Superconducting transitions from the pseudogap state: d-wave symmetry, lattice, and low-dimensional effects

Details Superconducting transitions from the pseudogap state: d-wave symmetry, lattice, and low-dimensional effects Superconducting transitions from the pseudogap state: d-wave symmetry, lattice, and low-dimensional effects

1998-05-04

arxiv.org/abs/cond-mat/9805032v2

Phys. Rev. B 59, 7083-7093 (1999)

Physics

Condensed Matter

Superconductivity

REVTeX, 11 pages, 6 EPS figures included, Replace with published version

Scientific paper

10.1103/PhysRevB.59.7083

We investigate the behavior of the superconducting transition temperature within a previously developed BCS-Bose Einstein crossover picture. This picture, based on a decoupling scheme of Kadanoff and Martin, further extended by Patton, can be used to derive a simple form for the superconducting transition temperature in the presence of a pseudogap. We extend previous work which addressed the case of s-wave pairing in jellium, to explore the solutions for T_c as a function of variable coupling in more physically relevant situations. We thereby ascertain the effects of reduced dimensionality, periodic lattices and a d-wave pairing interaction. Implications for the cuprate superconductors are discussed.

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