Order parameter of inhomogeneous superconductors

摘要: Abstract The configuration-averaged thermodynamic free-energy 〈f〉 of an inhomogeneous superconductor is calculated within a Gaussian approximation the Ginzburg-Landau formalism. equilibrium order parameter gy (T) shows systematic depression below predicted BCS values, whereas critical exponent β remains unchanged. These predictions are supported by recent tunneling measurements in Al—Al2O3)—Pb junctions done Gray and Schuller. small tails observed these experiments explained existing Josephson coupling between Al Pb parameters.