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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
Solids

Abstract

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.

Keywords

Spectroscopy Magnetic Field Free Energy State Physics Field Theory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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