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1.


   
    Polarization rotation by cholesteric layers with tangential-conical boundary conditions / V. S. Sutormin, M. N. Krakhalev, I. V. Timofeev [et al.] // 18th International conference on ferroelectric liquid crystals : book of abstracts. - 2021. - Ст. P18. - Cited References: 2. - This work was supported by the Russian Science Foundation (No. 18-72-10036)

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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; "Polarity and Chirality in Soft Matter", International Conference on Ferroelectric Liquid Crystal(18 ; 2021 ; Sept. 6-10 ; Ljubljana, Slovenia)
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2.


   
    Periodic structures of linear defects in cholesteric layer with conical-planar anchoring under electric field / O. O. Prishchepa, M. N. Krakhalev, V. Yu. Rudyak [et al.] // 18th International conference on ferroelectric liquid crystals : book of abstracts. - 2021. - Ст. O25. - Cited References: 4. - This work was supported by the Russian Science Foundation (No. 18-72-10036)

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Доп.точки доступа:
Prishchepa, O. O.; Прищепа, Оксана Олеговна; Krakhalev, M. N.; Крахалев, Михаил Николаевич; Rudyak, V. Yu.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; "Polarity and Chirality in Soft Matter", International Conference on Ferroelectric Liquid Crystal(18 ; 2021 ; Sept. 6-10 ; Ljubljana, Slovenia)
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3.


   
    Chiral-selective Tamm plasmon polaritons / M.-Y. Lin, W.-H. Xu, R. G. Bikbaev [et al.] // Materials. - 2021. - Vol. 14, Is. 11. - Ст. 2788, DOI 10.3390/ma14112788. - Cited References: 46. - Thanks to Taiwan Semiconductor Research Institute (TSRI) and Center for Micro/Nano Science and Technology (CMNST) for the fabrication facility. The fabrication of the metasurfaces were also assisted by Yu-Lun Kuo, Mao-Guo Sun, and Chi-Yin Yang. We especially appreciate the support from Shie-Chang Jeng for supplying the CLC . - ISSN 1996-1944
Кл.слова (ненормированные):
metasurfaces -- Tamm plasmon polaritons -- chirality
Аннотация: Chiral-selective Tamm plasmon polariton (TPP) has been investigated at the interface between a cholesteric liquid crystal and a metasurface. Different from conventional TPP that occurs with distributed Bragg reflectors and metals, the chiral–achiral TPP is successfully demonstrated. The design of the metasurface as a reflective half-wave plate provides phase and polarization matching. Accordingly, a strong localized electric field and sharp resonance are observed and proven to be widely tunable.

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Публикация в сборнике Soft photonic crystals and metamaterials [Текст] / ed., pref.: I. V. Timofeev, W. Lee, 2022. - VII с. ; 127 с. (Введено оглавление)

Держатели документа:
Institute of Imaging and Biomedical Photonics, College of Photonics, National Chiao Tung University and National Yang Ming Chiao Tung University, 301 Gaofa 3rd Road, Tainan, 71150, Taiwan
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Photonic System, College of Photonics, National Chiao Tung University and National Yang Ming Chiao Tung University, 301 Gaofa 3rd Road, Tainan, 71150, Taiwan
Institute of Lighting and Energy Photonics, College of Photonics, National Chiao Tung University and National Yang Ming Chiao Tung University, 301 Gaofa 3rd Road, Tainan, 71150, Taiwan

Доп.точки доступа:
Lin, M. -Y.; Xu, W. -H.; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Yang, J. -H.; Li, C. -R.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Lee, W.; Chen, K. -P.
}
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4.


   
    Atomic Structure and Energetic Stability of Complex Chiral Silicon Nanowires / P. V. Avramov [et al.] // J. Phys. Chem. C. - 2010. - Vol. 114, Is. 35. - P. 14692-14696, DOI 10.1021/jp1016399. - Cited Reference Count: 36. - Гранты: This work was supported by a CREST (Core Research for Evolutional Science and Technology) grant in the Area of High Performance Computing for Multiscale and Multiphysics Phenomena from the Japan Science and Technology Agency (JST) and a collaborative RFBR-JSPS grant No. 09-02-92107-Phi. S.I. also acknowledges support by the Program for Improvement of Research Environment for Young Researchers from Special Coordination Funds for Promoting Science and Technology (SCF) commissioned by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan. L.Ch. acknowledges support by the Presidium of Russian Academy of Sciences (Program No. 27). - Финансирующая организация: CREST (Core Research for Evolutional Science and Technology); Japan Science and Technology Agency (JST); RFBR-JSPS [09-02-92107]; Special Coordination Funds for Promoting Science and Technology (SCF); Presidium of Russian Academy of Sciences [27] . - SEP 9. - ISSN 1932-7447
Рубрики:
DENSITY-FUNCTIONAL METHODS
   GROWTH

   EXCHANGE

   NANOHELICES

   NANOSPRINGS

Кл.слова (ненормированные):
Ab initio -- Atomic structure -- Chiral complexes -- Consecutive shifts -- DFT method -- Energetic stability -- HOMO-LUMO gaps -- Metastable structures -- Potential barriers -- Si atoms -- Silicon Nanowires -- Unit cell parameters -- Atoms -- Chirality -- Electronic structure -- Enantiomers -- Metastable phases -- Nanowires -- Stereochemistry -- Wire -- Crystal atomic structure
Аннотация: Atomic and electronic structure and energetic stability of newly proposed pentagonal and hexagonal chiral complex silicon nanowires (NWs) composed of five or six (I 10) oriented crystalline fragments were studied using the ab initio DFT method. The chirality of the wires was caused by consecutive shifts of each fragment by 1/5 or 1/6 of the wire unit cell parameter and rotations of 4 degrees and 3.3 degrees for achiral pentagonal or hexagonal wires, respectively. Chirality causes the HOMO-LUMO gap to reduce by 0.1 eV. Chiral silicon nanowires are found to be metastable structures with a 4,5 (kcal/mol)/Si atom potential barrier for reversible chiral achiral transformation.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Kyoto Univ, Fukui Inst Fundamental Chem, Sakyo Ku, Kyoto 6068103, Japan
Nagoya Univ, Inst Adv Res, Nagoya, Aichi 4648602, Japan
Nagoya Univ, Dept Chem, Nagoya, Aichi 4648602, Japan
Russian Acad Sci, Emanuel Inst Biochem Phys, Moscow 119334, Russia

Доп.точки доступа:
Avramov, P. V.; Аврамов, Павел Вениаминович; Minami, S.; Morokuma, K.; Irle, S.; Chernozatonskii, L.A.
}
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5.


    Gavrichkov, V. A.
    Lattice source for charge and spin inhomogeneity in 2D perovskite cuprates / V. A. Gavrichkov, S. I. Polukeev // Phys. B: Condens. Matter. - 2024. - Vol. 673. - Ст. 415457, DOI 10.1016/j.physb.2023.415457. - Cited References: 31. - We acknowledge the support of the Russian Science Foundation through grant RSF No. 22-22-00298 . - ISSN 0921-4526. - ISSN 1873-2135
Кл.слова (ненормированные):
Charge inhomogeneity -- Jahn–Teller (pseudo-) effect -- Doped 2D perovskite cuprates -- Phonon chirality
Аннотация: In the work we highlight the structural features of 2D perovskite cuprates (tilted CuO6 octahedra with different orientation with respect to spacer rocksalt layers), where sources of charge and spin inhomogeneity can be hidden. We used the impurity Anderson model with the Jahn–Teller(JT) local cells to show the charge inhomogeneity arises at any low doping concentration x, but disappears when the doping level exceeds threshold concentration xc, and the smaller the magnitudes xc, the larger the area of regions with JT pseudo effect. It is expected that spontaneous chiral symmetry breaking in the dynamic JT state of the stripe CuO2 layer as a whole can lead to the appearance of the goldstone phonon mode. As consequence, the giant thermal Hall effect could be observed in the 2D perovskite cuprates with CuO6 octahedra, rather than with CuO4 squares, e.g. in the Tl-based n layer cuprates or cuprates based on infinite-layer CaCuO2 structure.

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Держатели документа:
L. V. Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Polukeev, S. I.; Полукеев, Семен Игоревич; Гавричков, Владимир Александрович
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6.


   
    Magnetic ordering and chirality in multiferroic Dy1-xHoxMnO3 (x = 0.2) / A. N. Matveeva, I. A. Zobkalo, A. Sazonov [и др.] // Phys. B: Condens. Matter. - 2023. - Vol. 658. - Ст. 414821, DOI 10.1016/j.physb.2023.414821. - Cited References: 41. - The authors are grateful to D.A. Balaev for fruitful discussions and crystal growth management. This work was supported by the Russian Foundation for Basic Research grant # 19-52-12047, and DFG grant # SA3688/1-1, also by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects number 18-42-243024 and 20-42-243008. The neutron data were obtained at the instrument POLI operated jointly by RWTH Aachen University and Jülich Centre for Neutron Science within JARA cooperation . - ISSN 0921-4526. - ISSN 1873-2135
Кл.слова (ненормированные):
Neutron diffraction -- Crystal structure -- Multiferroics -- Magnetic structure -- Manganites
Аннотация: Effect of substitution Dy by Ho on the magneto-electric behavior of the compound Dy0.8Ho0.2MnO3 was investigated by the different methods of polarized and classical neutron diffraction and macroscopic methods. It is shown that substitution by Ho of 20% on the position of Dy do not change overall crystal symmetry of compound. It remains of Pbnm type down to the very low temperatures. Magnetic ordering, its temperature and field evolution was determined by the use of single crystal neutron diffraction and magnetization measurements. Chiral type of magnetic structure on Mn subsystem is confirmed below Tc ≈ 16 K. Using polarized neutron diffraction the 3-component character of rare earth magnetic ordering in Dy0.8Ho0.2MnO3 in contrast to DyMnO3 could be revealed. It was shown that doping by 20% Ho suppresses the spontaneous rare-earth ordering with its own propagation vector and provides the situation when two magnetic subsystems, manganese and rare earth ones have a coherent incommensurate spatial propagation. The influence of the external electric field on the magnetic chirality could be directly evidenced, proving strong magneto-electric coupling in multiferroic phase. The study of the electric polarization under similar temperatures and fields on the same samples provides the direct correlation between the results of the microscopic and macroscopic investigations.

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Держатели документа:
Petersburg Nuclear Physics Institute by B.P. Konstantinov of NRC «Kurchatov Institute», 188300, Gatchina, Russia
Institute of Crystallography, RWTH Aachen University and Jülich Centre for Neutron Science at Heinz Maier- Leibnitz Zentrum, Garching, Germany
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk, 660036, Russia
Siberian Federal University, Krasnoyarsk, 660041, Russia

Доп.точки доступа:
Matveeva, A. N.; Zobkalo, I. A.; Sazonov, A.; Freidman, A. L.; Фрейдман, Александр Леонидович; Semenov, S. V.; Семёнов, Сергей Васильевич; Kolkov, M. I.; Колков, Максим Игоревич; Terentjev, K. Yu.; Терентьев, Константин Юрьевич; Pavlovskiy, N. S.; Павловский, Николай Сергеевич; Shaykhutdinov, K. A.; Hutanu, V.
}
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7.


   
    Double-resolved beam steering by metagrating-based Tamm plasmon polariton / R. G. Bikbaev, D. N. Maksimov, K.-P. Chen, I. V. Timofeev // Materials. - 2022. - Vol. 15, Is. 17. - Ст. 6014, DOI 10.3390/ma15176014. - Cited References: 29. - This research was funded by the Russian Science Foundation (project no. 22-42-08003). This work was supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University and Ministry of Education and the Ministry of Science and Technology (111-2923-E-A49-001-MY3, 110-2221-E-A49-019-MY3, 109-2628-E-009-007-MY3) . - ISSN 1996-1944
Кл.слова (ненормированные):
metasurface -- metagratings -- tamm plasmon polaritons -- chirality
Аннотация: We consider Tamm plasmon polariton in a subwavelength grating patterned on top of a Bragg reflector. We demonstrate dynamic control of the phase and amplitude of a plane wave reflected from such metagrating due to resonant coupling with the Tamm plasmon polariton. The tunability of the phase and amplitude of the reflected wave arises from modulation of the refractive index of a transparent conductive oxide layer by applying the bias voltage. The electrical switching of diffracted beams of the ±1st order is shown. The possibility of doubling the angular resolution of beam steering by using asymmetric reflected phase distribution with integer and half-integer periods of the metagrating is demonstrated.

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Публикация в сборнике Soft photonic crystals and metamaterials [Текст] / ed., pref.: I. V. Timofeev, W. Lee, 2022. - VII с. ; 127 с. (Введено оглавление)

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Photonics Technologies, National Tsing Hua University, Hsinchu, 30013, Taiwan
Institute of Imaging and Biomedical Photonics, National Yang Ming Chiao Tung University, Tainan, 71150, Taiwan

Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Chen, K.-P.; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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8.


   
    Spectroscopy of f-f transitions, crystal-field calculations, and magnetic and quadrupole helix chirality in DyFe3(BO3)4 / M. N. Popova [et al.]. - Electronic text data // ArXiv. - 2016. - Ст. 1611.07092. - Cited References: 47. - This work was supported by the Russian Science Foundation (Grant No14-12-01033). I. A. G. thanks L. N. Bezmaternykh for useful comments concerning the crystal growth and the Russian Foundation for Basic Research for a financial support under Grant No 14-02-00307a.
Аннотация: Recently, quadrupole helix chirality and its domain structure was observed in resonant x-ray diffraction experiments on DyFe3(BO3)4 using circularly polarized x rays [T. Usui et al., Nature Materials 13, 611 (2014)]. We show that this effect can be explained quantitatively by calculating the quadrupole moments of the Dy3+ ions induced by the low-symmetry (C2) crystal-field (CF) component. In this work, the CF parameters for the Dy3+ ions in the P3121 (P3221) phase of DyFe3(BO3)4 are obtained from CF calculations based on the analysis of high-resolution temperature-dependent optical spectroscopy data. We also consider the helix chirality of the single-site magnetic susceptibility tensors of the Dy3+ ions in the paramagnetic P3121 (P3221) phase and suggest a neutron diffraction experiment to reveal it.

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Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, 108840 Moscow, Troitsk, Russia
Department of Physics, New Jersey Institute of Technology, 07102 Newark, New Jersey, USA
Kazan Federal University, 420008 Kazan, Russia
Kirensky Institute of Physics, Siberian Branch of RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Popova, M. N.; Chukalina, E. P.; Boldyrev, K. N.; Stanislavchuk, T. N.; Malkin, B. Z.; Gudim, I. A.; Гудим, Ирина Анатольевна
}
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9.


   
    High-resolution spectroscopy, crystal-field calculations, and quadrupole helix chirality of DyFe3(BO3)(4) / M. N. Popova [et al.] ; ed. E. A. Vinogradov [et al.] // XXV Congress on Spectroscopy. - 2017. - Vol. 132. - Ст. 03041. - (EPJ Web of Conferences), DOI 10.1051/epjconf/201713203041. - Cited References:2 . - ISSN 2100-014X
РУБ Spectroscopy

Аннотация: High-resolution polarized transmission spectra of DyFe3(BO3)(4) single crystals were investigated in broad spectral (10-23000 cm(-1)) and temperature (3.5-300 K) ranges. Energies of the dysprosium levels in the paramagnetic and antiferromagnetic phases were determined. On the basis of these data and preliminary calculations in the frameworks of the exchange-charge model, we determined the crystal-field and Dy-Fe exchange interaction parameters of the Dy3+ ions at sites with the point C-2 symmetry corresponding to the enantiomorphic P3(1)21 and P3(2)21 space groups. The values of electronic quadrupole moments of the Dy3+ ions were calculated, which enabled us to interpret results of the work [Usui et al., Nature Mater. 13, 611 (2014)] on the observation of domains of different quadrupole chirality in DyFe3(BO3)(4).

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Доп.точки доступа:
Popova, M. N.; Попова, Марина Николаевна; Malkin, B. Z.; Stanislavchuk, T. N.; Chukalina, E. P.; Boldyrev, K. N.; Болдырев, Кирилл Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Vinogradov, E.A. \ed.\; Naumov, A.V. \ed.\; Gladush, M.G. \ed.\; Karimullin, K.R. \ed.\; Congress on Spectroscopy(25 ; 2016 ; Oct ; 03-07 ; Troitsk)
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10.


   
    Single magnetic chirality in the magnetoelectric NdFe3((BO3)-B-11)(4) / M. . Janoschek [et al.] // Phys. Rev. B. - 2010. - Vol. 81, Is. 9. - Ст. 94429, DOI 10.1103/PhysRevB.81.094429. - Cited References: 55 . - ISSN 1098-0121
РУБ Physics, Condensed Matter
Рубрики:
NEUTRON-DIFFRACTION
   PHASE-TRANSITIONS

   SLOW-NEUTRONS

   CRYSTAL

   NDFE3(BO3)(4)

   EXTINCTION

   NUCLEAR

   ORDER

   MNSI

   ANTIFERROMAGNETS

Аннотация: We have performed an extensive study of single crystals of the magnetoelectric NdFe3 ((BO3)-B-11)(4) by means of a combination of single-crystal neutron diffraction and spherical neutron polarimetry. Our investigation did not detect significant deviations at low temperatures from space group R32 concerning the chemical structure. With respect to magnetic ordering our combined results demonstrate that in the commensurate magnetic phase below T-N approximate to 30 K all three magnetic Fe moments and the magnetic Nd moment are aligned ferromagnetically in the basal hexagonal plane but align antiferromagnetically between adjacent planes. The phase transition to the low-temperature incommensurate (IC) magnetic structure observed at T-IC approximate to 13.5 K appears to be continuous. By means of polarized neutron studies it could be shown that in the incommensurate magnetic phase the magnetic structure of NdFe3((BO3)-B-11)(4) is transformed into a long-period antiferromagnetic helix with single chirality. Close to the commensurate-incommensurate phase transition third-order harmonics were observed, which in addition indicate the formation of magnetic solitons.

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Держатели документа:
[Janoschek, M.
Fischer, P.
Schefer, J.
Roessli, B.
Pomjakushin, V.] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
[Janoschek, M.
Fischer, P.
Schefer, J.
Roessli, B.
Pomjakushin, V.] ETH, CH-5232 Villigen, Switzerland
[Janoschek, M.] Tech Univ Munich, Phys Dept E21, D-85748 Garching, Germany
[Meven, M.] Tech Univ Munich, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85748 Garching, Germany
[Petricek, V.] ASCR, Vvi, Inst Phys, Prague 18221 8, Czech Republic
[Petrakovskii, G.
Bezmaternikh, L.] RAS, SB, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Laboratory for Neutron Scattering, Paul Scherrer Institut and ETH Zurich, CH-5232 Villigen PSI, Switzerland
Physik Department E21, Technische Universitat Munchen, D-85748 Garching, Germany
Department of Physics, University of California, San Diego, San Diego, CA 92093-0354, United States
Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM II), Technische Universitat Munchen, D-85748 Garching, Germany
Institute of Physics, ASCR, V.v.i, Na Slovance 2, 182 21 Praha 8, Czech Republic
Institute of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Janoschek, M.; Fischer, P.; Schefer, J.; Roessli, B.; Pomjakushin, V.; Meven, M.; Petricek, V.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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