 
        
          
          Department of Theoretical Physics,
          B. Verkin Institute for Low Temperature Physics 
          & Engineering
          of the National Academy of Sciences of Ukraine
          47 Nauky Ave., Kharkiv, 61103, Ukraine
        
        
        
          
            
            charkina@ilt.kharkov.ua
        
        
          
            
            +38 (057) 341-08-12
        
        
        
       
      
      
        Languages:
        
          Ukrainian (native), English (A2-B1), French (A2), Luxembourgish (A1)
        
       
      
        Education:
        
          
            
              | Name of Institution | Degrees | Field | 
          
          
            
              | B.Verkin Institute for Low Temperature Physics
                and Engineering of the National Academy of Sciences of Ukraine | PhD Phys & Math (2011) | Theoretical Physics | 
        
        
          
            | B.Verkin Institute for Low Temperature Physics
              and Engineering of the National Academy of Sciences of Ukraine | Post-graduate (1995-2001) | Theoretical Physics | 
        
        
          
            | Kharkiv State University | M.Sc. (1990-1995) | Theoretical Radiophysics | 
          
        
       
      
        Field of Scientific Interest:
        
          The theory of nonlinear phenomena in condensed matter physics 
          based on the soliton concept and its applications for description 
          of nonlinear effects in crystals, magnets and metamaterials. Machine learning
        
       
      
         Main Achievements:
        
          - 
            Theoretical description of the non-stationary and internal dynamics 
            of topological solitons in nonlinear systems with the strong 
            dispersion and the processes of formation of soliton and breather 
            bound states under conditions of parametric pumping and dissipation.
          
- 
            Computer modeling of the non-stationary dynamics of soliton complexes 
            and nonequilibrium domain walls.
          
- 
            Exact theoretical description of the generation of spin waves by moving 
            domain walls in anisotropic ferro- and antiferromagnets in a magnetic field.
          
- 
            Exact solving the problem of stability of discrete magnetic 
            nanostructures and the spectral problem for their localized. 
            excitations in quasi-one-dimensional magnets.
          
- 
            Theory of local diamagnetism in nonlinear low-dimensional 
            metamaterials with breather excitations and establishment of 
            conditions for their observation.
          
- 
            Quasiclassical quantization of oscillating kinks in nonlinear 
            systems with strong dispersion.
          
 
      
        
          Professional Experience:
        
        
          
            | 2019-present: | Researcher. Department of
                Theoretical Physics, B.Verkin Institute for Low Temperature Physics
              and Engineering of the National Academy of Sciences of Ukraine (Kharkiv, Ukraine) | 
        
        
          
            | 2022-2024: | Postdoc Researcher.
              (short-term projects)
              Faculty of Science, Technology and Medicine.
                Department of Physics & Materials Science, University of Luxembourg
              (Grand Duchy of Luxembourg) | 
        
        
          
            | 2003-2018: | Junior Researcher. Department of
                Theoretical Physics, B.Verkin Institute for Low Temperature Physics
              and Engineering of the National Academy of Sciences of Ukraine (Kharkiv, Ukraine) | 
        
        
          
            | 2001-2003: | Junior Researcher.
              Department of Quantum Theory and Nonlinear Dynamics
                of Macroscopic Systems, B.Verkin Institute for Low Temperature Physics
              and Engineering of the National Academy of Sciences of Ukraine (Kharkiv, Ukraine) | 
        
        
          
            | 1995: | Engineer.
              “Hartron” Research and Production Association
              (Kharkiv, Ukraine) | 
        
       
      
        
          Educational activity:      
        
        
          
            National Technical University "Kharkiv Polytechnic
            Institute":
        
        
          "Theoretical physics" – 2015-2018;
        
        
          "Field Theory and Quantum Mechanics" – 2015-2018;
        
        
          "Quantum Mechanics" – 2017-2018
        
       
      
        Publications:
        Number of papers: 69 ( in the refereed journals - 24)
        Selected publications:
        
          - 
            M.M. Bogdan, O.V. Charkina. Quasiclassical quantization of the
            Boussinesq breather emerging from the kink localized mode.
            Low Temperature Physics. – 2025. – V.51, No 6. – P.
              763–773.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina, A.Y. Holovashchenko. 
            Vibration spectra of benzene-like models with Hooke’s law interactions.
            Low Temperature Physics. – 2023. – V.49, No 12. – P.
              1444–1457.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Structure of soliton bound states in the
            parametrically driven and damped nonlinear systems.
            Low Temperature Physics. – 2022. – V.48, No 12. – P.
              1062–1070.
            
            
          
- 
            O.V. Charkina, V.I. Belan, M.M. Bogdan. Structural transformation of spin nanoclusters
            in low-dimensional anisotropic ferromagnets under applied magnetic field.
            Low Temperature Physics. – 2021. – V.47, No 12. – P.
              1001–1010.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Nonlinear oscillations of
            topological structures in the sine-Gordon systems.
            Low Temperature Physics. – 2021. – V.47, No 6. – P.
              449–456.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Generation of wave packets
            and breathers by oscillating kinks in the sine-Gordon system.
            Low Temperature Physics. – 2021. – V.47, No 2. – P.
              155–156.
            
            
          
- 
            O.V. Charkina, M.M. Bogdan. Metastable breathers and
            local diamagnetism in two-dimensional nonlinear metamaterials. 
            Low Temperature Physics. – 2020. – V.46, No 7. – P.
              712-723.
            
            
          
- 
            M.M. Bogdan,V.I. Belan, O.V. Charkina. 
            The effect of the magnetic field on the stability and excitation spectrum of spin nanoclusters in
            anisotropic ferromagnetic chains.
            Low Temperature Physics. – 2018. – V.44, No 12. – P.
              1331-1340.
            
          
- 
            O.V. Charkina, M.M. Bogdan. Localized excitations and scattering of
            spin waves in ferromagnetic chains containing magnetic nanoclusters.
            Low Temperature Physics. – 2018. – V.44, No 7. – P.
              644-650.
            
            
          
- 
            O.V. Charkina, A.N. Kalinenko, A.I. Kopeliovich, P.V. Pyshkin,
            A.V. Yanovsky. Spin-current resonances in a magnetically inhomogeneous 2D
            conducting system. 
            Physics Letters A. – 2016. – V.380. – P. 3678-3682.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Local negative magnetic permeability and
            possibility of observation of breather excitations in magnetic
            metamaterials.
            Low Temperature Physics. – 2014. – V.40, No 3. – P.
              234–238.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Spin waves in easy-axis antiferromagnets with
            precessing domain walls. 
            Low Temperature Physics. – 2014. – V.40, No 1. – P.
              84-90.
            
          
- 
            M.M. Bogdan, O.V. Charkina. Spin waves in easy-axis antiferromagnets with
            precessing domain walls. 
            Low Temperature Physics. – 2014. – V.40, No 1. – P.
              84-90.
            
          
- 
            M.M. Bogdan, O.V. Charkina. Dynamics of bound soliton states in
            regularized dispersive equations. 
            Low Temperature Physics. – 2008. – V.34, No 7. – P.
              564–570.
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Dynamics and stability of solitons in the
            sine-Gordon models with a strong dispersion.
            Nonlinear world. – 2008. – V.6, No 5-6. – P.
              324–333. [in Russian].
            
            
          
- 
            M.M. Bogdan, O.V. Charkina. Dynamical features of bound states of
            topological solitons in highly dispersive low-dimensional
            systems. 
             Low Temperature Physics. – 2007. –V.33, No 12. – P.
              1073–1076.
            
            
          
- 
            O.V. Charkina, M.M. Bogdan. Processes of formation of soliton complexes
            and breathers in highly dispersive media.
            Uzhhorod University Scientific Herald. Series Physics. –
              2007. – Iss.21. – P. 196–204. [in Ukrainian].
            
            
          
- 
            O.V. Charkina, M.M. Bogdan. Internal Modes of Solitons and
            Near-Integrable Highly-Dispersive Nonlinear Systems.
            SIGMA (Symmetry, Integrability and Geometry: Methods and
              Applications). – 2006. – V. 2, No 047. – P. 1–12.
            
            
          
- 
            O.V. Charkina, M.M. Bogdan. Internal Modes of Oscillations of
            Topological Solitons in Highly Dispersive Media.
            Uzhhorod University Scientific Herald. Series Physics. –
              2005. – Iss.17. – P. 30-37.
            
            
          
- 
            T.N. Antsygina, O.V. Charkina, M.I. Poltavskaya. Heat Capacity of 2D Solid Solution of
            Diatomic Molecules in Rare Gas Matrix.
            Journal of Low Temperature Physics. – 2005 – V.138, No 1/2.
              – P. 379-384.
            
            
          
- 
            O.V. Charkina, K.A. Chishko. Electromagnetic Emission of Mobile
            Dislocation Segments in an Ionic Crystal.
            Physics of the Solid State. – 2001 – V.43, No 10. – P.
              1898-1904.
            
            
          
- 
            K.A. Chishko, O.V. Charkina. Radiation of electromagnetic waves from edge
            dislocations moving in ionic crystals. 
            Materials Sciences & Engineering: A. – 1997. – V.234-236. –
              P. 361-364.
            
            
          
- 
            K.A. Chishko, O.V. Charkina. Emission of electromagnetic waves by edge
            dislocations moving in ionic crystals. 
            Physics of the Solid State. – 1996. – V.38, No 9. – P.
              1521-1526.
          
- 
            N.P Zhuck, O.V. Charkina, S.N. Shul’ga. Green's functions of Maxwell's equations for
            the plane-layered Tellegen bi-isotropic medium. 
            Journal of communications technology & electronics. – 1996.
              – V.41, No 1. – P. 22–28.