D. Fay

Theory of coherence lengths, fluctuation conductivity, and fluctuation specific heat in high-Tc oxide superconductors

Abstract The fluctuation conductivity and specific heat are derived from the Aslamazov-Larkin theory by taking into account the quasi two-dimensionality of the effective tight-binding band. The resulting coherence lengths in the basal plane are calculated explicitly for the Hubbard models of Emery and Mattis and Mattis. They turn out to depend sensitively on band width, band filling, impurity scattering rate, and pair state ( s -wave, d -wave, and uniaxial s - d -wave). Small band dispersion along the c -axis yields 2D to 3D crossover as T → T c . Our theory is capable of accounting for the small coherence lengths derived from measurements of H c 2 , the fluctuation conductivity, and the specific heat in YBa 2 Cu 3 O 7 . We suggest measurements of the fluctuation conductivity at microwave or infrared frequencies.

Thermal conductivity near H c 2 for spin-triplet superconducting states with line nodes in Sr 2 RuO 4

We calculate the thermal conductivity

Specific heat and thermal conductivity in the vortex state of the two-gap superconductor MgB 2

\ensuremath{\kappa}

Spin fluctuation exchange: Mechanism for a superfluid transition in liquid 3He

in magnetic fields near

Spin-fluctuation theory of strong coupling corrections to the free energy in superfluid 3He

{H}_{c2}

Thermal conductivity in the vortex state of the superconductor U Pd 2 Al 3

for spin-triplet superconducting states with line nodes vertical and horizontal relative to the

NMR and NQR fluctuation effects in layered superconductors

{\mathrm{RuO}}_{2}

Vertex corrections in nearly ferroelectric superconductors

planes. The method for calculating the Greens functions takes into account the spatial variation of the order parameter and superconducting flow for the Abrikosov vortex lattice. For in-plane magnetic field we obtain variations of the in-plane

Theory of fluctuation conductivity, fluctuation specific heat, and slope of Hc2 in high-Tc superconductors

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Phonon mediated interaction for triplet pairing in Pd

with twofold symmetry as a function of rotation angle where the minima and maxima occur for field directions parallel and perpendicular to the heat flow. The amplitude of the variation decreases with increasing impurity scattering and temperature. At higher temperatures the minima and maxima of the variation are interchanged. Since the results for vertical and horizontal line nodes are almost the same we cannot say which of the two pairing models is more compatible with recent measurements of