Department of Magnetism

VLADIMIR P. GNEZDILOV


B. Verkin Institute for Low Temperature Physics and

Engineering of the National Academy of Science of Ukraine

47 Nauky Ave., Kharkiv, 61103 Ukraine

Telephone

+38(057)341-09-75 (office)

+38(067)702-10-68 (mobile)

Fax

+38(057)340-33-70

E-mail

gnezdilov@ilt.kharkov.ua


PERSONAL DATA




Name

VLADIMIR PETROVICH GNEZDILOV

Date of birth

06/02/1948

Place of birth

Kharkiv, Ukraine

Residence

UKRAINE

Languages:

Russian, Ukrainian,English

(spoken, read and written)



EDUCATION




Name of Institution

Degrees

Field

Institute for Low Temperature Physics and Engineering,

National Academy of Sciences of Ukraine, Kharkiv

D.Sc. (Physics & Mathematics) (2014)

Magnetism

Institute for Low Temperature Physics and Engineering,

National Academy of Sciences of Ukraine, Kharkiv

Senior Researcher Diploma (1993)

Magnetism

Institute for Low Temperature Physics and Engineering,

National Academy of Sciences of Ukraine, Kharkiv

Ph.D. in Solid State Physics (1985)

Magnetism

Kharkiv Polytechnic Institute,

Physical & Technical Department

M.Sc. in Physics of metals  (1974)

Physics of metals


FIELD OF SCIENTIFIC INTEREST



  • Magnetism in low symmetry and low dimensional systems.
  • Lattice dynamics and phase transitions.
  • Structural and magnetic frustration.
  • Interplay of lattice, magnetic, charge and orbital degrees of freedom.

PROFESSIONAL EXPERIENCE



  • 2015-present: Leading Senior Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  • 1990-2015: Senior Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  • 1986-1990: Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  • 1985-1986: Junior Research Fellow in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine,  Kharkiv, Ukraine
  • 1978-1985: Senior Engineer in the Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
  • 1974-1978: Engineer in the the Laboratory at Department of Magnetism; B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Kharkiv, Ukraine
  • 1991-1992: Visiting Scientist,  Institute for Microstructural Sciences, NRC, Canada, (part time)
  • 1998-2002: Visiting Scientist,  Technical University Aachen, Germany, (part time)
  • 2003-2004: Visiting Scientist,  MPI Stuttgart, Germany, (part time)
  • since 2005: Visiting Scientist,  Technical University Braunschweig, Germany, since 2005, (part time)

AWARDS



  • 2018 - The Memorial Award in honor of "100th Anniversary of the National Academy of Sciences of Ukraine"
  • 2004 - State prize of Ukraine in field of science and technique for series of works "New optical and magneto-optical phenomena in antiferromagnets"

PUBLICATIONS




Number of papers : more then 200 ( in the refereed journals - 108).


Selected Publications for last 10 years:


  1. Magnetic and structural correlations in the warwickite Mn2OBO3

    V. Gnezdilov, Yu. Pashkevich, V. Kurnosov, O.V. Zhuravlev, D. Wulferding, P. Lemmens, N.V. Kazak, Yu.V. Knyazev, G. Ovchinnikov

    Low Temperature Physics, V. 45, P. 1046, (2019)

  2. Flat-band spin dynamics and phonon anomalies of the saw-tooth spin-chain system Fe2O(SeO3)2

    V.P. Gnezdilov, Yu.G. Pashkevich, V.S. Kurnosov, O.V. Zhuravlev, D. Wulferding, P. Lemmens, D. Menzel, E.S. Kozlyakova, A.Yu. Akhrorov, E.S. Kuznetsova, P.S. Berdonosov, V.A. Dolgikh, O.S. Volkova, A.N. Vasiliev

    Physical Review B, V. 99, 6, P. 064413, (2019)

  3. Synthesis and magnetic properties of the KCu(IO3)3 compound with (CuO5) chains

    E. Mitoudi-Vagourdi, J. Rienmuller, P. Lemmens, V.P. Gnezdilov, R.K. Kremer, M. Johnsson

    ACS Omega, V. 4, 12, P. 15168, (2019)

  4. Flat-band spin dynamics and phonon anomalies of the saw-tooth spin-chain system Fe2O(SeO3)2

    V.P. Gnezdilov, Yu.G. Pashkevich, V.S. Kurnosov, O.V. Zhuravlev, D. Wulferding, P. Lemmens, D. Menzel, E.S. Kozlyakova, A.Yu. Akhrorov, E.S. Kuznetsova, P.S. Berdonosov, V.A. Dolgikh, O.S. Volkova, A.N. Vasiliev

    Phys. Rev. B, V. 99, P. 064413, (2019)

  5. Lattice and magnetic instabilities in Cu3Bi(SeO3)2O2X (X=Br,Cl)

    V. Gnezdilov, Yu. Pashkevich, P. Lemmens, V. Kurnosov, P. Berdonosov, V. Dolgikh, E. Kuznetsova, V. Pryadun, K. Zakharov, A. Vasiliev

    Phys. Rev. B, V. 96, P. 115144, (2017)

  6. Phonon excitations in the quasi-one-dimensional Haldane phase of SrNi2V2O8

    V. Kurnosov, V. Gnezdilov, P. Lemmens, Yu. Pashkevich, A.K. Bera, A.T.M.N. Islam, B. Lake

    Low Temperature Physics, V. 43, P. 1405, (2017)

  7. Optical phonon dynamics and electronic fluctuations in the Dirac semimetal Cd3As2

    A. Sharafeev, V. Gnezdilov, R. Sankar, F.C. Chou, and P. Lemmens

    Phys. Rev. B, V. 95, P. 235148 (1-6), (2017)

  8. Electronic structure and magnetic properties of FeTe, BiFeO3, SrFe12O19 and SrCoTiFe10O19 compounds

    A.A. Lyogenkaya, G.E. Grechnev, O.V. Kotlyar, A.S. Panfilov, V.P. Gnezdilov

    , 61, c. 529-536, (2016)

  9. Phase separation in iron chalcogenide superconductor Rb(0.8+x)Fe(1.6+y)Se2 as seen by Raman light scattering and band structure calculations

    Yu. Pashkevich, V. Gnezdilov, P. Lemmens, T. Shevtsova, A. Gusev, K. Lamonova, D. Wulferding, S. Gnatchenko, E. Pomjakushina, K. Conder

    Low Temperature Physics, V. 42, P. 491, (2016)

  10. Features of the electronic structure of FeTe compound

    G.E. Grechnev, A.A. Lyogenkaya, A.S. Panfilov, A.V. Logosha, O.V. Kotlyar, V.P. Gnezdilov, I.P. Makarova, D.A. Chareev, E.S. Mitrofanova

    Low Temperature Physics, V. 41, P. 990, (2015)

  11. Crystal structure and magnetic properties of the S = ½ quantum spin system Cu7(TeO3)6F2 with Mixed Dimensionality

    Shichao Hu, Amber Mace, Mats Johnsson, Vladimir Gnezdilov, Peter Lemmens, Joshua Tapp, and Angela Möller

    Inorg. Chem., V. 53 (8), P. 42504256, (2014)

  12. Enhanced quasiparticle dynamics of quantum well states: The giant Rashba system BiTeI, and topological insulators

    V. Gnezdilov, P. Lemmens, D. Wulferding, A. Müoller, P. Recher, H. Berger, R. Sankar, F.C. Chou

    Phys. Rev. B, V. 89, P. 195117 (1-6), (2014)

  13. Interplay between lattice and spin states degree of freedom in the FeSe superconductor: Dynamic spin state instabilities

    V. Gnezdilov, Y.G. Pashkevich, P. Lemmens, D. Wulferding, T. Shevtsova, A. Gusev, D. Chareev, A. Vasiliev

    Phys. Rev. B, V. 87, P. 144508 (1-8), (2013)

  14. Enhanced low-energy fluctuations and increasing out-of-plane coherence in vacancy-ordered NaxCoO2

    P. Lemmens, V. Gnezdilov, G.J. Shu, L. Alff, C.T. Lin, B. Keimer, F.C. Chou

    Phys. Rev. B, V.88, P. 195151 (1-5), (2013)

  15. Thermal properties of layered cobaltites RBaCo2O5.5 (R = Y, Gd, and Tb)

    J. Wieckowski, M.U. Gutowska, A. Szewczyk, S. Lewinska, K. Conder, E. Pomjakushina, V.P. Gnezdilov, S.L. Gnatchenko

    Phys. Rev. B, V.86 , P. 054404 (1-9), (2012)

  16. Spin state of iron - controlling parameter of iron containing HTSC: dependence of ground state energy, phonon energies and positions of atoms on spin state of iron ion in FeTe

    Yu.G. Pashkevich, T.N. Shevtsova, A.A. Gusev, V.P. Gnezdilov, P. Lemmens

    Low Temperature Physics, V. 38, P. 900, (2012)

  17. Spin state of iron - controlling parameter of iron containing HTSC: dependence of ground state energy, phonon energies and positions of atoms on spin state of iron ion in FeTe

    Yu.G. Pashkevich, T.N. Shevtsova, A.A. Gusev, V.P. Gnezdilov, and P. Lemmens

    Low Temperature Physics, V. 38, P. 900, (2012)

  18. Analysis of the low-frequency spectrum of the cubic noncentrosymmetric ferrimagnet Cu2OSeO3

    V.S. Kurnosov, V.P. Gnezdilov, V.V. Tsapenko, P. Lemmens, H. Berger

    Low Temperature Physics, V. 38, P. 489, (2012)

  19. Low-dimensional magnetism of spin-½ chain systems α- and β-TeVO4: a comparative study

    V. Gnezdilov, P. Lemmens, D. Wulferding, Yu. Pashkevich, K. Lamonova, K.-Y. Choi, O. Afanasiev, S. Gnatchenko, H. Berger

    Low Temperature Physics, V. 38, 7, P. 559-569, (2012)

  20. Dynamical lattice instability versus spin liquid state in a frustrated spin chain system

    V. Gnezdilov, P. Lemmens, Yu.G. Pashkevich, D. Wulferding, I.V. Morozov, O.S. Volkova, A. Vasiliev

    Phys. Rev. B, V. 85, P. 214403 (1-6), (2012)

  21. Crossover from coherent to incoherent scattering in spin-orbit dominated Sr2IrO4

    M.F. Cetin, P. Lemmens, V. Gnezdilov, D. Wulferding, D. Menzel, T. Takayama, K. Ohashi, H. Takagi

    Phys. Rev. B, V. 85, P. 195148 (1-7), (2012)

  22. Coupling of spin and lattice modes in the S = ½ two-dimensional antiferromagnet K2V3O8 with magneto-dielectric couplings

    K.-Y. Choi, P. Lemmens, V.P. Gnezdilov, B.C. Sales, M.D. Lumsden

    Phys. Rev. B, V. 85, P. 114434 (1-6), (2012)

  23. Phononic and magnetic excitations in the quasi-one-dimensional Heisenberg antiferromagnet KCuF3

    V. Gnezdilov, J. Deisenhofer, P. Lemmens, D. Wulferding, O. Afanasiev, P. Ghigna, A. Loidl, A. Yeremenko

    Low Temperature Physics, V. 38, P. 419, (2012)

  24. Helical fluctuations in the Raman response of the topological insulator Bi2Se3

    V. Gnezdilov, Yu.G. Pashkevich, H. Berger, E. Pomjakushina, K. Conder, P. Lemmens

    Phys. Rev. B, V. 84, P. 195118 (1-5), (2011)

  25. Coupled spin-lattice fluctuations in a compound with orbital degrees of freedom: The Cr-based dimer system Sr3Cr2O8

    D. Wulferding, P. Lemmens, K.-Y. Choi, V. Gnezdilov, Y.G. Pashkevich, J. Deisenhofer, D. Quintero-Castro, A.T.M. Nazmul Islam, B. Lake

    Phys. Rev. B, V. 84, P. 064419 (1-7), (2011)

  26. Phonon anomalies and possible local lattice distortions in giant magnetocapacitive CdCr2S4

    V. Gnezdilov, P. Lemmens, Yu.G. Pashkevich, Ch. Payen, K.Y. Choi, J. Hemberger, A. Loidl, V. Tsurkan

    Phys. Rev. B, V. 84, P. 045106 (1-6), (2011)

  27. Anomalous optical phonons in FeTe chalcogenides: Spin state, magnetic order, and lattice anharmonicity

    V. Gnezdilov, Yu. Pashkevich, P. Lemmens, A. Gusev, K. Lamonova, T. Shevtsova, I. Vitebskiy, O. Afanasiev, S. Gnatchenko, V. Tsurkan, J. Deisenhofer, A. Loidl

    Phys. Rev. B, V. 83, P. 245127 (1-6), (2011)

  28. Magnetoelectricity in the ferrimagnetic Cu2OSeO3: symmetry analysis and Raman scattering study

    V.P. Gnezdilov, K.V. Lamonova, Yu.G. Pashkevich, P. Lemmens, H. Berger, F. Bussy, S.L. Gnatchenko

    Low Temperature Physics, V. 36, P. 550, (2010)

  29. One-magnon inelastic light scattering in the canted antiferromagnet NiF2

    E. Meloche, M.G. Cottam, V.P. Gnezdilov, D.J. Lockwod

    Phys. Rev. B, V. 81, P. 024426 (1-15), (2010)

  30. Optical phonons, spin correlations, and spin-phonon coupling in the frustrated pyrochlore magnets CdCr2O4 and ZnCr2O4

    Ch. Kant, J. Deisenhofer, T. Rudolf, F. Mayr, F. Schrettle, A. Loidl, V. Gnezdilov, D. Wulferding, P. Lemmens, V. Tsurkan

    Phys. Rev. B, V. 80, P. 214417 (1-10), (2009)