Abstract
By using a functional integral formulation of the theory of superconductivity, we derive a generalization of the Ginsburg-Landau free energy functional valid at all temperatures. It reduces to it near the critical temperature. By minimization of this new functional we get the usual Bogolubov self-consistent equations for superconductors.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
N. R. Werthamer,Superconductivity (Marcel Dekker, Inc., New York, 1969).
J. Hubbard,Phys. Rev. Letters 3, 77 (1959).
R. P. Feynman,Phys. Rev. 84, 108 (1951).
This formalism has been used by: J. Langer,Phys. Rev. 134, A553 (1964); B. Muhlschlegel,J. Math. Phys. 3, 522 (1962); T. M. Rice,J. Math. Phys. 8, 1581 (1967).
P. G. de Gennes,Superconductivity of Metals and Alloys (W. A. Benjamin, Inc., New York, 1966).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cyrot, M. Free energy functional and Bogolubov equations. J Low Temp Phys 2, 195–198 (1970). https://doi.org/10.1007/BF00628176
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00628176