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Ovchinnikov Sergei Gennad'evich

Publications in Math-Net.Ru

  1. Ising superconductivity

    UFN, 195:6 (2025),  569–583
  2. Structural diversity and phase transitions in Mg$_{2-x}$Mn$_{1+x}$BO$_5$ ($x=0.0,0.2,0.4$) borates with a mixed valence

    Pis'ma v Zh. Èksper. Teoret. Fiz., 120:7 (2024),  530–538
  3. Interrelation between doping dependencies of the spin susceptibility and electronic structure in cuprates

    Pis'ma v Zh. Èksper. Teoret. Fiz., 120:1 (2024),  45–48
  4. Effect of the cobalt concentration on the magnetic properties of Co$_{1-x}$Mg$_{x}$Fe$_2$O$_4$ nanocrystals

    Pis'ma v Zh. Èksper. Teoret. Fiz., 119:2 (2024),  111–117
  5. Magnetic structure and the spin-crossover mechanism in ludwigite Со$_3$BO$_5$

    Pis'ma v Zh. Èksper. Teoret. Fiz., 118:5 (2023),  323–329
  6. Photoinduced enhancement of the excitonic order in strongly correlated electron systems with the spin crossover

    Pis'ma v Zh. Èksper. Teoret. Fiz., 117:12 (2023),  919–928
  7. Correlation between magnetic and electric properties in the series of Co$_x$Zn$_{1-x}$Fe$_2$O$_4$ nanoparticles

    Pis'ma v Zh. Èksper. Teoret. Fiz., 117:10 (2023),  765–769
  8. Excitonic order in strongly correlated systems with the spin crossover

    Pis'ma v Zh. Èksper. Teoret. Fiz., 117:9 (2023),  704–711
  9. Auger electron spectroscopy of the air-exposed (Cr$_{0.5}$Mn$_{0.5}$)$_2$GaC MAX film surface

    Pisma v Zhurnal Tekhnicheskoi Fiziki, 49:14 (2023),  22–27
  10. Features of spin crossovers in magnetic materials

    UFN, 193:7 (2023),  689–716
  11. Exchange interaction in LaCoO$_3$ between cobalt ions Co$^{3+}$ in different spin states

    Fizika Tverdogo Tela, 64:12 (2022),  1916–1919
  12. Magnetic properties of FeBO$_3$ in the low-spin state

    Pis'ma v Zh. Èksper. Teoret. Fiz., 116:8 (2022),  556–562
  13. On the possible magnetic properties of ultrathin Mn$_2$GaC films on Al$_2$O$_3$ substrates

    Pis'ma v Zh. Èksper. Teoret. Fiz., 116:5 (2022),  318–323
  14. Fluctuations of the multiplicity of Co$^{3+}$ ions and softening of the phonon spectrum of rare-earth cobalt oxides

    Pis'ma v Zh. Èksper. Teoret. Fiz., 115:10 (2022),  650–655
  15. Why the magnetite–gold core–shell nanoparticles are not quite good and how to improve them

    Fizika Tverdogo Tela, 63:9 (2021),  1367–1371
  16. The magneto-optical voigt parameter from magneto-optical ellipsometry data for multilayer samples with single ferromagnetic layer

    Fizika Tverdogo Tela, 63:9 (2021),  1311
  17. Role of interfaces in the permittivity tensor of thin layers of a ferromagnetic metal

    Pis'ma v Zh. Èksper. Teoret. Fiz., 114:3 (2021),  192–195
  18. Spin-flop transition in Co$_2$B$_2$O$_5$ pyroborate

    Pis'ma v Zh. Èksper. Teoret. Fiz., 114:2 (2021),  89–95
  19. Ultrafast quantum relaxation dynamics of magnetically ordered systems with spin crossover in an excited state under a sudden perturbation

    Pis'ma v Zh. Èksper. Teoret. Fiz., 112:4 (2020),  268–274
  20. Mechanisms of the insulator–metal transition and spin crossover in CoO at high pressure

    Pis'ma v Zh. Èksper. Teoret. Fiz., 112:4 (2020),  258–262
  21. Spin accumulation in the Fe$_{3}$Si/$n$-Si epitaxial structure and related electric bias effect

    Pisma v Zhurnal Tekhnicheskoi Fiziki, 46:13 (2020),  43–46
  22. Experimental and theoretical in situ spectral magneto-ellipsometry study of layered ferromagnetic structures

    Pis'ma v Zh. Èksper. Teoret. Fiz., 110:3 (2019),  155–162
  23. Proximity of ferromagnetic nickel to paramagnetic instability

    Pis'ma v Zh. Èksper. Teoret. Fiz., 109:4 (2019),  265–268
  24. Effect of the interatomic exchange interaction on the magnetic phase transitions in spin crossover systems under high-pressure

    Fizika Tverdogo Tela, 60:6 (2018),  1166–1168
  25. Effects of optical intra-gap transitions on superexchange interaction in La$ _2$CuO$ _4$ with nonequilibrium photoexcited centers

    J. Sib. Fed. Univ. Math. Phys., 11:2 (2018),  159–170
  26. Self-consistent mapping of the ab initio calculations to the multi-orbital p-d-model: Magnetism in $\alpha$-FeSi$_2$ films as effect of local environment

    Pis'ma v Zh. Èksper. Teoret. Fiz., 106:9 (2017),  567–568
  27. Magnetic and structural phase transitions in systems with spin crossover under pressure

    Pis'ma v Zh. Èksper. Teoret. Fiz., 105:12 (2017),  732–736
  28. Two-layer model of reflective ferromagnetic films in terms of magneto-optical ellipsometry studies

    J. Sib. Fed. Univ. Math. Phys., 10:2 (2017),  223–232
  29. Iron silicide-based ferromagnetic metal/semiconductor nanostructures

    Fizika Tverdogo Tela, 58:11 (2016),  2195–2199
  30. Weak ferromagnetism along the triad axis of FeBO$_{3}$ crystals

    Fizika Tverdogo Tela, 58:10 (2016),  1926–1929
  31. Anomalies of the electronic structure and physical properties of rare-earth cobaltites near spin crossover

    Pis'ma v Zh. Èksper. Teoret. Fiz., 104:8 (2016),  604–616
  32. Thermal properties of rare earth cobalt oxides and of La$_{1-x}$Gd$_{x}$CoO$_3$ solid solutions

    Pis'ma v Zh. Èksper. Teoret. Fiz., 103:9 (2016),  689–694
  33. Crystal structure and electronic states of Co and Gd ions in a Gd$_{0.4}$Sr$_{0.6}$CoO$_{2.85}$ single crystal

    Pis'ma v Zh. Èksper. Teoret. Fiz., 103:3 (2016),  214–219
  34. Giant red shift of the absorption spectra due to nonstoichiometry in GdCoO$_{3-\delta}$

    Pis'ma v Zh. Èksper. Teoret. Fiz., 103:3 (2016),  177–183
  35. Influence of varying magnetic order in external magnetic field on the electronic structure and Fermi surface within the $t$–$J$ model

    Pis'ma v Zh. Èksper. Teoret. Fiz., 103:2 (2016),  132–137
  36. Theoretical study of $\gamma'$-Fe$_4$N and $\varepsilon$-Fe$_x$N iron nitrides at pressures up to 500 GPa

    Pis'ma v Zh. Èksper. Teoret. Fiz., 101:6 (2015),  405–409
  37. Cluster perturbation theory for 2d Ising model

    J. Sib. Fed. Univ. Math. Phys., 8:1 (2015),  31–37
  38. Solid-phase synthesis of manganese silicides on the Si(100)2 $\times$ 1 surface

    Fizika Tverdogo Tela, 56:4 (2014),  779–782
  39. Uniaxial magnetic anisotropy of rhombohedral CoCO$_3$ crystals at $T$ = 0 K

    Fizika Tverdogo Tela, 56:3 (2014),  459–462
  40. Initial growth stages of manganese films on the Si(100)2 $\times$ 1 surface

    Fizika Tverdogo Tela, 56:2 (2014),  375–379
  41. Analysis of the structure and magnetic properties of an interface in multilayered (Fe/Si)$_N$ nanostructures with the surface-sensitive XMCD metho

    Pis'ma v Zh. Èksper. Teoret. Fiz., 99:12 (2014),  817–823
  42. Optical characteristics of an epitaxial Fe$_3$Si/Si(111) iron silicide film

    Pis'ma v Zh. Èksper. Teoret. Fiz., 99:10 (2014),  651–655
  43. Study of the structural and magnetic characteristics of epitaxial Fe$_3$Si/Si(111) films

    Pis'ma v Zh. Èksper. Teoret. Fiz., 99:9 (2014),  610–613
  44. Temperature dependence of the spin state of a Co$^{3+}$ Ion in RCoO$_3$ ($R$ = La, Gd) cobaltites

    Pis'ma v Zh. Èksper. Teoret. Fiz., 99:8 (2014),  547–551
  45. Ellipsometric technique for determining in situ the absorption coefficient of semiconducting nanolayers

    Zhurnal Tekhnicheskoi Fiziki, 84:5 (2014),  109–112
  46. Exact solution for the thermodynamics of the one-dimensional Hubbard model with infinite repulsion in a magnetic field

    TMF, 180:1 (2014),  94–111
  47. Anisotropic interactions in magnetic crystals with S-state ions. Nanostructures

    UFN, 184:12 (2014),  1299–1318
  48. Phase transformations of Fe$_3$N-Fe$_4$N iron nitrides at pressures up to $30$ GPa studied by in situ X-ray diffractometry

    Pis'ma v Zh. Èksper. Teoret. Fiz., 98:12 (2013),  907–911
  49. Magnetic circular dichroism and the nature of ferromagnetism in colloidal gold nanoparticles

    Pis'ma v Zh. Èksper. Teoret. Fiz., 97:2 (2013),  104–107
  50. In situ investigations of magneto-optical properties of thin Fe layers

    Zhurnal Tekhnicheskoi Fiziki, 83:10 (2013),  139–142
  51. Effect of the diamagnetic dilution on the magnetic ordering and electrical conductivity in the Co$_3$O$_2$BO$_3$: Ga ludwigite

    Fizika Tverdogo Tela, 54:11 (2012),  2080–2088
  52. Antiferromagnetic ordering in REM cobaltite GdCoO$_3$

    Fizika Tverdogo Tela, 54:1 (2012),  74–78
  53. Identification of local magnetic contributions in a Co$_{2}$FeBO$_{5}$ single crystal by XMCD spectroscopy

    Pis'ma v Zh. Èksper. Teoret. Fiz., 96:10 (2012),  723–727
  54. Electronic structure and properties of high-$T_C$ superconducting cuprates in the normal and superconducting phases within the LDA + GTB approach

    Pis'ma v Zh. Èksper. Teoret. Fiz., 96:5 (2012),  381–394
  55. Metallic layer inside the Earth's lower mantle

    Pis'ma v Zh. Èksper. Teoret. Fiz., 96:2 (2012),  135–138
  56. Theoretical study of the magnetic properties of ordered vacancies in 2D hexagonal structures: Graphene, 2D-SiC, and h-BN

    Pis'ma v Zh. Èksper. Teoret. Fiz., 95:11 (2012),  633–637
  57. Contribution of the non-Heisenberg ring exchange to the magnetic mechanism of high-Tc superconductivity

    Pis'ma v Zh. Èksper. Teoret. Fiz., 95:4 (2012),  211–215
  58. Theoretical study of the diffusion of lithium in crystalline and amorphous silicon

    Pis'ma v Zh. Èksper. Teoret. Fiz., 95:3 (2012),  159–163
  59. Features of the structure and properties of $\beta$-FeSi$_2$ nanofilms and a $\beta$-FeSi$_2$/Si interface

    Pis'ma v Zh. Èksper. Teoret. Fiz., 95:1 (2012),  23–28
  60. Renormalization-group analysis of 1D Hubbard model

    J. Sib. Fed. Univ. Math. Phys., 5:2 (2012),  223–229
  61. Quick ellipsometric technique for determining the thicknesses and optical constant profiles of Fe/SiO$_2$/Si(100) nanostructures during growth

    Zhurnal Tekhnicheskoi Fiziki, 82:9 (2012),  44–48
  62. Forming interface in Pd/Fe/GaAs/InGaAs structure for optical detector of free-electron spin

    Pisma v Zhurnal Tekhnicheskoi Fiziki, 38:1 (2012),  27–36
  63. Anomalous thermodynamics of the doped Mott–Hubbard insulators

    Fizika Tverdogo Tela, 53:2 (2011),  280–283
  64. Spatial structure of superconducting correlations of $d_{x^2-y^2}$ symmetry in high-temperature superconductors

    Fizika Tverdogo Tela, 53:2 (2011),  228–230
  65. Electron transport in FeBO$_3$ ferroborate at ultrahigh pressures

    Pis'ma v Zh. Èksper. Teoret. Fiz., 94:10 (2011),  811–815
  66. Metallization and spin crossover in Magnesiowьstite (Mg$_{1-x}$Fe$_x$O) at high pressures

    Pis'ma v Zh. Èksper. Teoret. Fiz., 94:3 (2011),  210–214
  67. The calculation of the Fermi surface with complex topology from norm-conserving cluster perturbation theory for doping dependent electronic structure of the Hubbard model

    Pis'ma v Zh. Èksper. Teoret. Fiz., 93:9 (2011),  575–578
  68. Effect of interlayer single-particle hoppings on the superconducting transition temperature

    Pis'ma v Zh. Èksper. Teoret. Fiz., 93:6 (2011),  372–377
  69. Crystal structure and magnetism of $\mathrm{Co}_{2-x}\mathrm{Ni}_x\mathrm{B_2O_5}$ pyroborate

    J. Sib. Fed. Univ. Math. Phys., 4:3 (2011),  298–307
  70. Role of four-spin exchange in a magnetic mechanism of superconductivity in cuprates

    J. Sib. Fed. Univ. Math. Phys., 4:2 (2011),  191–194
  71. Theoretical investigation of $\mathrm{FeSi_2}$ nanofilms and interface silicon/iron silicide

    J. Sib. Fed. Univ. Math. Phys., 4:2 (2011),  182–190
  72. Cluster perturbation theory for the Hubbard model: the pinning of chemical potential

    J. Sib. Fed. Univ. Math. Phys., 4:2 (2011),  162–167
  73. New opportunities for quantitative analysis as applied to reflected electron energy loss spectroscopy of Fe/Si structures

    Zhurnal Tekhnicheskoi Fiziki, 81:5 (2011),  69–74
  74. Magnetoresistance of LaCoO$_3$ and an insulator-metal transition induced in it by a high magnetic field

    Pis'ma v Zh. Èksper. Teoret. Fiz., 92:9 (2010),  678–682
  75. Effect of electron correlations on the structure of photoprotein substrates

    Pis'ma v Zh. Èksper. Teoret. Fiz., 91:9 (2010),  536–540
  76. Ellipsometer Mounting System Design Using CAD

    J. Sib. Fed. Univ. Math. Phys., 3:1 (2010),  118–124
  77. Spin crossover: the quantum phase transition induced by high pressure

    Pis'ma v Zh. Èksper. Teoret. Fiz., 90:7 (2009),  580–583
  78. Experimental observation of the virtual electronic states of a mott-Hubbard insulator FeBO$_3$ in infrared absorption spectra

    Pis'ma v Zh. Èksper. Teoret. Fiz., 90:7 (2009),  569–573
  79. Reconstruction of the Fermi surface of HTSC cuprates in a high magnetic field

    Pis'ma v Zh. Èksper. Teoret. Fiz., 89:12 (2009),  736–741
  80. The features of spin, charge and orbital orderings in the cobaltites

    UFN, 179:8 (2009),  837–860
  81. Electronic transitions in the VBO3 single crystal at high pressures

    Pis'ma v Zh. Èksper. Teoret. Fiz., 88:11 (2008),  877–882
  82. Room temperature ferromagnetism of a double-layer Dy1−xNix/Ni structure: in situ magneto-optical measurements

    Pis'ma v Zh. Èksper. Teoret. Fiz., 88:2 (2008),  152–154
  83. Pressure-induced electron spin transition in the paramagnetic phase of the GdFe3(BO3)4 Heisenberg magnet

    Pis'ma v Zh. Èksper. Teoret. Fiz., 84:9 (2006),  610–615
  84. Phonon and magnetic pairing mechanisms in high-temperature superconductors in the strong correlation limit

    Pis'ma v Zh. Èksper. Teoret. Fiz., 83:9 (2006),  462–466
  85. Strong spin triplet contribution of the first removal state in the insulating regime of Bi$_2$Sr$_2$Ca$_{1- x}$Y$_x$Cu$_2$O$_{8+\delta}$

    Pis'ma v Zh. Èksper. Teoret. Fiz., 80:11 (2004),  819–823
  86. Effect of the ferromagnetic layer thickness on the interlayer interaction in Fe/Si/Fe trilayers

    Pis'ma v Zh. Èksper. Teoret. Fiz., 80:7 (2004),  560–562
  87. Structural and electronic transitions in gadolinium iron borate GdFe3(BO3)4 at high pressures

    Pis'ma v Zh. Èksper. Teoret. Fiz., 80:6 (2004),  482–488
  88. Effective Hamiltonian and properties of the normal and superconducting phases of n-type cuprates

    Pis'ma v Zh. Èksper. Teoret. Fiz., 80:1 (2004),  45–49
  89. Many-electron model of band structure and metal-insulator transition under pressure in FeBO$_{3}$

    Pis'ma v Zh. Èksper. Teoret. Fiz., 77:12 (2003),  808–811
  90. Exotic superconductivity and magnetism in ruthenates

    UFN, 173:1 (2003),  27–50
  91. The strong effect of three-center interactions on the formation of superconductivity with $\mathbf{d_{x^2-y^2}}$ symmetry in the $\mathbf{t-J^*}$ model

    Pis'ma v Zh. Èksper. Teoret. Fiz., 75:8 (2002),  450–454
  92. New magnetically ordered CoBO$_3$ crystal

    Pis'ma v Zh. Èksper. Teoret. Fiz., 74:2 (2001),  86–87
  93. Electronic structure and order parameter symmetry in high-temperature superconductors

    UFN, 170:2 (2000),  189–192
  94. Application of synchrotron radiation to the study of magnetic materials

    UFN, 169:8 (1999),  869–887
  95. Quasiparticles in strongly correlated electron systems in copper oxides

    UFN, 167:10 (1997),  1043–1068
  96. Quantum oscillations of resistance and magnetization in magnetic semiconductors and semimetals

    UFN, 167:9 (1997),  1016–1019
  97. Electric and magnetic properties of $\mathrm{MeS}\cdot \mathrm{Fe}_{2}\mathrm{O}_{3}$ oxysulfides

    Fizika Tverdogo Tela, 34:6 (1992),  1765–1769
  98. Metal– dielectric concentration transition and magnetic order in $\mathrm{Fe}_{x}\mathrm{Mn}_{1-x}\mathrm{S}$ system

    Fizika Tverdogo Tela, 33:11 (1991),  3420–3422
  99. Magnetic properties of an easy-axis antiferromagnetic chain in the quantum Monte Carlo method

    Fizika Tverdogo Tela, 33:4 (1991),  1061–1068
  100. PROPERTIES OF NONMAGNETIC-FE3O4 MAGNETIC SEMICONDUCTOR HETEROSTRUCTURE IN METAL-DIELECTRIC JUNCTIONS

    Zhurnal Tekhnicheskoi Fiziki, 61:6 (1991),  201–203
  101. Density of states and light absorption in the ferromagnetic semiconductor $\mathrm{CdCr}_{2}\mathrm{S}_{4}$

    Fizika Tverdogo Tela, 32:10 (1990),  2931–2932
  102. Excitation spectrum of dimerized antiferromagnetic Heisenberg chain

    Fizika Tverdogo Tela, 32:7 (1990),  2001–2003
  103. Effect of strong crystalline field on the spectral properties of magnets with biquadratic exchange

    Fizika Tverdogo Tela, 31:6 (1989),  60–68
  104. Exact quasiparticle spectrum in a ferromagnetic semiconductor within the Anderson periodic model

    Fizika Tverdogo Tela, 31:5 (1989),  52–57
  105. Metal–insulator transition and antiferromagnetic order in $\mathrm{Cr}_{x}\mathrm{Mn}_{1-x}\mathrm{S}$

    Fizika Tverdogo Tela, 31:3 (1989),  45–49
  106. Impurity states and resonance properties of ferromagnetic semiconductors

    Fizika Tverdogo Tela, 31:1 (1989),  33–39
  107. Two-magnon excitation spectrum in an easy axis quasi two-dimensional ferromagnet

    Fizika Tverdogo Tela, 30:10 (1988),  3044–3047
  108. Acoustic wave amplification in fast crystallization

    Fizika Tverdogo Tela, 30:1 (1988),  184–186
  109. Gauge theory of amorphous magnets

    TMF, 76:1 (1988),  58–65
  110. Dielectric constant of thin magnetite films in the low temperature phase

    Fizika Tverdogo Tela, 29:11 (1987),  3516–3518
  111. Spin-wave theory of easy-axis quasitwo-dimensional Heisenberg antiferromagnets

    Fizika Tverdogo Tela, 29:6 (1987),  1866–1868
  112. Metal-exciton insulator transition in magnetite

    Fizika Tverdogo Tela, 29:6 (1987),  1758–1762
  113. Photoconductivity of $\alpha$-$\mathrm{MnS}$ and $\mathrm{MnO}$

    Fizika Tverdogo Tela, 29:6 (1987),  1625–1628
  114. Density of states and absorption spectrum of the ferromagnetic semiconductor $\mathrm{HgCr}_{2}\mathrm{Se}_{4}$

    Fizika Tverdogo Tela, 29:2 (1987),  527–529
  115. Carrier energy fluctuation shift in wide-gap antiferromagnetic semiconductors

    Fizika Tverdogo Tela, 28:8 (1986),  2306–2309
  116. Specific features of electric conduction in $\alpha$-$\mathrm{Mn}_{x}\mathrm{S}$ antiferromagnetic semiconductors

    Fizika Tverdogo Tela, 28:7 (1986),  2048–2052
  117. Elementary excitations in anisotropic narrow-band magnetic semiconductors

    TMF, 67:2 (1986),  237–251
  118. Поправки к статье “Основные представления о переходах металл-диэлектрик в соединениях 3d-металлов”

    UFN, 149:2 (1986),  356
  119. Fundamental ideas on metal-dielectric transitions in 3d-metal compounds

    UFN, 148:4 (1986),  603–636
  120. Spin fluctuation effect on absorption spectrum of magnetic semiconductor

    Fizika Tverdogo Tela, 27:12 (1985),  3628–3634
  121. Vervey point oscillations in magnetite film in strong electric field

    Fizika Tverdogo Tela, 27:11 (1985),  3487–3490
  122. Quantum peculiarities of magnetic susceptibility of anisotropic ferromagnets

    Fizika Tverdogo Tela, 27:1 (1985),  241–242
  123. Some peculiarities of NMR in ferromagnetics with mixed valency

    Fizika Tverdogo Tela, 26:2 (1984),  490–495
  124. Metal–dielectric transition in the $\mathrm{Fe}_{x}\mathrm{Mn}_{1-x}\mathrm{S}$ system

    Fizika Tverdogo Tela, 25:12 (1983),  3717–3719
  125. Metal-nonmetal transition in vanadium monosulfide

    Fizika Tverdogo Tela, 25:10 (1983),  3165–3167
  126. Quantum size effect in magnetite thin films

    Fizika Tverdogo Tela, 25:6 (1983),  1896–1898
  127. Hubbard operators and spin-wave theory of Heisenberg magnets with arbitrary spin

    TMF, 50:3 (1982),  466–476
  128. Electron correlations in a Hubbard antiferromagnetic semiconductor. Weak coupling

    TMF, 31:3 (1977),  379–391

  129. Vladimir Moiseevich Pudalov (on his 80th birthday)

    UFN, 195:10 (2025),  1129–1130
  130. In memory of Eduard Leonovich Nagaev

    UFN, 172:5 (2002),  615–616
  131. Фазовые переходы I рода и критические явления в ограниченных системах

    UFN, 146:4 (1985),  724

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