Sergei Kruchinin

Sergei Kruchinin (1957) - is leading scientist of the Bogolyubov Institute for Theoretical Physics, NASU (Kiev, Ukraine). Professor of NTU. Honorary Member of the Russian Academy of Creative Endeavors, Member of New York Academy of Sciences, Member of the International Association of Mathematical Physics. He has written numerous papers on theoretical physics on problem of many body systems, superconductivity, nonleniar phenomena, nanosystems. Total papers is AbOUT 70.

Important results

He explained on the nature of resonances in photonuclear reactions [1]. Together with academiciain Davydov A.S. proposed the bisoliton model of superconductivity and introduced the interlayer effects in the newest high-T superconductors [2]. Constructed the continual theory of spin-fluctuations model. It has been shown that the temperature dependence of the specific heat of the spin-fluctuations mechanism in cuprate superconductors proportional to square the temperature [3]. He explained with professor H.Nagao the two-gap superconductivity in MgB2 and developed the multiband superconductivity [4,5]. Together with Professor J.Annett considered the theory of interactions between two nanoscale ferromagnetic particles embedded within a superconductors and showed that a phase transition between transitions between spin orientations can occur as temperature is varied [6]. He constructed with professor Bogolubov N.N.Jr the theory of Gaussian quantum dots placed in magnetic field [7].

Thesis

Ph.D “The interaction of collective and internal modes in systems with a small number of nucleons” May, 1986.

Dr. Science "Thermodynamics effects in high-Tc superconductors”, 2002.

Important references

  1. Fillipov G.F., Vasilevsky V.S., and Kruchinin S.P. On the nature of resonances in photonuclear reactions. S.J. Nuc. Phys. 43, p. 843-853 (1986).
  2. Davydov A.S., Kruchinin S.P. Interlayer effects in the newest high-T superconductors. Physica C 179, p. 461-468 (1991).
  3. Kruchinin S.P. Functional integral of antiferromagnetic spin fluctuations in high-temperature superconductors. Modern Phys. Letters B. 9, p. 205-215 (1995).
  4. Nagao H., Kruchinin S.P., Yaremko A., Multiband superconductivity. Int. J. Mod. Phys. B 16, p. 3419-3428 (2002).
  5. Kruchinin S.P., Nagao H. Two-gap superconductivity in MgB2. Physics of Particles and Nuclei. 36, suppl.1, p. 127-130 (2005).
  6. Kruchinin S., Dzezherya Yu., Annett J. Imteractions of nanoscale ferromagnetic granules in a London superconductors. Supercond. Sci. Technol. 19, p.381-384(2006).
  7. Soldatov A.V., Bogolyubov N.N. Jr., Kruchinin S.P. Method of intermediate problems in the theory of Gaussian quantum dots placed in a magnetic field. Condesed Matter Physics 9, n.1, p. 1-9 (2006).

Books

  • Kruchinin S., Nagao H., Aono S. Modern aspect of superconductivity. World Scientific ,2009,ISBN-9814261602, p.220.
  • Symmetry and Pairing in Superconductors, Edited by M. Ausloos and S. Kruchinin. Proceedings of a NATO ARW, Kluwer, Dordrecht, 1999, 410 p., ISBN-N 0-79235520-2.
  • New trends in superconductivity, J.Annett and S. Kruchinin, Proceedings of a NATO ARW ,Kluwer, Dordrecht, 2002, 435 p., ISBN-N 1 4020 0704-3.
  • Modern problems of superconductivity (MPS-2002), Edited by S. Kruchinin, Proceedings of Yalta conference, Mod.Phys.Lett. B, Vol. 17, Nos. 10-12, p.393-724 (2003).
  • Electron correlation in new materials and nanosystems. Edited by K. Scharnberg and S. Kruchinin, Proceedings of a NATO ARW, Springer, p.420, ISBN-N 10 1-4020 5658-3 (2006).
  • Electron transport in nanosystems. Edited by J.Bonca and S. Kruchinin, Proceedings of a NATO Advanced Research Workshop, Springer, p.420 (2008).

Conferences

He organized the 5 workshops in Yalta on problems superconductivity and nanotechnology.

Homepage: http://www.i.com.ua/~skruchin/