On details of the thermodynamical derivation of the Ginsburg--Landau equations

Abstract

We examine the procedure of thermodynamical derivation of the Ginsburg--Landau equation for current, which is given unclear and contradictory interpretations in existing textbooks. We clarify all steps of this procedure and find as a consequence a limitation on the validity range of the thermodynamic Ginsburg--Landau theory, which does not seem to be explicitely stated up to now: we conclude that the thermodynamic theory is applicable only to a superconducting specimen that is not a part of an external current-carrying loop.

11 pages. Accepted for publication in 'Superconductor Science and Technology'

Cited by in corpus (3)

• A case of thermodynamic failure in the Ginzburg--Landau approach to fluctuation superconductivity
• Towards 4 formalisms description of properties of the unconventional Josephson junction and unconventional SQUIDs made by putting non-superconducting strip on the top of superconducting strip
• Use of the Modified Ginzburg-Landau Equations in High Temperature Superconductors