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    Spin-glass magnetic ordering in CoMgGaO2BO3 ludwigite / N. B. Ivanova [et al.] // Физ. низких температур. - 2012. - Т. 38, Вып. 2. - С. 214-217. - Библиогр.: 13 назв. - This work was supported by the Russian Foundation for Basic Research (project No. 09-02-00171-a), the Federal Agency for Science and Innovation (Rosnauka) (project No. MK-5632.2010.2), the Physics Division of the Russian Academy of Sciences, the program "Strongly Correlated Electrons" (project 2.3.1). . - ISSN 0132-6414. - ISSN 1816-0328
   Перевод заглавия: Спин-стекольное магнитное упорядочение в людвигите CoMgGaO2BO3
Рубрики:
AC Magnetic susceptibility
   DC magnetization
   Field cooled
   Flux methods
   Frequency dependent
   Magnetic system
   Magnetic transitions
   Needle shape
   Parent compounds
   Spin-glasses freezing
   Temperature dependencies
   Unit-cell volume
   Zero-field-cooled
   Cobalt
   Cobalt compounds
   Freezing
   Glass
   Magnetic susceptibility
   Magnetism
   Single crystals
   X-ray diffraction
   Spin glass
Кл.слова (ненормированные):
Spin-glass freezing -- Transition metal ludwigites
Аннотация: The single crystal needle shape samples of diamagnetically diluted cobalt ludwigite CoMgGaO2BO3 have been grown by the flux method. The results of x-ray diffraction and both dc and ac magnetic measurements are presented. The unit cell volume undergoes a noticable growth under dilution from 328.31 Å3 for the parent compound Co3O2BO3 to 345.46 Å3 for CoMgGaO2BO3. The temperature of magnetic transition is considerably lower for the latter compound (25 K against 43 Kfor Co3O2BO3). The dc magnetization temperature dependencies undergo the splitting of field cooled and zero-field cooled regimes and the ac magnetic susceptibility temperature dependencies are frequency dependent pointing out a possible spin-glass freezing in the magnetic system.

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Переводная версия Spin-glass magnetic ordering in CoMgGaO2BO3 ludwigite [Текст] / N. B. Ivanova [et al.] // Low Temp. Phys. : American Institute of Physics, 2012. - Vol. 38 No. 2.- P.172-174

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Platunov, M. S.; Платунов, Михаил Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Kazak, N. V.; Казак, Наталья Валерьевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Eremin, E. V.; Еремин, Евгений Владимирович; Vasiliev, A. D.; Васильев, Александр Дмитриевич
}
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Gorev, M. V.
Heat capacity study of PMN near fieldinduced phase transition / M. V. Gorev, V. S. Bondarev, K. S. Aleksandrov // Ferroelectrics. - 2007. - Vol. 360, Is. 1, Pt. 2. - P. 37-43, DOI 10.1080/00150190701515964. - Cited References: 11 . - ISSN 0015-0193
Кл.слова (ненормированные):
Field-induced phase transition -- Heat capacity -- PMN -- Field cooling -- Field model -- Field-induced phase transition -- Heat capacities -- Heat capacity measurements -- Single crystal wafers -- Temperature range -- Zero-field heating -- Electric fields -- Single crystals -- Specific heat -- Phase transitions
Аннотация: Heat capacity measurements were performed for a single crystal wafer of PMN in the temperature range of 170-250 K applying an electric field E = 3.0 kV/cm along the [111] direction. The heat capacity anomalies related to the phase transition at Tc = 210 K upon zero field heating after field cooling and at Tc = 223 K upon field cooling have been found. The results obtained are discussed together with the data of previous studies in the frame of the spherical random bondrandom field model.

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Доп.точки доступа:
Bondarev, V. S.; Бондарев, Виталий Сергеевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Горев, Михаил Васильевич; International Seminar on Ferroelactic Physics(5 ; 2006 ; Sept. ; 10-13 ; Voronezh)
}
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Reflective power limiter for X-band with HTSC switching element / B. A. Belyaev [et al.] // IEEE Trans. Appl. Supercond. - 2016. - Vol. 26, Is. 6. - Ст. 1500506, DOI 10.1109/TASC.2016.2530700. - Cited References:23 . - ISSN 1051-8223. - ISSN 1558-2515

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
Superconducting transmission-line
Кл.слова (ненормированные):
Microstrip structure -- microwave (MW) -- power limiter (PL) -- transmission -- zero
Аннотация: This paper presents a new type of power limiter (PL), using superconducting-to-normal state phase transition in high-temperature superconductor. The presented device differs from the existing ones mainly in the reflective principle of its operation. In fact, the PL is a three-resonator microstrip filter, whose resonators are configured and arranged in such a manner that coupling coefficient between the outer resonators is equal to zero and the inner one has a gap in the middle section shunted by a high-temperature superconducting (HTS) film element. In small-signal mode, the HTS element is in low-loss state, and the device is essentially a three-pole filter with low transmission loss. When the level of the signal exceeds the threshold, the HTS element transits to the high-loss state, and the Q-factor of the inner resonator falls, breaking the coupling in the structure. This leads to the corresponding increase in the PL's transmission loss due to reflection. The higher the level of incoming power, the more the Q-factor falls. The PL operating frequency is 8 GHz with 8.5% fractional bandwidth. It remains operable up to 40 W of input power, providing 38-dB limitation.

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660074, Russia.

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Govorun, I. V.; Говорун, Илья Валерьевич; Leksikov, Al. A.; Лексиков, Александр Александрович; Serzhantov, A. M.; Сержантов, Алексей Михайлович; Leksikov, An. A.; Лексиков, Андрей Александрович
}
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    Structural, electrical and magnetic study of manganites Pr0.6Sr0.4MnO3 thin films / D. S. Neznakhin [et al.] // J. Phys. Conf. Ser. - 2016. - Vol. 690, Is. 1, DOI 10.1088/1742-6596/690/1/012002. - Cited References: 20. - The work was supported partly by RFBR, grant №14-02-01211, Grant of President of Russian Federation №NSh-2886.2014.2, and by The Ministry of Education and Science of the Russian Federation, project №2582. . - ISSN 1742-6588
   Перевод заглавия: Структурные, электрические и магнитные исследования тонких пленок манганита Pr0.6Sr0.4MnO3
Кл.слова (ненормированные):
Magnetic materials -- Magnetization -- Manganese oxide -- Nanoelectronics -- Nanostructures -- Oxide films -- Field dependence -- Magnetization temperature curves -- Polycrystalline phase -- Polycrystalline pr -- Resistivity dependence -- Shape characteristics -- Structural parameter -- Zero-field cooling -- Thin films
Аннотация: Thin polycrystalline Pr0.6Sr0.4MnO3 films were grown on the Y stabilized zirconium oxide substrates by magnetron sputtering using RF power and off-axis sputtering scheme with double cathodes. Only one polycrystalline phase with structural parameters consistent with that for the corresponding bulk sample was revealed in the films. Electric resistivity dependence on temperature demonstrates the shape characteristic for the substances with the Mott transition. The difference between magnetization temperature curves measured in the zero field cooling and field cooling modes was revealed. Magnetization field dependences were presented by the hysteresis loops changing their form with temperature. © Published under licence by IOP Publishing Ltd.

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Доп.точки доступа:
Neznakhin, D. S.; Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Molokeev, M. S.; Молокеев, Максим Сергеевич; Semenov, S. V.; Семёнов, Сергей Васильевич; Russian Youth Conference on Physics of Semiconductors and Nanostructures, Opto- and Nanoelectronics(St. Petersburg)(17 ; 23 - 27 Nov. 2015)
}
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Nikolaev, S. V.
Cluster perturbation theory in Hubbard model exactly taking into account the short-range magnetic order in 2 x 2 cluster / S. V. Nikolaev, S. G. Ovchinnikov // J. Exp. Theor. Phys. - 2010. - Vol. 111, Is. 4. - P. 635-644, DOI 10.1134/S1063776110100146. - Cited References: 23. - The authors thank V. V. Val'kov for fruitful discussions of this work. This research was supported financially by the Russian Foundation for Basic Research (project nos. 09-02-90723-mob_st and 09-02-00127) and by program no. 5.7 of the Presidium of the Russian Academy of Sciences and integration project no. 40 of the Siberian Branch and Ural Division of the Russian Academy of Sciences. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
INFINITE DIMENSIONS
SYSTEMS
STATE
Кл.слова (ненормированные):
Antiferromagnetic orders -- Characteristic energy -- Cluster perturbation theories -- Coulomb repulsions -- Density of state -- Dynamic mean field theories -- Eigenvalue problem -- Exact diagonalization -- Excited levels -- Finite temperatures -- Half-filling -- Hubbard -- Metal insulator transition temperature -- Nearest neighbors -- Numerical solution -- Pseudo-gap -- Quasiparticle spectrum -- Shadow zone -- Short-range magnetic orders -- Temperature evolution -- Zero temperatures -- Antiferromagnetism -- Eigenvalues and eigenfunctions -- Fermi level -- Hubbard model -- Mean field theory -- Metal insulator boundaries -- Perturbation techniques -- Semiconductor insulator boundaries -- Statistical mechanics -- Metal insulator transition
Аннотация: The cluster perturbation theory is presented in the 2D Hubbard model constructed using X operators in the Hubbard-I approximation. The short-range magnetic order is taken into account by dividing the entire lattice into individual 2 x 2 clusters and solving the eigenvalue problem in an individual cluster using exact diagonalization taking into account all excited levels. The case of half-filling taking into account jumps between nearest neighbors is considered. As a result of numerical solution, a shadow zone is discovered in the quasiparticle spectrum. It is also found that a gap in the density of states in the quasiparticle spectrum at zero temperature exists for indefinitely small values of Coulomb repulsion parameter U and increases with this parameter. It is found that the presence of this gap in the spectrum is due to the formation of a short-range antiferromagnetic order. An analysis of the temperature evolution of the density of states shows that the metal-insulator transition occurs continuously. The existence of two characteristic energy scales at finite temperatures is demonstrated, the larger scale is associated with the formation of a pseudogap in the vicinity of the Fermi level, and the smaller scale is associated with the metal-insulator transition temperature. A peak in the density of states at the Fermi level, which is predicted in the dynamic mean field theory in the vicinity of the metal-insulator transition, is not observed.

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Держатели документа:
[Nikolaev, S. V.
Ovchinnikov, S. G.] Russian Acad Sci, Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
[Nikolaev, S. V.] Dostoevsky State Univ, Omsk 644077, Russia
[Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Dostoevsky State University, Omsk 644077, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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The magnetoelastic effect in CoxMn1-xS solid solutions / S. S. Aplesnin [et al.] // Solid State Commun. - 2010. - Vol. 150, Is. 13-14. - P. 564-567, DOI 10.1016/j.ssc.2010.01.009. - Cited References: 13. - This work was supported by the Russian Foundation for Basic Research projects no. 08-02-00364-a, no. 08-02-90031, no. F08037, F08-229, and no. 09-02-00554-a. . - ISSN 0038-1098

РУБ Physics, Condensed Matter
Рубрики:
YVO3 SINGLE-CRYSTAL
   SPIN-STATE
   TRANSITION
   TRANSPORT
   PHYSICS
   LACOO3
Кл.слова (ненормированные):
Semiconductors -- X-ray scattering -- Galvanomagnetic effects -- Thermal expansion -- Semiconductors -- X-ray scattering -- Galvanomagnetic effects -- Thermal expansion -- Semiconductors -- X-ray scattering -- Coefficient of thermal expansion -- Magnetoelastic effects -- Orbital ordering -- Temperature hysteresis -- Temperature range -- Zero magnetic fields -- Crystallization -- Electric resistance -- Magnetic field effects -- Magnetoresistance -- Manganese -- Manganese compounds -- Neon -- Organic polymers -- Scattering -- Semiconductor quantum dots -- Solid solutions -- Solidification -- Thermal stress -- X ray scattering -- Thermal expansion
Аннотация: The magnetization of cation-substituted CoxMn(1-x)S sulfides upon cooling in zero magnetic field and in a field in the temperature range 4-300 K has been measured and the resistance versus magnetic field (up to 10 kOe) dependences have been obtained. Magnetoresistance and temperature hysteresis of magnetization versus prehistory are found at the magnetic field H < 0.1 T and at T < 240 K. The interrelation between the magnetic and elastic subsystems of the CoxMn1-xS solid solutions has been established. A jump in the coefficient of thermal expansion is observed at the Neel temperature. The features of the physical properties are explained by orbital ordering. (C) 2010 Elsevier Ltd. All rights reserved.

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Держатели документа:
[Aplesnin, S. S.
Ryabinkina, L. I.
Romanova, O. B.
Har'kov, A. M.] MF Reshetneva Aircosm Siberian State Univ, Krasnoyarsk 660014, Russia
[Gorev, M. V.
Balaev, A. D.
Eremin, E. V.
Bovina, A. F.] Russian Acad Sci, KSC Siberian Branch, Ctr Shared, Krasnoyarsk 660036, Russia
КНЦ СО РАН
M.F. Reshetneva Aircosmic Siberian State University, Krasnoyarsk, 660014, Russian Federation
Center of shared using KSC Siberian branch, Russian Academy Science, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Romanova, O. B.; Романова, Оксана Борисовна; Har'kov, A. M.; Gorev, M. V.; Горев, Михаил Васильевич; Balaev, A. D.; Балаев, Александр Дмитриевич; Eremin, E. V.; Еремин, Евгений Владимирович; Bovina, A. F.; Бовина, Ася Федоровна
}
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Resonant inelastic x-ray scattering in electronically quasi-zero-dimensional CuB2O4 / J. N. Hancock [et al.] // Phys. Rev. B. - 2009. - Vol. 80, Is. 9. - Ст. 92509, DOI 10.1103/PhysRevB.80.092509. - Cited References: 21. - We would like to acknowledge valuable conversations with J. P. Hill, S. Johnston, Y.-J. Kim, B. Moritz, B. S. Shastry, and F. Vernay. The synchrotron radiation experiments were performed under the Common Use Facility Programme of JAEA. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, and has benefitted from the RIXS collaboration supported by the Computational Materials Science Network (CMSN) program of the Division of Materials Science and Engineering, Basic Energy Sciences, U.S. Department of Energy under grant number DE-FG02-08ER46540. This work was supported by the DOE under Contract No. DE-AC02-76SF00515 and by the NSF under Grant No. DMR-0705086. . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
COPPER METABORATE
Кл.слова (ненормированные):
band structure -- copper compounds -- X-ray scattering
Аннотация: We present a resonant inelastic scattering (RIXS) study using of CuB2O4, which contains a lattice of CuO4 plaquettes electronically isolated by B+3 ions. The observed Cu K-edge spectra show a small number of well-separated features, and the simple electronic structure of CuB2O4 allows us to explore RIXS phenomenology. We find a low-energy feature that cannot be attributed to the same charge-transfer excitation discussed in other cuprates and is likely a d -> d transition thought to be forbidden under common considerations of K-edge RIXS.

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Держатели документа:
[Hancock, J. N.
Devereaux, T. P.
Greven, M.] Dept Photon Sci, Stanford, CA 94309 USA
[Hancock, J. N.
Devereaux, T. P.
Greven, M.] Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA
[Chabot-Couture, G.
Greven, M.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
[Li, Y.] Stanford Univ, Dept Phys, Stanford, CA 94305 USA
[Petrakovskii, G. A.] Russian Acad Sci, Siberian Div, Kirenskii Inst Phy, Krasnoyarsk 660036, Russia
[Ishii, K.
Jarrige, I.
Mizuki, J.] Japan Atom Energy Agcy, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan
ИФ СО РАН
Department of Photon Science, Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309, United States
Department of Applied Physics, Stanford University, Stanford, CA 94305, United States
Department of Physics, Stanford University, Stanford, CA 94305, United States
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Synchrotron Radiation Research Center, Japan Atomic Energy Agency, Hyogo 679-5148, Japan

Доп.точки доступа:
Hancock, J. N.; Chabot-Couture, G.; Li, Y.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Ishii, K.; Jarrige, I.; Mizuki, J.; Devereaux, T. P.; Greven, M.; U.S. Department of Energy [DE-AC02-05CH11231]; Computational Materials Science Network (CMSN); Division of Materials Science and Engineering; Basic Energy Sciences; DOE [DE-AC02-76SF00515]; NSF [DMR-0705086]
}
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Deich, L. I.
Magnetoelastic resonance in random-nonhomogeneous ferromagnetics with zero medium magnetostriction / L. I. Deich, V. A. Ignatchenko // Zhurnal Eksperimentalnoi Teor. Fiz. - 1995. - Vol. 107, Is. 3. - P. 842-854. - Cited References: 14 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
amorphous ferromagnets
   spin-waves
   magnetization
   fluctuations
   saturation

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Доп.точки доступа:
Ignatchenko, V. A.; Игнатченко, Вальтер Алексеевич; Дейч, Лев Исаакович
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    A set of Majorana zero modes on the triangular lattice in the coexistence phase of superconductivity and noncollinear magnetic order / V. V. Val'kov [et al.] // The 15th Days of the Condensed Matter (JMC'15) : abstracts. - 2016. - P. 45. - References: 4. - This study was funded by RFBR in part according to the research project No. 16-02-00073-a. A.O.Z. is grateful for support of the Grant of the President of the Russian Federation SP-1370.2015.5
   Перевод заглавия: Набор майорановских нулевых мод на треугольной решетке в фазе сосуществования сверхпроводимости и неколлинеарного магнитного порядка

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Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Zlotnikov, A. O.; Злотников, Антон Олегович; Fedoseev, A. D.; Федосеев, Александр Дмитриевич; Shustin, M. S.; Days of the Condensed Matter University of Bordeaux(15 ; 22-26 Aug. 2016 ; Bordeaux, France); Journées de la matiére condensée(15 ; 2016 ; Aug. ; 22-26 ; Bordeaux, France)
}
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10.

    Near-zero thermal expansion and high ultraviolet transparency in a borate crystal of Zn4B6O13 / X. X. Jiang [et al.] // Adv. Mater. - 2016. - Vol. 28, Is. 36. - P. 7936-7940, DOI 10.1002/adma.201601816. - Cited References:38. - The authors acknowledge Zhuohong Yin for useful discussion and Dr. Siyang Luo for the help in crystal fabrication. This work was supported by the Special Foundation of the Director of Technical Institute of Physics and Chemistry (TIPC), the National Scientific Foundations of China (Grant 11474292 and 51401224), and China "863" project (No. 2015AA034203). . - ISSN 0935-9648. - ISSN 1521-4095
   Перевод заглавия: Нулевое тепловое расширение и высокая ультрафиолетовая прозрачность в борате Zn4B6O13

РУБ Chemistry, Multidisciplinary + Chemistry, Physical + Nanoscience
Рубрики:
ZN4O(BO2)6
   TETRAHEDRA
   BEHAVIOR
   RANGE
Аннотация: Intrinsic isotropic near-zero thermal expansion is discovered in borate crystal Zn4B6O13 with high transparency in the ultraviolet region. First-principles calculations demonstrate that the very low thermal expansion originates mainly from the invariability of the solid [B24O48] truncated octahedra that are fixed by the [Zn4O13] clusters in the ZBO structure.

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Держатели документа:
Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Ctr Crystal R&D, Beijing 100190, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
RAS, Lab Crystal Phys, Kirensky Inst Phys, SB, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China.
Chinese Acad Sci, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China.
Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China.
Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China.

Доп.точки доступа:
Jiang, Xingxing; Molokeev, M. S.; Молокеев, Максим Сергеевич; Gong, Pifu; Yang, Y.i.; Wang, Wei; Wang, Shuaihua; Wu, Shaofan; Wang, Yingxia; Huang, Rongjin; Li, Laifeng; Wu, Yicheng; Xing, Xianran; Lin, Zheshuai; Special Foundation of the Director of Technical Institute of Physics and Chemistry (TIPC); National Scientific Foundations of China [11474292, 51401224]; China "863" project [2015AA034203]
}
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