DERIVATION OF EXPRESSION FOR THERMODYNAMIC POTENTIAL OF “DIRTY” SUPERCONDUCTOR

A. V. Semenov¹, I. A. Devyatov², A. A. Korneev¹, K. V. Smirnov¹, G. N. Goltsman¹, A. P. Melnikov<sup>1

1</sup>Moscow State Pedagogical University

²Skobelitsyn Institute of Nuclear Physics, Moscow State University

 

Received April 16, 2012

 

Abstract. We derive a formula for thermodynamic potential of dirty superconductor which express it via isotropic quasiclassical Green functions of Usadel theory. Our result allows unify description of dynamic processes and fluctuations in superconducting nano-electronic devices.

Keywords: superconducting nano-electronics, Usadel theory, thermodynamic potential.