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  1. No Access

    Article

    Ferromagnetism of Graphite Nanopowders with Cobalt Oxide Impurity and Its Evolution at Moderate Annealing

    A study of the influence of a small impurity of cobalt oxide CoO on the magnetic properties of graphite nanopowder is presented in this article. It is shown that such an impurity is responsible for the weak fe...

    M. Saad, A. G. Kiiamov, S. I. Nikitin… in Inorganic Materials: Applied Research (2023)

  2. Article

    Open Access

    Classical Density Functional Theory Approach to the Vibrational Properties and Lattice Specific Heat of a Quasi-One-Dimensional Antiferromagnet KFeSe2

    We have performed ab initio calculations of vibrational properties of KFeSe2 compound utilizing density functional theory. Total and element specific phonon densities of states have been calculated within a direc...

    M. D. Kuznetsov, A. G. Kiiamov, D. A. Tayurskii in JETP Letters (2022)

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  3. No Access

    Article

    On the Ab Initio DFT + U Calculations of the Physical Properties of a Compound with Strong Electron–Electron Correlations by the Case of KFeS2

    The magnetic and electronic properties of quasi-one-dimensional iron chalcogenide compound KFeS2 have been calculated within two DFT + U approaches based on the simplified LSDA + U approach and rotationally invar...

    A. G. Kiiamov, M. D. Kuznetsov, R. G. Batulin, D. A. Tayurskii in JETP Letters (2022)

  4. No Access

    Article

    Simulation of Quasi-One-Dimensional Wigner Solid Melting in a Parabolic Confinement

    A computer simulation of a quasi-one-dimensional Coulomb crystal in a parabolic confinement has been carried out using molecular dynamics. The melting transition has been investigated and critical temperatures...

    M. Y. Zakharov, N. R. Beysengulov, Yu. Lysogorskiy, D. A. Tayurskii in JETP Letters (2019)

  5. No Access

    Article

    DFT and Mössbauer Spectroscopy Study of a FeTe0.5Se0.5 Single Crystal

    The iron based superconductor FeSe0.5Te0.5 has been studied applying Mössbauer spectroscopy and ab initio density functional theory calculations of hyperfine parameters of iron nuclei. It has been shown that the ...

    A. G. Kiiamov, D. A. Tayurskii, F. G. Vagizov, D. Croitori, V. Tsurkan… in JETP Letters (2019)

  6. No Access

    Article

    Ferromagnetism and Persistent Currents in Finely Dispersed Highly Oriented Pyrolytic Graphite Samples

    Synthesis of finely dispersed graphite powders is described and results of their investigations by the methods of electron microscopy and magnetometry are presented. The samples have been prepared from crystal...

    M. Saad, I. F. Gilmutdinov, A. M. Rogov, S. I. Nikitin… in Russian Physics Journal (2018)

  7. No Access

    Article

    Electronic Properties of a Two-Dimensional Electron Gas at the Interface between Transition Metal Complex Oxides

    The structural and electronic properties of heterostructures based on transition metal oxides containing strongly correlated electrons are compared. The investigated structures are LaAlO3/SrTiO3 (LAO/STO), LaAlO3

    I. I. Piyanzina, Yu. V. Lysogorskiy… in Bulletin of the Russian Academy of Science… (2018)

  8. No Access

    Article

    Observation of Persistent Currents in Finely Dispersed Pyrolytic Graphite

    The trapped magnetic flux in the finely ground pyrolytic graphite sample annealed at 670 K in air has been observed. Flux trap** occurs on cooling of the sample from room temperature to 10 K in a magnetic fi...

    M. Saad, I. F. Gilmutdinov, A. G. Kiiamov, D. A. Tayurskii, S. I. Nikitin… in JETP Letters (2018)

  9. No Access

    Article

    Coherent X-ray diffraction imaging of nanoengineered polymeric capsules

    For the first time, nanoengineered polymeric capsules and their architecture have been studied with coherent X-ray diffraction imaging technique. The use of coherent X-ray diffraction imaging technique allowed...

    S. Erokhina, L. Pastorino, D. Di Lisa, A. G. Kiiamov, A. R. Faizullina… in JETP Letters (2017)

  10. No Access

    Article

    Two-dimensional electron gas at the interface of Ba0.8Sr0.2TiO3 ferroelectric and LaMnO3 antiferomagnet

    The temperature dependence of the electrical resistance has been studied for heterostructures formed by antiferromagnetic LaMnO3 single crystals of different orientations with epitaxial films of ferroelectric Ba0...

    D. P. Pavlov, I. I. Piyanzina, V. M. Mukhortov, A. M. Balbashov… in JETP Letters (2017)

  11. No Access

    Article

    Ab Initio Study of Deformation Influence on the Electronic Properties of Graphene Structures Containing One-Dimensional Topological Defects

    The band structures of single and bilayer graphene with one-dimensional topological defects were calculated along the defect line, and appearance of the flat band near the Fermi level was observed. In addition...

    A. A. Valishina, Y. V. Lysogorskiy, O. V. Nedopekin… in Journal of Low Temperature Physics (2016)

  12. No Access

    Article

    Analysis of Electronic and Structural Properties of Surfaces and Interfaces Based on LaAlO \( _{3} \) and SrTiO \( _{3}\)

    Recently, it was established that a two-dimensional electron system can arise at the interface between two oxide insulators LaAlO $$_{3...

    I. I. Piyanzina, Yu. V. Lysogorskiy, I. I. Varlamova… in Journal of Low Temperature Physics (2016)

  13. No Access

    Article

    Phenomenological model of relaxor behavior

    A phenomenological model is proposed for describing the behavior of ferroelectrics with the diffuse phase transition near the permittivity maximum in the low-temperature phase. The behavior in this temperature...

    R. F. Mamin, D. A. Tayurskii in Bulletin of the Russian Academy of Sciences: Physics (2016)

  14. No Access

    Article

    Transport of electrons on liquid helium in a microchannel device near the current threshold

    We study the transport of strongly interacting electrons on the surface of liquid helium confined in a microchannel geometry, near the current threshold point. The current threshold depends on the electrostati...

    N. R. Beysengulov, D. G. Rees, D. A. Tayurskii, K. Kono in JETP Letters (2016)

  15. No Access

    Article

    Structural Transitions in a Quasi-1D Wigner Solid on Liquid Helium

    We present a detailed study of structural transitions of an electron system on liquid helium in quasi-1D confinement geometry. The structural transitions are experimentally observed as current oscillations in ...

    N. R. Beysengulov, D. G. Rees, Yu. Lysogorskiy… in Journal of Low Temperature Physics (2016)

  16. No Access

    Article

    Clifford numbers from Bohr–Sommerfeld quantization of Grassmann-variant systems

    Bohr–Sommerfeld quantization is discussed for Grassmann-variant fermionic degrees of freedom. It is shown that this procedure applied to a Grassmannian dynamical variable of the Majorana type gives rise to a C...

    S. Abe, D. A. Tayurskii in JETP Letters (2015)

  17. No Access

    Article

    Vibrational and magnetic properties of crystalline CuTe2O5

    In the present work we have performed an ab initio calculation of vibrational properties of CuTe2O5 by means of density functional theory (DFT) method. One has compared calculated values with known experimental d...

    Y. V. Lysogorskiy, R. M. Eremina, T. P. Gavrilova, O. V. Nedopekin… in JETP Letters (2015)

  18. No Access

    Article

    On the superconductivity of graphite interfaces

    We propose an explanation for the appearance of superconductivity at the interfaces of graphite with Bernal stacking order. A network of line defects with flat bands appears at the interfaces between two sligh...

    P. Esquinazi, T. T. Heikkilä, Y. V. Lysogorskiy, D. A. Tayurskii… in JETP Letters (2014)

  19. No Access

    Article

    Ab initio investigation of phonon spectra in GdLiF4 compound under hydrostatic pressure

    Employing density functional theory (DFT) within the generalized gradient approximation, the GdLiF4 structure has been studied for a pressure range from 0 to 12 GPa. The influence of pressure on the lattice vibra...

    A. V. Petrova, B. Minisini, O. V. Nedopekin, D. A. Tayurskii in Optics and Spectroscopy (2014)

  20. No Access

    Article

    A Study of Mechanochemical Do** of Fluoride Crystals with a Fluorite Structure by Er3+ Ions via Electron Paramagnetic Resonance Spectra

    Using electron paramagnetic resonance (EPR) spectroscopy, we have shown that, upon mecha- noactivated do** of powders of compounds CaF2, SrF2, and BaF2 with Er3+ ions, impurity centers of single erbium ions wit...

    I. A. Irisova, A. A. Rodionov, D. A. Tayurskii, R. V. Yusupov in Optics and Spectroscopy (2014)

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