rev. B. - 2002. - Vol. 66, Is. 7. - Ст. 75331, DOI 10.1103/PhysRevB.66.075331. - Cited References: 18 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
2-DIMENSIONAL ELECTRONS
WAVE-GUIDES
TRANSPORT
Аннотация: We study spin-dependent electron transmission through one- and two-dimensional curved waveguides and quantum dots with account of spin-orbit interaction. We prove that for a transmission through an arbitrary structure there is no spin polarization provided the electron transmits in an isolated energy subband and only two leads are attached to the structure. In particular there is no spin polarization in the one-dimensional wire, for which a spin-dependent solution is found analytically. The solution demonstrates the spin evolution as dependent on a length of wire. The numerical solution for transmission of electrons through the two-dimensional curved waveguides coincides with the solution for the one-dimensional wire if the energy of electron is within the first energy subband. In the vicinity of edges of the energy subbands there are sharp anomalies of spin flipping.

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Держатели документа:
Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
Linkoping Univ, Dept Phys & Measurement Technol, S-58183 Linkoping, Sweden
ИФ СО РАН
Institute of Physics, Academy of Sciences, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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    Cholesteric layers with tangential-conical surface anchoring for an electrically controlled polarization rotator / V. S. Sutormin, M. N. Krakhalev, I. V. Timofeev [et al.] // Opt. Mater. Express. - 2021. - Vol. 11, Is. 5. - P. 1527-1536, DOI 10.1364/OME.425130. - Cited References: 25. - Russian Science Foundation (Grant No. 18-72-10036) . - ISSN 2159-3930
   Перевод заглавия: Холестерические слои с тангенциально-коническим поверхностным сцеплением для электро-управляемого вращателя поляризации
Кл.слова (ненормированные):
Azimuthal rotation -- Cholesteric helix -- Conical boundary condition -- Conical surfaces -- Control voltages -- Controlled polarization -- Polarization characteristics -- Voltage dependence
Аннотация: The voltage dependences of polarization characteristics of light passed through the cholesteric layers with tangential-conical boundary conditions have been investigated. It has been shown that such layers allow turning the polarization azimuth more than 70˚ because of the unique untwisting effect of the cholesteric helix, due to free azimuthal rotation of the director on the substrate with conical anchoring. Optical cells under study have some advantages (low control voltage, smooth variation of polarization azimuth, simplicity of design) and can be used as an electrically controlled polarization rotator of white light.

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Держатели документа:
Federal Research Center Ksc Sb Ras, Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Sutormin, V. S.; Сутормин, Виталий Сергеевич; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Prishchepa, O. O.; Прищепа, Оксана Олеговна; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
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Dispersion of Faraday rotation in Co/SiO2 multilayer films / I. S. Edelman [et al.] // JETP Letters. - 1996. - Vol. 63, Is. 4. - P. 273-277, DOI 10.1134/1.567015. - Cited References: 9 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
PARTICLES
Аннотация: The Faraday rotation spectra of Co/SiO2 multilayer films were found to be substantially different from the well-known spectra of homogeneous Co films. The character of these changes was studied as a function of the thicknesses of the ferromagnetic metal and the nonmagnetic dielectric layers. (C) 1996 American Institute of Physics.

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Держатели документа:
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation
ИФ СО РАН

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Morozova, T. P.; Zabluda, V. M.; Kim, T. A.; Turpanov, I. A.; Турпанов, Игорь Александрович; Betenkova, A. Ya.; Бетенькова, Анна Яковлевна; Dynnik, Y. A.
}
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Edelman, I.
Oxide glasses with magnetic nanoparticles: transparent magnets (Faraday rotation and electron magnetic resonance studies) / I. . Edelman, J. . Kliava // Phys. Status Solidi B. - 2009. - Vol. 246, Is. 10. - P. 2216-2231, DOI 10.1002/pssb.200945169. - Cited References: 87. - This work is supported in part by RFBR-CNRS joint project, grant No 07-02-92174. We are grateful to E. Petrakovskaja and O. Ivanova for measuring and discussing, respectively, the EMR spectra in thermally treated samples and the FR spectral and magnetic field dependences. . - ISSN 0370-1972

РУБ Physics, Condensed Matter
Рубрики:
SPIN-HAMILTONIAN PARAMETERS
   SINGLE-DOMAIN PARTICLES
   SUPERPARAMAGNETIC RESONANCE
   CRYSTALLIZATION BEHAVIOR
   FERRIMAGNETIC RESONANCE
   PARAMAGNETIC-RESONANCE
   TEMPERATURE-DEPENDENCE
   COMPUTER-SIMULATIONS
   FINE PARTICLES
   BORATE GLASSES
Аннотация: In the first part of this paper we outline the state of the art in the field of magnetic nanoparticles in oxide glasses. We describe the theoretical background of two complementary techniques used for the studies of the state of paramagnetic ions, clusters and magnetic particles in a diamagnetic matrix, viz., magnetooptical Faraday rotation (FR) and electron magnetic resonance (EMIR) and we overview previous results obtained with these techniques for several glass systems. In the second part, we highlight the case of potassium-alumina-borate glasses - a glassy system where doping with paramagnetic oxides results in formation of magnetic particles at very low contents of paramagnetic additions: Fe(2)O(3) and MnO. In the special case when the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles with characteristics close to those of manganese ferrite are formed already at the first stage of the glass preparation. After thermal treatment all glasses show FR and EMR spectra attesting to the presence of superparamagnetic nanoparticles, characterized by relatively broad size and shape distributions. The formation of magnetic nanoparticles confers to these glasses magnetic and magnetooptical properties typical of magnetically ordered substances. At the same time, the glasses remain transparent in a part of the visible and near infrared spectral range and display a high FR value. Such properties make them particularly interesting for use as new media for various magneto-optical devices. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Держатели документа:
[Edelman, Irina] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Kliava, Janis] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, CNRS, UMR 5798, F-33405 Talence, France
ИФ СО РАН
L.V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 38, 660036 Krasnoyarsk, Russian Federation
Centre de Physique Moleculaire Optique et Hertzienne, Universite Bordeaux1-CNRS, UMR 5798, 351 cours de la Liberation, 33405 Talence cedex, France

Доп.точки доступа:
Kliava, J.; RFBR-CNRS [07-02-92174]
}
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Electron-rotation coupling in diatomics under strong-field excitation / Y. R. Liu, Y. Wu, J. G. Wang [et al.] // Phys. Rev. A. - 2020. - Vol. 102, Is. 3. - Ст. 033114, DOI 10.1103/PhysRevA.102.033114. - Cited References: 78. - S.B.Z. thanks H. D. Meyer for his helpful instructions of Wigner-DVR in MCTDH. Grants from the National Basic Research Program of China (2017YFA0403200), NSFC (No. 11604197, No. 11974230, and No. 11934004), the Science Challenge Program of China (TZ2018005 and TZ2016005) are acknowledged. V.K. acknowledges financial support from Swedish Research Council (VR) and the Ministry of Science and High Education of Russian Federation, Project No. FSRZ2020-0008. . - ISSN 2469-9926. - ISSN 2469-9934

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
REAL-TIME OBSERVATION
   DYNAMICS
   LASER
   ULTRAFAST
   MOLECULES
Аннотация: he photoexcitation and photodissociation of diatomic molecules by intense pulse lasers has been the subject of extensive investigations over the past decades. However, the usually employed theoretical framework neglects the coupling between the molecular rotational angular momentum (R) and the angular momentum of the electrons projected onto the molecular axis Ω=Λ+Σ, which results in the known Λ-doubling phenomenon in high-resolution electronic spectra of diatomic molecules. While neglecting this coupling is an excellent approximation in the weak-field or perturbative regime owing to the large mass difference between the rotating atoms and the electrons, the approximation breaks down for intense laser pulses because of the repeated Rabi cycling of the electronic transitions, which can have a significant effect on the rotational degrees of freedom of the molecule. By correcting the transition dipole matrix elements and introducing angular basis sets based on Wigner D functions, the conventional theoretical treatment is generalized to a universal description valid for both the weak- and strong-field regimes. The theoretical treatment developed here is applied to the ∣1Σ› to ∣1Π› transitions in diatomic systems. Our results reveal that, for field intensities resulting in about one Rabi cycling for extreme ultraviolet or x-ray transitions, the theoretical predictions by the conventional theoretical frame need to be corrected when considering observables such as the molecular alignment and the angular distribution of the photofragments.

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Держатели документа:
Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710119, Peoples R China.
Inst Appl Phys & Computat Math, POB 8009, Beijing 100088, Peoples R China.
Peking Univ, Ctr Appl Phys & Technol, Beijing 100084, Peoples R China.
Heidelberg Univ, Phys Chem Inst, Theoret Chem, Neuenheimer Feld 229, D-69120 Heidelberg, Germany.
Royal Inst Technol, Theoret Chem & Biol, S-10691 Stockholm, Sweden.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Liu, Yan Rong; Wu, Yong; Wang, Jian Guo; Vendrell, Oriol; Kimberg, V.; Кимберг, Виктор Валерьевич; Zhang, Song Bin
}
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Electronic and atomic structures of the isomers of endohedral and exohedral fullerene complexes with two lithium atoms / A. A. Kuzubov [et al.] // Phys. Solid State. - 2001. - Vol. 43, Is. 9. - P. 1794-1799, DOI 10.1134/1.1402242. - Cited References: 21 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
VIBRATION-ROTATION BANDS
   INFRARED ROTATION
   C-60
   BUCKMINSTERFULLERENE
   ION
Аннотация: The electronic structures of all the possible isomers of endohedral and exohedral C(60) fullerene complexes with two lithium atoms are theoretically investigated. It is found that the electronic structures of these compounds are characterized by an impurity filled-level state determining the band gap. The location of the impurity state and, correspondingly, the band gap of the exohedral fullerene complexes depend on the coordination mode and the distance between the alkali metal ions. A similar dependence is observed for the total energy of the exohedral fullerene complex under investigation. (C) 2001 MAIK "Nauka/ Interperiodica".

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Держатели документа:
Krasnoyarsk State Tech Univ, Krasnoyarsk, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН

Доп.точки доступа:
Kuzubov, A. A.; Кузубов, Александр Александрович; Avramov, P. V.; Аврамов, Павел Вениаминович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Varganov, S. A.; Tomilin, F. N.; Томилин, Феликс Николаевич
}
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Faraday effect in nanogranular Co-Sm-O films / V. S. Zhigalov [et al.] // Phys. Solid State. - 2005. - Vol. 47, Is. 6. - P. 1129-1133, DOI 10.1134/1.1946868. - Cited References: 13 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ROTATION
CO/SIO2
Аннотация: The Faraday effect (FE) was studied in Co-Sm-O composite films consisting of nanoparticles of metallic cobalt embedded in a samarium oxide dielectric matrix. The volume of the magnetic phase was similar to 60%. The FE spectral dependence for the condensates studied revealed a substantial change as compared to that for bulk cobalt samples, as well as for the films of nanocrystalline Co and CoSm films prepared in this study. An enhancement of the FE was also observed in the short-wavelength part of the optical spectrum. (c) 2005 Pleiades Publishing, Inc.

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Zhigalov, V. S.; Жигалов, Виктор Степанович; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Seredkin, V. A.; Середкин, Виталий Александрович; Frolov, G. I.; Фролов, Георгий Иванович; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич
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10.

Faraday-effect in MBE-grown magnetic multilayered Fe/Cu films / S. G. Ovchinnikov [и др.] // Fiz. Tverd. Tela. - 1993. - Vol. 35, Is. 3. - P. 602-605. - Cited References: 9 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
KERR ROTATION
ENHANCEMENT

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Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Kononov, V. P.; Кононов, Владимир Павлович; Popel, V. M.; Попёл, Виктор Михайлович; Khudyakov, A. E.; Худяков, Алексей Евгеньевич; Vasilyeva, E. P.; Васильева Е. П.; Zabluda, V. N.; Заблуда, Владимир Николаевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Staroverova, I. V.; Староверова, Ирина Валерьевна; Blekher, B. E.; Parshin, A. S.; Паршин, Анатолий Сергеевич
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