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Synthesis, structure, and magnetic properties of anion-substituted manganese chalcogenides / S. S. Aplesnin [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 7. - P. 1374-1379. - Cited References: 14. - This study was supported by the Russian Foundation for Basic Research (project nos. 12-02-00125_a, 09-02-92001-NNS_a, 11-02-98018 r_sibir'_a, and 12-02-93001 V'et_a), the Belarusian Republican Foundation for Fundamental Research-Russian Foundation for Basic Research (joint project RFBR-BRFFR no. 12-02-90004), the Belarusian Republican Foundation for Fundamental Research (project no. F08R-037), and the Ministry of Education and Science of the Russian Federation within the framework of the Analytical Department Targeted Program "Development of the Scientific Potential of the Higher School" (state contract no. 2.1.1/11763). . - ISSN 1063-7834

РУБ Physics + Condensed Matter
Рубрики:
Solid-Solutions
MnSe

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Публикация на русском языке Синтез, структурные и магнитные свойства анион-замещенных халькогенидов марганца [Текст] / С. С. Аплеснин [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 7. - С. 1296-1301

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Romanova, O. B.; Романова, Оксана Борисовна; Gorev, M. V.; Горев, Михаил Васильевич; Vasil'ev, A. D.; Demidenko, O. F.; Makovetskii, G. I.; Yanushkevich, K. I.
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Crystal structures of EuLnCuS3 (Ln = Nd and Sm) / A. V. Ruseikina [et al.] // Russ. J. Inorg. Chem. - 2012. - Vol. 57, Is. 1. - P. 79-83, DOI 10.1134/S0036023612010172. - This work was supported by the Federal Target Program "Scientific and Pedagogical Personnel of Innovative Russia" for 2009-2013 (grant nos. 6K/143-09 (P 646) and NK-409/5 (P2263)) and the President of the Russian Federation (Support Program for Leading Scientific Schools of the Russian Federation, grant NSh-4645.2010.2). - The results of this study have been presented at the X International Scientific Conference “Solid-State Chemistry: Nanomaterials, Nanotechnologies” (Stavropol, October 17–22, 2010) and the All-Russia Scientific Conference “Challenges of Modern Chemistry. Theory and Practice” (Ufa, October 21–23, 2010). . - ISSN 0036-0236

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
RARE-EARTH
   MAGNETIC-PROPERTIES
   COPPER SULFIDE
   CHALCOGENIDES
   EUROPIUM
   EU2CUS3
Аннотация: The compound sulfides EuLnCuS3 (Ln = Nd and Sm) were obtained for the first time. Their crystal structures were determined from X-ray powder diffraction data. The crystals of both compounds are orthorhombic (space group Pnma). The compound EuNdCuS3 is isostructural with BaLaCuS3; the unit cell parameters are a = 11.0438(2) Å, b = 4.0660(1) Å, c = 11.4149(4) Å. The compound EuSmCuS3 is isostructural with Eu2CuS3; the unit cell parameters are a = 10.4202(2) Å, b = 3.9701(1) Å, c = 12.8022(2) Å.

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Публикация на русском языке Кристаллическая структура соединений EuLnCuS3 (Ln = Nd, Sm) [Текст] / А. В. Русейкина [и др.] // Журн. неорг. химии : Наука, 2012. - Т. 57 № 1. - С. 86-90

Держатели документа:
GOU VPO Tyumen State Univ, Tyumen, Russia
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk, Russia

Доп.точки доступа:
Ruseikina, A. V.; Solovyov, L. A.; Соловьев, Леонид Александрович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Andreev, O. V.
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Peculiarities of transport, resonance and optical properties of the anion-substituted chalcogenides manganese / O. B. Romanova [et al.] // Moscow Int. Symp. on Magnet. (MISM-2014) : Book of abstracts. - 2014. - Ст. 1PO-K-9. - P. 542 . - ISBN 978-5-91978-025-0

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Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Makovetskii, G. I.; Demidenko, O. F.; Yanushkevich, K. I.; Moscow International Symposium on Magnetism(6 ; 2014 ; 29 June-3 July ; Moscow); Московский государственный университет им. М.В. Ломоносова
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Aplesnin, S. S.
Magnetoresistance effect in anion-substituted manganese chalcogenides / S. S. Aplesnin, O. B. Romanova, K. I. Yanushkevich // Phys. Status Solidi B. - 2015. - Vol. 252, Is. 8. - P. 1792-1798, DOI 10.1002/pssb.201451607. - Cited References: 35. - This study was supported by the official assignment no. 114090470016. . - ISSN 0370. - ISSN 1521-3951. -

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
   ELECTRONIC-STRUCTURE
   SOLID-SOLUTIONS
   MnTe
   MnSe
   CONDUCTIVITY
   TRANSITION
Кл.слова (ненормированные):
Electron tunneling -- Magnetic properties -- Magnetoresistance -- Semiconductors
Аннотация: The electric and magnetic properties of anion-substituted antiferromagnetic MnSe1-xTex (0.1≤x≤0.4) semiconductors in the 77-700K temperature range and magnetic fields under 1T are studied. In the MnSe1-xTex solid solutions, negative magnetoresistance in the vicinity of the Néel temperature for x=0.1 and for composition with x=0.2 in the paramagnetic range below 270K is revealed. A dependence of the magnetic susceptibility versus the prehistory of the samples is found. The model of localized spin-polarized electrons with the localization radius depending on the magnetic field is proposed for x=0.1. In the paramagnetic range, the negative magnetoresistance and the behavior of magnetic moment are a result of orbital glass formation.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Akademgorodok 50, Krasnoyarsk, Russian Federation
Siberian State Aerospace University M F Reshetnev, Krasnoyarsky Rabochy Av. 31, Krasnoyarsk, Russian Federation
Scientific-Practical Materials Research Center NAS, P. Brovski Str.19, Minsk, Belarus

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Янушкевич, Казимир Иосифович; Yanushkevich K. I.; Аплеснин, Сергей Степанович
}
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    Peculiarities of transport, resonance and optical properties of the anion-substituted manganese chalcogenides / O. B. Romanova [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 447-450, DOI 10.4028/www.scientific.net/SSP.233-234.447 . - ISSN 1662-9779. - ISSN 978-3-038
Рубрики:
Achievements in magnetism
   Spintronics and magnetotransport
Кл.слова (ненормированные):
chalcogenides -- magnetoresistance effect -- optical absorption spectra -- resonance properties
Аннотация: Present paper reports of resonance properties of Mn2GeO4 single crystals. The data confirm the formation of a complex spiral magnetic structure at low temperatures. It is shown that the spin reorientation may be associated with the competition anisotropic contributions of the various subsystems of the manganese ions.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Makovetskii, G. I.; Demidenko, O. F.; Yanushkevich, K. I.; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
}
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Magnetic order in FeCr2S4-type chalcogenide spinels / F. J. Berry [et al.] // J. Phys.: Condens. Matter. - 2007. - Vol. 19, Is. 26. - Ст. 266204, DOI 10.1088/0953-8984/19/26/266204. - Cited References: 15 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
COLOSSAL-MAGNETORESISTANCE
TRANSITION
Кл.слова (ненормированные):
Doping (additives) -- Iron compounds -- Magnetization -- Magnetoresistance -- Mossbauer spectroscopy -- X ray absorption fine structure spectroscopy -- Chalcogenide spinels -- Low temperature magnetic behaviour -- Magnetic ordering temperature -- Thiospinels -- Chalcogenides
Аннотация: The thiospinels of composition FeCr2S4 and Fe1+xCr2-2xSnxS4 with 0 < x < 0.1 have been examined by means of extended x- ray absorption fine structure, Mossbauer spectroscopy and magnetoresistance techniques. The structural characterization shows that tin enters the spinel- related lattice as Sn4+ and occupies the octahedral B site. Appreciable magnetoresistance is observed in the temperature range 160 - 185 K which includes the magnetic ordering temperature. The effect of slight non- stoichiometry in FeCr2S4 and of tin doping is observed in the M r ossbauer spectra which show the Fe2+ ions to occupy the tetrahedral A sites. The M r ossbauer spectra recorded around the magnetic ordering temperature are sensitive to small ( 0.03 T) applied magnetic fields. The influence of tin on the low temperature magnetic behaviour is associated with the distribution of Cr3+, Sn4+ and Fe3+ ions around tetrahedral Fe2+ sites and vacancies in the anionic sublattice. An interpretation of the colossal magnetoresistance phenomena below TN is suggested.

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Держатели документа:
Open Univ, Dept Chem, Milton Keynes MK7 6AA, Bucks, England
Russian Acad Sci, AV Shubnikov Crystallog Inst, Moscow 119333, Russia
Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
Russian Acad Sci, Inst Inorgan & Gen Chem, Moscow 119907, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Department of Chemistry, Open University, Walton Hall, Milton Keynes MK7 6AA, United Kingdom
A V Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninsky avenue 59, Moscow 119333, Russian Federation
Department of Physics, University of Liverpool, Liverpool L69 3BX, United Kingdom
Institute of Inorganic and General Chemistry, Russian Academy of Sciences, Leninsky avenue 31, Moscow 119907, Russian Federation
L V Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Berry, F. J.; Dmitrieva, T. V.; Ovanesyan, N. S.; Lyubutin, I. S.; Thomas, M. F.; Sarkisyan, V. A.; Ren, X.; Aminov, T. G.; Shabunina, G. G.; Rudenko, V.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Dubinskaya, Y. L.
}
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The influence of magnetic field on the frequency dependence of the impedance in the anion–substituted manganese chalcogenides / O. B. Romanova [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P4.4. - P. 232. - This work was financially supported by RFFI №15–42–04099 and assignment №114090470016. . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
chalcogenides -- impedance -- relaxation -- magnetoresistance

Держатели документа:
Scientific-Practical Materials Research Center NAS, Minsk, Belarus

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Korolev, V. V.; Королёв В. В.; Kretinin, V. V.; Кретинин В. В.; Yanushkevich, K. I.; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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Magnetoimpedance and magnetocapacitance of anion-substituted manganese chalcogenides / S. S. Aplesnin [et al.] // J. Appl. Phys. - 2017. - Vol. 121, Is. 7. - Ст. 075701, DOI 10.1063/1.4976097. - Cited References: 26. - The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 17-42-240079 r_sibir_a. This study was supported by the Russian Foundation for Basic Research project No. 16-52-00045 Bel_a and government work No. 114090470016. . - ISSN 0021-8979
Кл.слова (ненормированные):
Activation energy -- Chalcogenides -- Inorganic compounds -- Manganese -- Neel temperature -- Carrier relaxation time -- Impedance spectroscopy -- Low and high frequencies -- Magnetically ordered state -- Magneto-resistive effect -- Magnetocapacitance -- Pyroelectric current -- Temperature dependence -- Temperature distribution
Аннотация: The magnetoresistive effect in MnSe1−XTeX manganese chalcogenides with a substitute concentration of X = 0.1 is studied by impedance spectroscopy. The magnetoimpedance above the Neel temperature is found. The obtained experimental data are explained in the framework of the model of existence of magnetic nanoareas of two types. Two activation energies in the low- and high-frequency regions are determined from the frequency and temperature dependences of the permittivity described in the Debye model. The extrema found in the temperature dependence of the pyroelectric current are consistent with the maxima in the temperature dependence of magnetization. Temperature dependence of the carrier relaxation time is established. The magnetocapacitance of the MnSe1−XTeX solid solutions is found. The change in the carrier type above the Neel temperature and the temperature of the transition to the magnetically ordered state in the MnTe nanoarea is established.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, M. F. Reshetnev Corporation, Krasnoyarsk, Russian Federation
Scientific-Practical Materials Research Center NAS, Minsk, Belarus

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Romanova, O. B.; Романова, Оксана Борисовна; Korolev, V. V.; Sitnikov, M. N.; Yanushkevich, K. I.
}
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Korshunov, M. M.
Impurities in multiband superconductors / M. M. Korshunov, Y. N. Togushova, O. V. Dolgov // Physics-Uspekhi. - 2016. - Vol. 59, Is. 12. - P. 1211-1240, DOI 10.3367/UFNe.2016.07.037863. - Cited References: 200. - We acknowledge partial support by RFBR (grant 16-02-00098) and Government Support of the Leading Scientific Schools of the Russian Federation (NSh-7559.2016.2). . - ISSN 1063-7869
Кл.слова (ненормированные):
Unconventional superconductors -- Iron pnictides -- Iron chalcogenides -- Impurity scattering
Аннотация: Disorder impurities and defects violating the ideal long-range order is always present in solids. It can result in interesting and sometimes unexpected effects in multiband superconductors, especially if the superconductivity is uncon-ventional, thus having symmetry other than the usual s-wave. This paper uses the examples of iron-based pnictides and chal-cogenides to examine how both nonmagnetic and magnetic impurities affect superconducting states with s± and s++ order parameters. We show that disorder causes the transition between s± and s++ states and examine what observable effects this transition can produce. © 2016 Uspekhi Fizicheskikh Nauk, Russian Academy of Sciences.

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Публикация на русском языке Коршунов, Максим Михайлович. Примеси в многозонных сверхпроводниках [Текст] / М. М. Коршунов, Ю. Н. Тогушова, В. Г. Долгов // Успехи физ. наук : ред. журн. "Успехи физ. наук", 2016. - Т. 186 № 12. - С. 1315-1347

Держатели документа:
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Science Center SB RAS, ul. Akademgorodok 50, str. 38, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodnyi prosp. 79, Krasnoyarsk, Russian Federation
Max-Planck-Institut fur Festkorperforschung, Stuttgart, Germany
Lebedev Physical Institute, Russian Academy of Sciences, Leninskii prosp. 53, Moscow, Russian Federation

Доп.точки доступа:
Togushova, Yu.N.; Тогушова, Ю. Н.; Dolgov, O. V.; Коршунов, Максим Михайлович
}
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10.

    Details of the disorder-induced transition between s± and s++ states in the two-band model for Fe-based superconductors / V. A. Shestakov [et al.] // Supercond. Sci. Technol. - 2018. - Vol. 31, Is. 3. - Ст. 034001, DOI 10.1088/1361-6668/aaa501. - Cited References:62. - We are grateful to P D Grigor'ev and M V Sadovskii for useful discussions. This work was supported in part by the Russian Foundation for Basic Research (grant 16-02-00098) and Government Support of the Leading Scientific Schools of the Russian Federation (NSh-7559.2016.2). MMK and VAS acknowledge the support of the 'BASIS' Foundation for Development of Theoretical Physics and Mathematics. . - ISSN 0953-2048. - ISSN 1361-6668
   Перевод заглавия: Детали вызванного беспорядком перехода между s± и s++ состояниями в двузонной модели сверхпроводников на основе железа

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
IRON-BASED SUPERCONDUCTORS
HIGH-TEMPERATURE SUPERCONDUCTIVITY
PAIRING
Кл.слова (ненормированные):
unconventional superconductors -- iron pnictides -- iron chalcogenides -- impurity scattering
Аннотация: IIrradiation of superconductors with different particles is one of many ways to investigate the effects of disorder. Here we study the disorder-induced transition between s ± and s ++ states in the two-band model for Fe-based superconductors with nonmagnetic impurities. Specifically, we investigate the important question of whether the superconducting gaps during the transition change smoothly or abruptly. We show that the behavior can be of either type and is controlled by the ratio of intraband to interband impurity scattering potentials, and by a parameter σ, that represents scattering strength and ranges from zero (Born approximation) to one (unitary limit). For the pure interband scattering potential and the scattering strength σ ≲ 0.11, the s ± → s ++ transition is accompanied by steep changes in the gaps, while for larger values of σ, the gaps change smoothly. The behavior of the gaps is characterized by steep changes at low temperatures, T˂ 0.1Tc0 with Tc0 being the critical temperature in the clean limit, otherwise it changes gradually. The critical temperature Tc is always a smooth function of the scattering rate in spite of the steep changes in the behavior of the gaps.

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Leibniz Inst Festkorper & Werkstoffforsch, D-01069 Dresden, Germany.
Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
RAS, PN Lebedev Phys Inst, Moscow 119991, Russia.

Доп.точки доступа:
Shestakov, V. A.; Шестаков, Вадим Андреевич; Korshunov, M. M.; Коршунов, Максим Михайлович; Togushova, Yu.N.; Тогушова Ю. Н.; Efremov, D. V.; Dolgov, O. V.; Russian Foundation for Basic Research [16-02-00098]; Government Support of the Leading Scientific Schools of the Russian Federation [NSh-7559.2016.2]; 'BASIS' Foundation for Development of Theoretical Physics and Mathematics
}
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11.

    Shestakov, V. A.
    Temperature-dependent s± ↔ s++ transitions in the multiband model for Fe-based superconductors with impurities / V. A. Shestakov, M. M. Korshunov, O. V. Dolgov // Symmetry. - 2018. - Vol. 10, Is. 8. - Ст. 323, DOI 10.3390/sym10080323. - Cited References: 50. - This work was supported in part by the Russian Foundation for Basic Research (grant 16-02-00098), Presidium of RAS Program for the Fundamental Studies #12, and "BASIS" Foundation for Development of Theoretical Physics and Mathematics. MMK acknowledges support by the Gosbudget program #0356-2017-0030. . - ISSN 2073-8994
   Перевод заглавия: Зависящие от температуры переходы s± ↔ s++ в многозонной модели сверхпроводников на основе железа с примесями

РУБ Multidisciplinary Sciences
Рубрики:
IRON-BASED MATERIALS
Кл.слова (ненормированные):
unconventional superconductors -- iron pnictides -- iron chalcogenides -- impurity scattering
Аннотация: We study the dependence of the superconducting gaps on both the disorder and the temperature within the two-band model for iron-based materials. In the clean limit, the system is in the s± state with sign-changing gaps. Scattering by nonmagnetic impurities leads to the change of the sign of the smaller gap, resulting in a transition from the s± to the s++ state with the sign-preserving gaps. We show here that the transition is temperature-dependent. Thus, there is a line of s±→s++ transition in the temperature–disorder phase diagram. There is a narrow range of impurity scattering rates, where the disorder-induced s±→s++ transition occurs at low temperatures, but then the low-temperature s++ state transforms back to the s± state at higher temperatures. With increasing impurity scattering rate, the temperature of such s++→s± transition shifts to the critical temperature Tc, and only the s++ state is left for higher amounts of disorder.

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Держатели документа:
RAS, SB, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Donostia Int Phys Ctr, Donostia San Sebastian 20018, Spain.
RAS, PN Lebedev Phys Inst, Moscow 119991, Russia.

Доп.точки доступа:
Korshunov, M. M.; Коршунов, Максим Михайлович; Dolgov, O. V.; Шестаков, Вадим Андреевич; Russian Foundation for Basic Research [16-02-00098]; Presidium of RAS Program for the Fundamental Studies [12]; "BASIS" Foundation for Development of Theoretical Physics and Mathematics; Gosbudget program [0356-2017-0030]
}
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12.

Korshunov, M. M.
Spin resonance peak in the superconducting state of iron pnictides and chalcogenides / M. M. Korshunov, V. A. Shestakov, Yu. N. Togushova // The 21st International Conference on Solid Compounds of Transition Elements (SCTE 18) / programme and abstracts. - 2018. - Ст. Tu-A15. - P. 48
Аннотация: Disorder can result in interesting and sometimes unexpected effects in multiband superconductors. Especially if the superconductivity is unconventional like in ironbased pnictides and chalcogenides. I’m going to discuss how the impurity scattering affects superconducting states with s+- and s++ gaps, and show that disorder causes the transitions between s+- and s++ states and examine observable effects these transitions can produce.

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Доп.точки доступа:
Shestakov, V. A.; Togushova, Yu.N.; Тогушова, Ю.Н.; Коршунов, Максим Михайлович; International Conference on Solid Compounds of Transition Elements(21 ; 2018; Mar.; 25-29 ; Vienna, Austria)
}
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13.

Romanova, O. B.
Structural properties of sulfides chalcogenides manganese substituted by elements with variable valency / O. B. Romanova, L. V. Udod, O. F. Demidenko // IOP Conf. Ser.: Mater. Sci. Eng. - 2020. - Vol. 918, Is. 1. - Ст. 012101DOI 10.1088/1757-899X/918/1/012101. - Cited References: 33. - The reported study was funded by RFBR according to the research project №20-52-00005 Bel_a
Аннотация: The structure and transport of YbXMn1-XS and TmXMn1-XS sulfides (0.05=X=0.2) was studied in the temperature range 80-500K. The temperature ranges of local deformations and a decrease of the thermal expansion coefficient with increasing concentration X caused of anomalous compressibility in the magnetically ordered region are determined for a system doped with ytterbium. Pinning temperatures of lattice polarons are established, which are accompanied by lattice deformation and IR mode condensation for a system doped with thulium.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Scientific-Practical Materials Research Center Nas, Minsk, 220072, Belarus

Доп.точки доступа:
Udod, L. V.; Удод, Любовь Викторовна; Demidenko, O. F.; Романова, Оксана Борисовна; International Scientific Conference Transport of Siberia 2020(8th ; (22-27 May 2020 ; Novosibirsk, Russia)
}
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14.

Decisive proofs of the s± → s++ transition in the temperature dependence of the magnetic penetration depth / V. A. Shestakov, M. M. Korshunov, Y. N. Togushova, O. V. Dolgov // Supercond. Sci. Technol. - 2021. - Vol. 34, Is. 7. - Ст. 075008, DOI 10.1088/1361-6668/abff6f. - Cited References: 40. - We are grateful to D V Efremov, A S Fedorov, S G Ovchinnikov, E I Shneyder, D Torsello, and A N Yaresko for useful discussions. This work was supported in part by the Russian Foundation for Basic Research (RFBR) Grant No. 19-32-90109 and by RFBR and Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science to the Research Projects 'Electronic correlation effects and multiorbital physics in iron-based materials and cuprates' Grant No. 19-42-240007. . - ISSN 0953-2048. - ISSN 1361-6668

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
ORDER-PARAMETER
   IMPURITIES
   SUPERCONDUCTORS
   STATES
   MODEL
Кл.слова (ненормированные):
unconventional superconductors -- iron pnictides -- iron chalcogenides -- impurity scattering -- penetration depth
Аннотация: One of the features of the unconventional s± state in iron-based superconductors is possibility to transform to the s++ state with the increase of the nonmagnetic disorder. Detection of such a transition would prove the existence of the s± state. Here we study the temperature dependence of the London magnetic penetration depth within the two-band model for the s± and s++ superconductors. By solving Eliashberg equations accounting for the spin-fluctuation mediated pairing and nonmagnetic impurities in the T-matrix approximation, we have derived a set of specific signatures of the s± → s++ transition: (1) sharp change in the behavior of the penetration depth λL as a function of the impurity scattering rate at low temperatures; (2) before the transition, the slope of ΔλL(T) = λL(T) - λL(0) increases as a function of temperature, and after the transition this value decreases; (3) the sharp jump in the inverse square of the penetration depth as a function of the impurity scattering rate, λL-2(Γa), at the transition; (4) change from the single-gap behavior in the vicinity of the transition to the two-gap behavior upon increase of the impurity scattering rate in the superfluid density ρs(T).

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Держатели документа:
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
RAS, PN Lebedev Phys Inst, Moscow 119991, Russia.
Donostia Int Phys Ctr, San Sebastian 20018, Spain.

Доп.точки доступа:
Shestakov, V. A.; Шестаков, Вадим Андреевич; Korshunov, M. M.; Коршунов, Максим Михайлович; Togushova, Yu. N.; Тогушова Ю. Н.; Dolgov, O., V; Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [19-32-90109]; RFBRRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science to the Research Projects 'Electronic correlation effects and multiorbital physics in iron-based materials and cuprates' [19-42-240007]
}
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15.

Evolution of structural, thermal, optical, and vibrational properties of Sc2S3, ScCuS2, and BaScCuS3 semiconductors / N. O. Azarapin, A. S. Oreshonkov, I. A. Razumkova [et al.] // Eur. J. Inorg. Chem. - 2021. - Vol. 2021, Is. 33. - P. 3355-3366, DOI 10.1002/ejic.202100292. - Cited References: 50. - The work was partially carried out using the resources of the Research Resource Center "Natural Resources Management and Physico-Chemical Research" (Tyumen University) with financial support from the Ministry of Science and Higher Education of the Russian Federation (contract No. 05.594.21.0019, UIN RFMEFI59420X0019). The Raman spectroscopic studies were carried out at the collaborative research center for vibrational spectroscopy at ISSC UB RAS (Ekaterinburg, Russia). I.I.L. would like to acknowledge the support from the Research Program No. AAAA-A19-119031890025-9 (ISSC UB RAS). The use of the equipment of Krasnoyarsk Regional Center of Research Equipment of the Federal Research Center "Krasnoyarsk Science Center SB RAS" is acknowledged." The authors are grateful to Dr. Elena V. Vladimirova (ISSC UB RAS) for technical assistance . - ISSN 1434-1948. - ISSN 1099-0682

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
RARE-EARTH
QUATERNARY CHALCOGENIDES
CRYSTAL-STRUCTURES
Кл.слова (ненормированные):
Complex sulfides -- Density functional calculations -- DTA -- Polychalcogenides -- Rare earths
Аннотация: In the present work, we report on the synthesis of Sc2S3, ScCuS2 and BaScCuS3 powders using a method based on oxides sulfidation and modification of their properties. The crystal structures and morphology of samples are verified by XRD and SEM techniques. Thermal stability has been studied by DTA which has revealed that Sc2S3 decomposes to ScS through melting at 1877 K. ScCuS2 and BaScCuS3 melt incongruently at temperatures of 1618 K and 1535 K, respectively. The electronic structure calculations show that the investigated compounds are semiconductors with indirect band gap (Eg). According to the diffuse reflection spectroscopy, Sc2S3, ScCuS2 and BaScCuS3 are wide-bandgap semiconductors featured the Eg values of 2.53 eV, 2.05 eV and 2.06 eV, respectively. The band gap decreases with the introduction of copper (I) and barium cations into the crystal structure of the compounds. Variation of local structure has been verified by Raman and infrared spectroscopy. The calculated vibrational modes of ScCuS2 correspond to CuS4 and Sc−S layer vibrations, even though ScS6 octahedra-like structural units can be found in the structure.

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Держатели документа:
Tyumen State Univ, Dept Inorgan & Phys Chem, Tyumen 625003, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Lab Mol Spect, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Engn & Construct, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Inst Chem & Chem Technol, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620990, Russia.

Доп.точки доступа:
Azarapin, N. O.; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Razumkova, I. A.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Maximov, N. G.; Leonidov, I. I.; Shestakov, N. P.; Шестаков, Николай Петрович; Andreev, O. V.; Ministry of Science and Higher Education of the Russian Federation [05.594.21.0019, UIN RFME-FI59420X0019]; ISSC UB RAS [AAAA-A19-119031890025-9]
}
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16.

Synthesis, structure, and properties of EuLnCuSe3 (Ln = Nd, Sm, Gd, Er) / O. V. Andreev, V. V. Atuchin, A. S. Aleksandrovsky [et al.] // Crystals. - 2022. - Vol. 12, Is. 1. - Ст. 17, DOI 10.3390/cryst12010017. - Cited References: 60. - The study was funded by the Ministry of Science and Higher Education of the Russian Ferderation (Projects AAAA-A21-121011390011-4 and AAAA-A19-119031890025-9), as well as the Government of the Tyumen Region (grant to non-profit organizations No. 2. 89-don, dated 7 December 2020) . - ISSN 2073-4352

РУБ Crystallography + Materials Science, Multidisciplinary
Рубрики:
RARE-EARTH
   CRYSTAL-STRUCTURE
   MAGNETIC-PROPERTIES
   CHALCOGENIDES
Кл.слова (ненормированные):
rare earth elements -- complex sulfides -- chalcogenides -- crystal structure -- magnetic properties
Аннотация: EuLnCuSe3 (Ln = Nd, Sm, Gd, Er), due to their complex composition, should be considered new materials with the ability to purposefully change the properties. Samples of the EuLnCuSe3 were prepared using Cu, rare earth metal, Se (99.99%) by the ampoule method. The samples were obtained by the crystallization from a melt and annealed at temperatures 1073 and 1273 K. The EuErCuSe3 crystal structure was established using the single-crystal particle. EuErCuSe3 crystallizes in the orthorhombic system, space group Cmcm, KCuZrS3 structure type, with cell parameters a = 4.0555 (3), b = 13.3570 (9), and c = 10.4602 (7) Å, V = 566.62 (6) Å3. In structure EuErCuSe3, erbium ions are coordinated by selenium ions in the octahedral polyhedron, copper ions are in the tetrahedral coordination, europium ions are between copper and erbium polyhedra layers and are coordinated by selenium ions as two-cap trigonal prisms. The optical band gap is 1.79 eV. At 4.7 K, a transition from the ferrimagnetic state to the paramagnetic state was detected in EuErCuSe3. At 85 and 293 K, the compound is in a paramagnetic state. According to XRPD data, EuLnCuSe3 (Ln = Nd, Sm, Gd) compounds have a Pnma orthorhombic space group of the Eu2CuS3 structure type. For EuSmCuSe3, a = 10.75704 (15) Å, b = 4.11120 (5) Å, c = 13.37778 (22) Å. In the series of EuLnCuSe3 compounds, the optical band gap increases 1.58 eV (Nd), 1.58 eV (Sm), 1.72 eV (Gd), 1.79 eV (Er), the microhardness of the 205 (Nd), 210 (Sm), 225 (Gd) 235 ± 4 HV (Er) phases increases, and the thermal stability of the phases increases significantly. According to the measurement data of differential scanning calorimetry, the EuNdCuSe3 decomposes, according to the solid-phase reaction T = 1296 K, ΔH = 8.2 ± 0.8 kJ/mol. EuSmCuSe3 melts incongruently T = 1449 K, ΔH = 18.8 ± 1.9 kJ/mol. For the EuGdCuSe3, two (Tα↔β = 1494 K, ΔHα↔β = 14.8 kJ/mol, Tβ↔γ = 1530 K, ΔHβ↔γ = 4.8 kJ/mol) and for EuErCuSe3 three polymorphic transitions (Tα↔β = 1561 K, ΔHα↔β = 30.3 kJ/mol, Tβ↔γ = 1579 K, ΔHβ↔γ = 4.4 kJ/mol, and Tγ↔δ = 1600 K, ΔHγ↔δ = 10.1 kJ/mol). The compounds melt incongruently at the temperature of 1588 K, ΔHmelt = 17.9 ± 1.8 kJ/mol and 1664 K, ΔHmelt = 25.6 ± 2.5 kJ/mol, respectively. Incongruent melting of the phases proceeds with the formation of a solid solution of EuSe and a liquid phase.

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Держатели документа:
Univ Tyumen, Inst Chem, Tyumen 625003, Russia.
RAS, Inst Semicond Phys, Lab Opt Mat & Struct, SB, Novosibirsk 630090, Russia.
Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia.
Novosibirsk State Tech Univ, Dept Ind Machinery Design, Novosibirsk 630073, Russia.
RAS, KSC, Fed Res Ctr, Kirensky Inst Phys,SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660036, Russia.
Ind Univ Tyumen, Dept Gen & Special Chem, Tyumen 625000, Russia.
RAS, Boreskov Inst Catalysis, SB, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Lab Mol Design & Ecol Safe Technol, Novosibirsk 630090, Russia.
RAS, Inst Solid State Chem, UB, Ekaterinburg 620990, Russia.

Доп.точки доступа:
Andreev, O. V.; Atuchin, V. V.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Denisenko, Y. G.; Zakharov, B. A.; Tyutyunnik, A. P.; Habibullayev, N. N.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Ulybin, D. A.; Shpindyuk, D. D.; Ministry of Science and Higher Education of the Russian Ferderation [AAAA-A21-121011390011-4, AAAA-A19-119031890025-9]; Government of the Tyumen Region [2. 89-don]
}
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17.

    Условия синтеза, кристаллическая структура и магнитные свойства селенидов Mn–Tm–Se / С. С. Аплеснин, О. Б. Романова, А. И. Галяс [и др.] // Изв. НАН Беларуси. Сер. физ.-технич. наук. - 2022. - Т. 67, № 2. - С. 135-143 ; Ves. NAN Belarusì. Ser. fìz.-tèhnìčn. navuk ; Proc. Nat. Acad. Sci. Belarus, Phys.-Techn. Ser., DOI 10.29235/1561-8358-2022-67-2-135-143. - Библиогр.: 15. - Работа выполнена при финансовой поддержке Белорусского республиканского фонда фундаментальных исследований (проект № Т20Р-052) и Российского фонда фундаментальных исследований (проект №20-52-00005 Bel_a). - This work was supported by the Belarusian Republican Foundation for Basic Research (project no. T20R-052) and the Russian Foundation for Basic Research (project no. 20-52-00005 Bel_a) . - ISSN 1561-8358. - ISSN 2524-244X
   Перевод заглавия: Synthesis conditions, crystal structure and magnetic properties of Mn–Tm–Se selenides
Кл.слова (ненормированные):
халькогениды -- твердые растворы -- кристаллическая структура -- магнитные свойства -- chalcogenides -- solid solutions -- crystal structure -- magnetic properties
Аннотация: Методом реакций в твердой фазе синтезированы однофазные составы в квазибинарном разрезе MnSe–TmSe. Кристаллическая структура поликристаллических порошков изучена в CuKα-излучении. Установлено, что образцы в интервале концентраций 0 ≤ x ≤ 0,7 имеют кубическую структуру пространственной группы Fm 3¯m . Изменение концентрации катионов Tm в составах Mn1–xTmxSe приводит к увеличению параметра a элементарной кристаллической ячейки от 0,547 нм для состава Mn0,975Tm0,025Se до 0,566 нм у состава Mn0,3Tm0,7Se. Методом «flash» на подложках оптически прозрачного стекла синтезированы тонкие слои твердых растворов Mn1–xTmxSe. Толщины пленок заключены в интервале значений от 0,8 до 3,2 мкм. Установлено, что пленки Mn1–xTmxSe также обладают сингонией NaCl, S.G.: Fm 3¯m . Состав пленок Mn1–xTmxSe соответствует химическому составу порошков шихты MnSe–TmSe. В интервале температур ~ 80–900 К измерены величины удельной намагниченности и магнитной восприимчивости исследуемых селенидов. Полученные результаты позволяют определить температурные режимы синтеза новых магнитных полупроводниковых веществ, в том числе в пленочном состоянии. Синтезированные вещества могут быть использованы в устройствах микроэлектроники многофункционального назначения, а также при разработке новых материалов, способных работать в широких интервалах температур и при воздействии внешних магнитных полей.
Single-phase compositions in the MnSe–TmSe quasi-binary section have been synthesized by the method of reactions in the solid phase. The crystal structure of polycrystalline powders has been studied in CuKα-radiation. It was found that the samples in the concentration range 0 ≤ x ≤ 0,7 have a cubic structure of the space group Fm 3¯m . An increase in the concentration of Tm cations in the Mn1–xTmxSe compositions leads to an increase in the unit cell parameter a from 0.547 nm for the Mn0.975Tm0.025Se compound to 0.566 nm for the Mn0.3Tm0.7Se composition. Thin layers of Mn1–xTmxSe solid solutions were synthesized by the flash method on optically transparent glass substrates. The film thicknesses are in the range of values from 0.8 to 3.2 µm. It has been established that Mn1–xTmxSe films also have the system NaCl, S.G.: Fm 3¯m . The composition of the Mn1–xTmxSe films corresponds to the chemical composition of the MnSe–TmSe charge powders. In the temperature range ~ 80–900 K, the va lues of the specific magnetization and magnetic susceptibility of the studied selenides were measured. The results obtained make it possible to determine the temperature regimes for the synthesis of new magnetic semiconductor substances, including those in the film state. The synthesized substances can be used in multifunctional microelectronic devices, as well as in the development of new materials capable of operating in wide temperature ranges and under the influence of external magnetic fields.

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РИНЦ
Держатели документа:
Институт физики имени Л. В. Киренского Сибирского отделения Российской академии наук, Красноярск, Россия
Научно-практический центр Национальной академии наук Беларуси по материаловедению, Минск, Беларусь

Доп.точки доступа:
Аплеснин, Сергей Степанович; Aplesnin, S. S.; Романова, Оксана Борисовна; Romanova, O. B.; Галяс, А. И.; Живулько, А. М.; Янушкевич, К. И.

}
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18.

LixAg1–xGaSe2: interplay between lithium and silver in mid-infrared nonlinear optical chalcogenides / L. Isaenko, L. Dong, A. Kurus [et al.] // Adv. Opt. Mater. - 2022. - Vol. 10, Is. 24. - Ст. 2201727, DOI 10.1002/adom.202201727. - Cited References: 37. - This work was supported by the National Natural Science Foundation of China (Grant No. 22133004), Russian Science Foundation, grant # 19‐12‐00085‐P (crystal growth, crystal structure analysis, band gap measurement) and partly done on state assignment of IGM SB RAS (composition chemical analysis) . - ISSN 2195-1071
Кл.слова (ненормированные):
chalcogenides -- energy band gap -- mid-IR nonlinear optical crystals -- second harmonic generation -- structure analysis
Аннотация: AgGaSe2 and LiGaSe2 are two famous mid-infrared nonlinear optical (NLO) materials with similar chemical formula but different structural symmetry. The former material has relatively larger NLO effect and birefringence but rather small energy band gap, while the latter is the opposite. Aiming at achieving a good balance of NLO properties, here the substitution between silver and lithium ions on the evolution of structural and optical properties in a new series of LixAg1–xGaSe2 crystals is systematically investigated. It reveals that, with the increase of Li content, LixAg1–xGaSe2 almost keeps the same tetragonal symmetry with AgGaSe2 until x ≈ 0.9. The NLO effects and birefringence values vary with respect to x with the largest variation at x = 0.8–0.9. The optimal combination of birefringence (0.03–0.025) and nonlinear parameters (26–30 pm V−1) is achieved at x = 0.4–0.5. As the energy band gap increases with the increase of x, the maximal value of 2.2 eV for chalcopyrite structure suggests that the laser-induced damage threshold of LixAg1–xGaSe2 would be as large as five-fold of AgGaSe2. This study provides a good example to show that the rational substitution between Li and Ag can significantly improve the balance of NLO properties in chalcogenides.

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Держатели документа:
Novosibirsk State University, Novosibirsk, 630090, Russian Federation
Functional Crystal Lab, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation
University of Chinese Academy of Sciences, Beijing, 100049, China
L.V. Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Isaenko, L.; Dong, L.; Kurus, A.; Lin, Z.; Yelisseyev, A.; Lobanov, S.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Korzhneva, K.; Goloshumova, A.
}
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19.

Concentration dependences of the structural, magnetic and kinetic properties of manganese chalcogenides doped with tellurium / O. B. Romanova, M. N. Sitnikov, Yu. Yu. Loginov, H. Abdelbaki // IOP Conf. Ser.: Mater. Sci. Eng. - 2022. - Vol. 1230. - Ст. 012016, DOI 10.1088/1757-899X/1230/1/012016. - Cited References: 26. - The reported study was funded by RFBR according to the research project No 20-52-00005 Bel_a . - ISSN 1757-8981. - ISSN 1757-899X
Аннотация: The effect of anionic substitution on the structural, magnetic, and kinetic properties of chalcogenides of the MnSe1-XTeX system in the temperature range of 77-400K in magnetic fields up to 12 kOe was studied. With an increase in the substitution concentration, changes in the structural and magnetic characteristics, which correlate with changes in the electronic structure, were found. The type and mobility of the main current carriers were determined from the Hall effect measurements.

https://doi.org/10.1088/1757-899X/1230/1/012016
Держатели документа:
Reshetnev Siberian State University of Science and Technology, 31 Krasnoyarskii rabochii prospekt, Krasnoyarsk, 660037, Russia
Kirensky Institute of Physics SB RAS, 50/38 Akademgorodok St., Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Sitnikov, M. N.; Loginov, Yu. Yu.; Abdelbaki, H.; Reshetnev Readings 2019(11-15 November 2019 ; Krasnoyarsk, Russian Federation)
}
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20.

    Single crystals of EuScCuSe3: Synthesis, experimental and DFT investigations / M. V. Grigoriev, A. V. Ruseikina, V. A. Chernyshev [et al.] // Materials. - 2023. - Vol. 16, Is. 4. - Ст. 1555, DOI 10.3390/ma16041555. - Cited References: 39. - This research was funded by the Tyumen Oblast Government as part of the West-Siberian Interregional Science and Education Center’s project No. 89-DON (3). The work was supported by The Ministry of Science and Higher Education of the Russian Federation, project, No. FEUZ-2023-0017 . - ISSN 1996-1944
   Перевод заглавия: Монокристаллы EuScCuSe3: синтез, экспериментальные и DFT-исследования
Кл.слова (ненормированные):
quaternary chalcogenides -- crystal structure -- DFT calculations -- semiconductors -- vibrational spectroscopy
Аннотация: EuScCuSe3 was synthesized from the elements for the first time by the method of cesium-iodide flux. The crystal belongs to the orthorhombic system (Cmcm) with the unit cell parameters a = 3.9883(3) Å, b = 13.2776(9) Å, c = 10.1728(7) Å, V = 538.70(7) Å3. Density functional (DFT) methods were used to study the crystal structure stability of EuScCuSe3 in the experimentally obtained Cmcm and the previously proposed Pnma space groups. It was shown that analysis of elastic properties as Raman and infrared spectroscopy are powerless for this particular task. The instability of EuScCuSe3 in space group Pnma space group is shown on the basis of phonon dispersion curve simulation. The EuScCuSe3 can be assigned to indirect wide-band gap semiconductors. It exhibits the properties of a soft ferromagnet at temperatures below 2 K.

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Держатели документа:
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen 625003, Russia
Institute of Inorganic Chemistry, University of Stuttgart, D-70569 Stuttgart, Germany
Institute of Natural Sciences and Mathematics, Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira Str. 19, Ekaterinburg 620002, Russia
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
School of Engineering and Construction, Siberian Federal University, Krasnoyarsk 660041, Russia
Institute of Physics and Technology, University of Tyumen, Tyumen 625003, Russia
Institute of Engineering Physics and Radioelectronic of Siberian State University, Krasnoyarsk 660041, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Department of Physics, Far Eastern State Transport University, Khabarovsk 680021, Russia

Доп.точки доступа:
Grigoriev, Maxim V.; Ruseikina, Anna V.; Chernyshev, Vladimir A.; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Garmonov, Alexander A.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Locke, Ralf J. C.; Elyshev, Andrey V.; Schleid, Thomas
}
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