Manifestations of a fluctuational mid-range order in superconductors with nonuniform pairing
Ismagilov A. M., Kopaev Yu. V.
Fluctuation effects in superconductors with nonuniform pairing are stronger than in the case of uniform pairing. The fluctuation component of the heat capacity is negative in a certain region of the phase diagram. A "fluctuation mechanism" is proposed for explaining the nonclassical (i.e., non-BCS behavior of the superconducting gap which has been found in tunneling and optical experiments on highTc superconductors.