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Kolovsky, A. R.
Wannier-Stark states and topological phase transitions in tilted two-dimensional bipartite lattices / A. R. Kolovsky // Humboldt Kolleg. Controlling quantum matter: From ultracold atoms to solids : conference materials. - 2018

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Доп.точки доступа:
Коловский, Андрей Радиевич; Controlling quantum matter: From ultracold atoms to solids, Humboldt Kolleg(2018 ; July 29 - August 2 ; Vilnius, Lithuania)Vilnius University; Lithuanian Physical Society
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    Vorotynov, A. M.
    Uniaxial and basal plane anisotropy caused by Cr2+ impurity ions in CrBO3 crystals / A. M. Vorotynov, S. G. Ovchinnikov, V. V. Rudenko // J. Phys. Chem. Solids. - 2018. - Vol. 123. - P. 389-392, DOI 10.1016/j.jpcs.2018.08.016. - Cited References: 14 . - ISSN 0022-3697
   Перевод заглавия: Одноосная и базисная анизотропия вызванная примесью ионов Cr2+ в кристаллах CrBO3
Кл.слова (ненормированные):
Anisotropy -- Chromium compounds -- Crystal impurities -- Ions -- Single crystals
Аннотация: IIn this study, the uniaxial and basal anisotropy governed by Cr2+ impurity ions was treated based on the Cr2+– BO3 3− ion vacancy model using single ion approximation. The anomalous behavior of the basal anisotropy at low temperatures was predicted.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Russian Federation

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Rudenko, V. V.; Руденко, Валерий Васильевич; Воротынов, Александр Михайлович
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    Tuning of photoluminescence and local structures of substituted cations in xSr2Ca(PO4)2-(1 - x)Ca10Li(PO4)7:Eu2+ phosphors / M. Chen [et al.] // Chem. Mater. - 2017. - Vol. 29, Is. 3. - P. 1430-1438, DOI 10.1021/acs.chemmater.7b00006. - Cited References: 37. - The present work was supported by the National Natural Science Foundation of China (Grants 91622125 and 51572023), Natural Science Foundations of Beijing (2172036), and Fundamental Research Funds for the Central Universities (FRF-TP-15-003A2). . - ISSN 0897-4756
   Перевод заглавия: Управляемая люминесценция и локальная структура замещаемых катионов в люминофоре xSr2Ca(PO4)2-(1-x)Ca10Li(PO4)7:Eu2+
Кл.слова (ненормированные):
Calcium -- Energy transfer -- Europium -- Light emission -- Lithium -- Luminescence -- Phosphors -- Photoionization -- Photoluminescence -- Single crystals -- Composition ranges -- Crystal-field splitting -- Luminescence measurements -- Non-linear variation -- Photoionization process -- Polyhedra distortion -- Rare earth doped solids -- Temperature dependent -- Solid solutions
Аннотация: Local structure modification in solid solution is an essential part of photoluminescence tuning of rare earth doped solid state phosphors. Herein we report a new solid solution phosphor of Eu2+-doped xSr2Ca(PO4)2-(1 - x)Ca10Li(PO4)7 (0 ≤ x ≤ 1), which share the same β-Ca3(PO4)2 type structure in the full composition range. Depending on the x parameter variation in xSr2Ca(PO4)2-(1 - x)Ca10Li(PO4)7:Eu2+, the vacancies generated in the M(4) site enable the nonlinear variation of cell parameters and volume, and this increases the magnitude of M(4)O6 polyhedra distortion. The local structure modulation around the Eu2+ ions causes different luminescent behaviors of the two-peak emission and induces the photoluminescence tuning. The shift of the emission peaks in the solid solution phosphors with different compositions has been discussed. It remains invariable at x ≤ 0.5, but the red-shift is observed at x > 0.5 which is attributed to combined effect of the crystal field splitting, Stokes shift, and energy transfer between Eu2+ ions. The temperature-dependent luminescence measurements are also performed, and it is shown that the photoionization process is responsible for the quenching effect.

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Держатели документа:
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
State Key Laboratory of Tribology, Tsinghua University, Beijing, China

Доп.точки доступа:
Chen, M.; Xia, Z.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Wang, T.; Liu, Q.
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Kveglis, L. I.
The self-organization of tetrahedrally close-packed structures in magnetic nanocrystalline Tb-Fe and Co-Pd films / L. I. Kveglis, A. V. Kuzovnikov, I. V. Timofeev ; ed.: BM Darinskii, , BM Darinsk // Mechanical spectroscopy III: Mechanical spectroscopy and relaxation phenomena IN SOLIDS. Ser. Solid state phenomena : Trans tech publications LTD, 2006. - Vol. 115. - P. 267-273. - Cited References: 19 . - ISBN 1012-0394. - ISBN 3-908451-24-8

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter + Spectroscopy
Рубрики:
AMORPHOUS FILMS
Кл.слова (ненормированные):
dissipative structures -- explosive crystallization -- thermal conductivity -- Tb-Fe films -- Co-Pd films
Аннотация: The self-organization of an atomic structure in Tb30Fe70 and Co50Pd50 films possessing of high values of the perpendicular magnetic anisotropy (PMA) constant (K perpendicular to similar to 10(6) erg/cm(3)) is investigated by transmission electron microscopy. The crystallization of the films is realized in an explosive way with formation of different dissipative structures from the initial nanocrystalline state. In present work the structural model of a thin film in mezzo-scale and the correlation of a structure with magnetic properties are discussed.

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Доп.точки доступа:
Kuzovnikov, A. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Darinskii, B. M. \ed.\; International Conference on Mechanical Spectroscopy and Relaxation Phenomena in Solids (3 ; 2006 ; Cracow, Poland)
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The role of strong electron correlations in determination of band structure and charge distribution of transition metal dihalide monolayers / E. A. Kovaleva [et al.] // J. Phys. Chem. Solids. - 2019. - Vol. 134. - P. 324-332, DOI 10.1016/j.jpcs.2019.05.036. - Cited References: 44. - This work was supported by the government contract of the Ministry of Education and Science of the Russian Federation, Russia to Siberian Federal University (Grant No. 16.1455.2017/PCh ) and Russian Foundation for Basic Research (RFBR), Russia (Grant No. 16-32-60003 mol_a_dk), Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project: “Quantum chemical modeling of Bychkov-Rashba interfaces based on transition metal compounds and nanoscaled organic fragments” (Project No. 18-43-243011). The authors would like to thank Joint Supercomputer Center of RAS , Moscow; Center of Equipment for Joint Use of Siberian Federal University , Krasnoyarsk; and Information Technology Center, Novosibirsk State University for providing the access to their supercomputers. N.S.M. acknowledges the financial support of the RFBR , through the research project No. 16-32-60003 mol_a_dk. E.A. Kovaleva is grateful to the Foundation for Assistance to Small Innovative Enterprises (FASIE), Russia (Project no. 0033639 ). W.B. and P.A. gratefully acknowledge the financial support of National Research Foundation of Republic of Korea under the Grant No. NRF-2017R1A2B4004440. . - ISSN 0022-3697
Кл.слова (ненормированные):
Transition metal dihalides -- Monolayers -- DFT -- Hubbard correction -- Band structure
Аннотация: Electronic structure and magnetic properties of the family of first-row transition metal dihalides (TMHal2, TM = V, Cr, Mn, Fe, Co, Ni; H = Br, I) monolayers were studied by means of density functional theory. Strong electron correlations were taken into account by implementing Hubbard U correction in a simplified scheme proposed by Dudarev et al. (Ueff). Ueff correction essentially affects electronic structure of TMHal2 widening the band gap and witnessing their highly spin-polarized nature. Two different ligand orientations namely, H and T configurations of monolayers were considered. Unlike others, FeHal2 monolayers tend to form H structure when Ueff correction is included. © 2019 Elsevier Ltd

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Держатели документа:
Siberian Federal University, 79 Svobodny Pr., Krasnoyarsk, 660041, Russian Federation
Kyungpook National University, 80 Daehakro, Bukgu, Daegu, 41566, South Korea
Kirensky Institute of Physics, FRC KSC SB RAS, 50 Academgorodok, Krasnoyarsk660036, Russian Federation
Tomsk State University, 36 Lenin Prospekt, Tomsk, 634050, Russian Federation

Доп.точки доступа:
Kovaleva, E. A.; Melchakova, I.; Mikhaleva, N. S.; Tomilin, F. N.; Томилин, Феликс Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Baek, W.; Pomogaev, V. A.; Avramov, P. V.; Аврамов, Павел Вениаминович; Kuzubov, A. A.
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The p-T phase diagram of ammonium hexafluoroaluminate / M. V. Gorev [et al.] // J. Phys.: Condens. Matter. - 2002. - Vol. 14, Is. 25. - P. 6447-6453, DOI 10.1088/0953-8984/14/25/312. - Cited References: 17 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
NUCLEAR MAGNETIC-RESONANCE
   TRANSITIONS
   MOTIONS
   F-19
   H-1
Кл.слова (ненормированные):
Entropy -- Hydrostatic pressing -- Mathematical models -- Order disorder transitions -- Phase diagrams -- Specific heat of solids -- Ammonium hexafluoroaluminate -- Crolite -- Elpasolite -- Ammonium compounds
Аннотация: The heat capacity and the effect of hydrostatic pressure on structural phase transitions in ammonium hexafluoroaluminate, (NH4)(3)AlF6, have been studied. Two heat capacity anomalies have been found with maxima at T-1 = 218.5 +/- 0.5 K and T-2 = 179 +/- 2 K. Respective entropy changes of phase transitions are DeltaS(1) = 15.3 +/- 0.5 J mol(-1) K-1 and DeltaS(2) = 2.5 +/- 0.5 J mol(-1) K-1. It is shown that the p-T phase diagram of this compound is rather complex and contains a triple point (p(tp) = 0.12 GPa, T-tp = 221 K) and high-pressure phase. The mechanism of transformations and generalized p-T phase diagram for compounds of the (NH4)(3)(MF6)-F-III family are discussed within the framework of the rotational order-disorder model.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France
ИФ СО РАН
L. V. Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Institut de Chimie de la Matiere Condensee de Bordeaux, 33608 Pessac, France

Доп.точки доступа:
Gorev, M. V.; Горев, Михаил Васильевич; Flerov, I. N.; Флёров, Игорь Николаевич; Tressaud, A.; Durand, E.
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The effect of copper and iron adsorption on the catalytic performance of alumina nanofiber / nanodiamond composite in sensing applications / N. O. Ronzhin, E. D. Posokhina, E. V. Mikhlina [et al.] // J. Phys. Chem. Solids. - 2022. - Vol. 167. - Ст. 110785, DOI 10.1016/j.jpcs.2022.110785. - Cited References: 68. - This work is supported by the Russian Foundation for Basic Research, Project 18–29–19078. The authors would like to express their special thanks to Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS» for providing the equipment to ensure the accomplishment of this project . - ISSN 0022-3697
Кл.слова (ненормированные):
Nanodiamonds -- Alumina nanofibers -- Indicator system -- Copper ions -- Iron ions -- Phenol detection
Аннотация: Phenolic compounds are common environmental pollutants, which are used in many industries and contaminate water environment due to industrial wastewater discharge. Presently, there is an increasing demand for the development and improvement of inexpensive, easy-to-use analytical tools for in-situ detection of phenolic compounds. In this work, we investigate the effect of adsorption of Cu2+ and Fe2+ ions on the catalytic activity of a composite material based on alumina nanofibers (ANF) and detonation nanodiamonds (DND) in the co-oxidation of phenols with 4-aminoantipyrine in the presence of hydrogen peroxide. We have found more than two-fold increase of the catalytic activity for ANF + DND + Cu composite, while the activity of ANF + DND + Fe composite is found to decrease by several times in comparison with the original ANF + DND material. The results of FTIR analysis indicate that the adsorption of iron ions occurs with the formation of hydroxide surface groups and hydrogen bonds, which apparently block their catalytic activity in the Fenton redox cycle. The higher catalytic performance of AND + DND composite functionalized with copper ions makes it possible to detect two times lower concentrations of analytes (phenol and 4-chlorophenol) in comparison with the original composite. It is shown that the AND + DND + Cu composite provides a linear yield of the co-oxidation reaction product in a wide range of analyte concentrations (0.25–100 μM for phenol and 0.5–25 μM for 4-chlorophenol). Model experiments demonstrate the applicability of copper-functionalized composite as a reusable sensor for the determination of phenol in aqueous samples.

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Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok 50/50, Krasnoyarsk, 660036, Russian Federation
Institute of Computational Modelling SB RAS, Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation
Kirensky Institute of Physics SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Federal Research Center KSC SB RAS, Akademgorodok 50/38, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny 79, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Ronzhin, N. O.; Posokhina, E. D.; Mikhlina, E. V.; Shestakov, N. P.; Шестаков, Николай Петрович; Nemtsev, I. V.; Немцев, Иван Васильевич; Bondar, V. S.; Ryzhkov, I. I.
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Lundin, A. G.
The dipolar fluctuation spectrum and the shape of the wings of nuclear-magnetic-resonance absorption-spectra in solids / A. G. Lundin, A. V. Makarenko, V. E. Zobov // J. Phys.: Condens. Matter. - 1990. - Vol. 2, Is. 50. - P. 10131-10145, DOI 10.1088/0953-8984/2/50/017. - Cited References: 24 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
CROSS RELAXATION
Аннотация: A theoretical approach providing the shape of the spectrum of dipolar fluctuations (Fourier transform of the longitudinal component of magnetization) and shape of the wings of NMR absorption in condensed matter has been elaborated. It is shown that the spectral contours are exponentials with the same decay constant. The results obtained explain for the first time the known experimental data and establish a connection between two groups of different experiments. The theoretical prediction is in good agreement with experimental results.

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Держатели документа:
LV KIRENSKY PHYS INST,SIBERIAN BRANCH,KRASNOYARSK 660036,USSR
ИФ СО РАН

Доп.точки доступа:
Makarenko, A. V.; Zobov, V. E.; Зобов, Владимир Евгеньевич; Лундин, Арнольд Геннадьевич
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    Mironov, V. L.
    Temperature dependent dielectric model at 1.4 GHz for an agricultural soil thawed and frozen / V. L. Mironov, A. Yu. Karavaysky // Int. Sib. Conf. on Control and Communicat. (SIBCON 2015) : Proceedings : IEEE-Institute Electrical and Electronics Engineers, 2015. - P. 1-4, DOI 10.1109/SIBCON.2015.7147092. - Cited References:9
   Перевод заглавия: Температурно зависимая диэлектрическая модель на частоте 1,4 ГГц для талой и мерзлой сельскохозяйственной почвы
Кл.слова (ненормированные):
agricultural soil -- dielectric model -- moisture -- remote sensing -- temperature -- thawed and frozen soil -- Agriculture -- Frozen soils -- Mixing -- Moisture -- Refractive index -- Remote sensing -- Soil moisture -- Soils -- Temperature -- Thawing -- Agricultural soils -- Complex refractive index -- Dielectric measurements -- Dielectric modeling -- Measurements of -- Mixing models -- Soil solids -- Temperature dependent -- Soil surveys
Аннотация: A mono-frequency dielectric model for the agricultural soil both thawed and frozen has been developed. The model is based on the soil dielectric measurements carried out in the ranges of volumetric moisture from 0,03 to 0,51 cm3/ cm3, dry soil density from 1.12 to 1.64 g/cm3, and temperature from -30 to 25°C (heating run), at the frequency of 1.4 GHz used in the SMOS mission. To fit the results of measurements of the soil complex refractive index (CRI) as a function of soil moisture, the refractive mixing model was applied. As a result, the parameters of the refractive mixing model linked to soil solids, as well as the bound, transient, and free soil water components were derived as a function of temperature. The error of the proposed dielectric model was shown to be in the order of the dielectric measurement error itself. © 2015 IEEE.

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Доп.точки доступа:
Karavaisky, A. Yu.; Каравайский, Андрей Юрьевич; Миронов, Валерий Леонидович; International Siberian Conference on Control and Communications(11 ; 2015 ; May 21-23 ; Omsk)
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10.

Stability of the superconducting d-wave pairing towards the Coulomb repulsions in cuprate superconductors / V. V. Val'kov [и др.] // VI International symposium on strong nonlinear vibronic and electronic interactions in solids : book of abstracts . - 2018. - P. 33

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Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Korovushkin, M. M.; Коровушкин, Максим Михайлович; Barabanov, A. F.; International symposium on strong nonlinear vibronic and electronic interactions in solids(6 ; 2018 ; April 28-May 1 ; Tartu, Estonia)
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11.

Specific heat of YFe3(BO3)(4), Y0.5Gd0.5Fe3(BO3)(4), and GdFe3(BO3)(4) / A. N. Vasiliev [et al.] // J. Exp. Theor. Phys. - 2006. - Vol. 102, Is. 2. - P. 262-265, DOI 10.1134/S1063776106020075. - Cited References: 10 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
TRIGONAL GDFE3(BO3)(4)
Кл.слова (ненормированные):
Antiferromagnetism -- Gadolinium compounds -- Heat transfer -- Ions -- Magnetic fields -- Single crystals -- Temperature measurement -- Yttrium compounds -- Magnetic entropy -- Magnetic system -- Reorientational transitions -- Scaling procedure -- Specific heat of solids
Аннотация: The specific heat was measured in the range 0.4-300 K in YFe3(BO3)(4), Y0.5Gd0.5Fe3(BO3)(4), and GdFe3(BO3)(4) single crystals. Sharp anomalies were found at temperatures of first-order structural, second-order antiferromagnetic, and first-order spin-reorientational transitions. A Neel temperature of about 37 K was found to be virtually independent of presence of rare-earth ions, indicating rather weak coupling of Gd and Fe subsystems. The contribution of the magnetic system to specific heat was separated through the scaling procedure allowing determination of the magnetic entropy of Fe and Gd subsystems. At the lowest temperatures, the specific heat in GdFe3(BO3)(4) exhibits a Schottky-type anomaly, which is due to Gd3+ eightfold degenerate ground-level splitting by the internal magnetic field of the Fe subsystem of about 7 T.

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Держатели документа:
Moscow MV Lomonosov State Univ, Low Temp Phys Dept, Moscow 119992, Russia
Russian Acad Sci, Siberian Div, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
ИФ СО РАН
Low-Temperature Physics Department, Moscow State University, Moscow, 119992, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute for Solid-State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan

Доп.точки доступа:
Vasiliev, A. N.; Popova, E. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович; Hiroi, Z.
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12.

Oreshonkov, A. S.
SI: Advances in density functional theory (DFT) studies of solids / A. S. Oreshonkov // Mater. - 2022. - Vol. 15, Is. 6. - Ст. 2099, DOI 10.3390/ma15062099. - Cited References: 10 . - ISSN 1996-1944

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Держатели документа:
School of Engineering and Construction, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Орешонков, Александр Сергеевич
}
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13.

Zobov, V. E.
Second moment of multiple-quantum NMR and a time-dependent growth of the number of multispin correlations in solids / V. E. Zobov, A. A. Lundin // J. Exp. Theor. Phys. - 2006. - Vol. 103, Is. 6. - P. 904-916, DOI 10.1134/S1063776106120089. - Cited References: 39 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
NUCLEAR-MAGNETIC-RESONANCE
   LINE-SHAPE
   SPIN SYSTEMS
   DYNAMICS
   SPECTRA
   COHERENCES
   STATE
   BEHAVIOR
   CRYSTAL
   MODEL
Кл.слова (ненормированные):
Correlation methods -- Mathematical models -- Nuclear magnetic resonance spectroscopy -- Spectrum analysis -- Time series analysis -- Four-spin time correlation -- Multispin correlations -- Second moment -- Time power series -- Quantum theory
Аннотация: The time evolution of multispin correlations (the growth of the number of correlated spins as a function of time) can be observed directly using the multiple-quantum nuclear magnetic resonance spectroscopy of solids. A quantity related to this number, namely, the second moment of the intensity distribution of coherences of different orders in the multiple-quantum spectrum can be calculated using the theory proposed in this work. An approach to the calculation of the four-spin time correlation function through which this moment is expressed is developed. The main sequences of contributions in the expansion of this function into a time power series are summed using the approximation of a large number of neighbors both for systems with a secular dipole-dipole interaction and for systems with a nonsecular effective interaction. An exponential dependence of is obtained. The value of is additionally calculated using an expansion in terms of orthogonal operators for three model examples corresponding to different limiting realizations of spin systems. It is shown that the results of the microscopic theory at least qualitatively agree with both the results obtained for model examples and experimental results obtained recently for adamantane.

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Russian Acad Sci, Semenov Inst Chem Phys, Moscow 117977, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 117977, Russian Federation

Доп.точки доступа:
Lundin, A. A.; Зобов, Владимир Евгеньевич
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14.

    Zobov, V. E.
    Reversible and Irreversible propagation of quantum information and its manifestation in multiple-quantum NMR spectra in solids / V. E. Zobov, A. A. Lundin // J. Exp. Theor. Phys. - 2020. - Vol. 131, Is. 2. - P. 273-279, DOI 10.1134/S1063776120060096. - Cited References: 33. - This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the State Task 0082-2019-0001 (State Registration Number AAAA-A19-119012890064-7) . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
DYNAMICS
   LOCALIZATION
   SIMULATIONS
   COHERENCES
Аннотация: On the basis of the earlier developed statistical theory of the growth of the effective size of correlated clusters (the number of correlated spins), an expression for the shape of the multiple-quantum (MQ) NMR spectrum is obtained that takes into account the loss of coherence in a spin system due, for example, to the controlled intervention of the experimenter. It is shown that the scrambling and decoherence processes in the MQ spectrum of the multiparticle system of a solid are not separated, unlike the corresponding spectra of some large isolated molecules [27] in a solution. The relations obtained allow one to extract the necessary information about the above processes (scrambling and decoherence) from the dependence of the MQ spectra on experimental parameters.

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Публикация на русском языке Зобов, Владимир Евгеньевич. Обратимое и необратимое распространение квантовой информации и проявление его в спектрах многоквантового ЯМР в твердом теле [Текст] / В. Е. Зобов, А. А. Лундин // Журн. эксперим. и теор. физ. - 2020. - Т. 158 Вып. 2. - С. 300-308

Держатели документа:
RAS, Fed Res Ctr, Kirensky Inst Phys, KSC,SB, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Semenov Inst Chem Phys, Moscow 117977, Russia.

Доп.точки доступа:
Lundin, A. A.; Зобов, Владимир Евгеньевич; Ministry of Science and Higher Education of the Russian Federation [0082-2019-0001, AAAA-A19-119012890064-7]
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15.

    Polaronic effects in the strongly-correlated systems with strong electron-phonon interaction / I. A. Makarov [и др.] // V International symposium on strong nonlinear vibronic and electronic interactions in solids : program, book of abstracts . - 2015. - Ст. O18. - P. 28. - This work is supported by the Russian scientific foundation, the grant 14-02-00061
   Перевод заглавия: Поляронные эффекты в системах с сильными электронными корреляциями и сильным электрон-фононным взаимодействием

Материалы конференции

Доп.точки доступа:
Makarov, I. A.; Макаров, Илья Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Shneyder, E. I.; Шнейдер, Елена Игоревна; Kozlov, P. A.; Козлов, Пётр Александрович; International symposium on strong nonlinear vibronic and electronic interactions in solids(5 ; 2015 ; may ; 1-3 ; Tartu)
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16.

Deich, L. I.
Phonon spectroscopy of inhomogeneities in disordered solids / L. I. Deich, V. A. Ignatchenko // Solid State Commun. - 1991. - Vol. 80, Is. 10. - P. 881-884, DOI 10.1016/0038-1098(91)90525-Z. - Cited References: 15 . - ISSN 0038-1098

РУБ Physics, Condensed Matter
Рубрики:
SPIN-WAVES
   AMORPHOUS FILMS
   DISPERSION
   FERROMAGNETS
Аннотация: A possibility to use elastic waves for investigation of inhomogeneities corresponding in size to intermediate order in disordered solids is considered. It is shown that frequency dependencies of phase and group velocities of the elastic waves have some peculiarities which give the possibilities to find the characteristic size of inhomogenities and to determine the parameter of a matter whose fluctuations are most significant for the phenomena under study.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН

Доп.точки доступа:
Ignatchenko, V. A.; Игнатченко, Вальтер Алексеевич; Дейч, Лев Исаакович
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17.

Peculiarities of the transport and magnetic properties of the cation substituted manganese sulphides / Romanova O.B., Ryabinkina L.I. // Ninth International workshop on Non–Crystalline solids, Porto 2008, p. 60

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна
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18.

Peculiarities of magnetic properties of Ni-Ge layered films / A. V. Chernichenko [et al.] // TRENDS IN MAGNETISM. - 2011. - Vol. 168-169. - P261-264, DOI 10.4028/www.scientific.net/SSP.168-169.261 . - ISSN 1012-0394
Кл.слова (ненормированные):
exchange bias effect -- magnetic properties -- ni and ge mutual diffusion -- ni-ge layer structures -- surface morphology -- antiferromagnetism -- diffusion -- germanium -- magnetic properties -- magnetization -- morphology -- phase interfaces -- solids -- germanium -- magnetic properties -- magnetization -- nickel -- surface morphology -- temperature distribution -- antiferromagnetic phase -- exchange bias effects -- ge films -- layered films -- low temperatures -- magnetization temperature -- mutual diffusion -- ni and ge mutual diffusion -- ni-ge layer structures -- ge layers -- surface morphology -- magnetism
Аннотация: The surface morphology and magnetic properties of layered Ni-Ge films were investigated. The films surface has been shown to consist of the grains of 2 - 4 nm in height with the average radius of about 40-80 nm. Magnetization temperature dependences are different for FC and ZFC processes; in the latter case, the magnetization maximum is observed near the temperature T m?50K. The exchange bias effect is observed at low temperatures. The results are explained by the formation of the antiferromagnetic phase in the interface between Ni and Ge layers due to the Ge and Ni mutual diffusion.

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Держатели документа:
Kirensky Institute of Physics, SB, RAS, Academgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Chernichenko, A. V.; Черниченко, Ангелина Виталиевна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Marushchenko, D. A.; Марущенко, Дмитрий Анатольевич; Turpanov, I. A.; Турпанов, Игорь Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Greben'kova, Yu. E.; Гребенькова, Юлия Эрнестовна
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19.

Orientational dependence of the tails of dipole-broadened NMR spectra in crystals / V. E. Zobov [et al.] // J. Exp. Theor. Phys. - 1999. - Vol. 88, Is. 1. - P. 157-167, DOI 10.1134/1.558778. - Cited References: 36 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
NUCLEAR-DOUBLE-RESONANCE
   FLUCTUATION SPECTRUM
   CROSS-RELAXATION
   SOLIDS
   DIFFUSION
   MEMORY
   SHAPE
Аннотация: This paper describes experimental and theoretical studies of the tails of the dipole-broadened nuclear magnetic resonance (NMR) absorption spectra of F-19 in isomorphic single crystals of BaF2 and CaF2 with the magnetic field directed along three crystallographic axes. The results obtained by directly measuring the derivative of the tail of the NMR absorption spectrum and the falloffs of the Engelsberg-Lowe free precession after Fourier transformation qualitatively agree. It is shown that the shape of the tail is well described by an exponential function in which the orientational dependence of the exponent does not reduce to variation of the second moment. The observed shape of the tail and the orientational dependence of its parameters are explained on the basis of a self-consistent fluctuating-local-field theory. Nonlinear integral equations are derived for the correlation functions, taking into account the changes of the actual number of nearest neighbors caused by the anisotropy of the dipole-dipole interaction and the contribution of lattice sums with loops. The equations are solved numerically. Good agreement is obtained for the computed dropoffs of the free precession, the NMR spectra, and the cross-polarization rates with the experimental results. (C) 1999 American Institute of Physics. [S1063-7761(99)02401-4].

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН

Доп.точки доступа:
Zobov, V. E.; Зобов, Владимир Евгеньевич; Ivanov, Y. N.; Иванов, Юрий Николаевич; Popov, M. A.; Livshits, A. I.
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20.

Lundin, A. A.
Order dependence of the profile of the intensities of multiple-quantum coherences / A. A. Lundin, V. E. Zobov // J. Exp. Theor. Phys. - 2015. - Vol. 120, Is. 5. - P. 762-771, DOI 10.1134/S1063776115040093. - Cited References:62 . - ISSN 1063. - ISSN 1090-6509. -

РУБ Physics, Multidisciplinary
Рубрики:
PARAMAGNETIC SPIN SYSTEMS
   FREE-INDUCTION DECAY
   NMR-SPECTRA
   AUTOCORRELATION FUNCTIONS
   FLUCTUATION SPECTRUM
   TEMPERATURE DYNAMICS
   LINE-SHAPE
   SOLIDS
   IRREVERSIBILITY
   BEHAVIOR
Аннотация: A modification of the widespread phenomenological model theory of multiple-quantum (MQ) nuclear magnetic resonance spectra of a single cluster of correlated spins has been developed. In contrast to the mentioned theory, the size distribution of such clusters has been consistently taken into account. To obtain the distribution, solutions for the amplitudes of the expansion in the complete set of orthogonal operators are used. Expressions specifying the dependence of the profile of the intensities of MQ coherences on their number n (order) have been obtained. The total form of the dependence has been evaluated by means of the numerical implementation of the resulting expressions. The asymptotic expressions for large n values (wings of the spectrum) have been obtained analytically by the saddle-point method. It has been shown that the dependence under study has a Gaussian central part and exponential wings. The results obtained are in agreement with the previous calculations for some model systems and existing experimental data.

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Публикация на русском языке Лундин, Андрей Арнольдович. Зависимость профиля интенсивностей многоквантовых когерентностей от порядков [Текст] / А. А. Лундин, В. Е. Зобов // Журн. эксперим. и теор. физ. : Наука, 2015. - Т. 147 Вып. 5. - С. 885-895

Держатели документа:
Russian Acad Sci, Semenov Inst Chem Phys, Moscow 117977, Russia.
Russian Acad Sci, Akademgorodok, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Zobov, V. E.; Зобов, Владимир Евгеньевич
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