Journal of Experimental and Theoretical Physics

, Volume 88, Issue 2, pp 398–405 | Cite as

Generalized Ginzburg-Landau equation and the properties of superconductors with Ginzburg-Landau parameter κ close to 1

  • Yu. N. Ovchinnikov


An expression is derived for the free energy of a superconductor near the critical temperature, taking account of the terms of next highest order in the parameter 1−T/Tc. These terms become important for Ginzburg-Landau parameter values |κ−1|≪1, and in this case, in an external magnetic field H0 close to Hc2, the structure of the order parameter is determined by the relative values of the three small parameters |κ−1|, 1−T/Tc, and (Hc2H0)/Hc2. Three types of lattices are investigated: triangular with one and two flux quanta per cell and square with one flux quantum per cell.


Spectroscopy Magnetic Field Free Energy State Physics Field Theory 
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Copyright information

© American Institute of Physics 1999

Authors and Affiliations

  • Yu. N. Ovchinnikov
    • 1
  1. 1.L. D. Landau Institute of Theoretical PhysicsRussian Academy of SciencesMoscowRussia

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