Nonequilibrium mesoscopic superconductors in a fluctuational regime

Details Nonequilibrium mesoscopic superconductors in a fluctuational regime Nonequilibrium mesoscopic superconductors in a fluctuational regime

2008-12-12

arxiv.org/abs/0812.2372v3

Euro. Phys. Lett. 88, 47001 (2009)

Physics

Condensed Matter

Superconductivity

5 pages, 1 figure

Scientific paper

10.1209/0295-5075/88/47001

We show that there exist a class of nonequilibrium systems for which a non-equilibrium analog of the Ginzburg-Landau (GL) functional can be constructed and propose the procedure for its derivation. As an example, we consider a small superconductor island of the size less than the coherence length in a stationary nonequlibrium state. We find the GL expansion of the free energy functional of such a system and analyze the dependence of the coefficients of the expansion upon the external drive and the non-equilibrium distribution functions.

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