Effects of Interlayer Interaction on the Superconducting State in YBCO

Details Effects of Interlayer Interaction on the Superconducting State in YBCO Effects of Interlayer Interaction on the Superconducting State in YBCO

1996-04-09

arxiv.org/abs/cond-mat/9604049v2

Phys. Rev. B 55, 1200 (1997)

Physics

Condensed Matter

Superconductivity

Small changes in response to referee and other minor changes; 10 pages + 5 figures in ReVTeX with epsf to embed figures.

Scientific paper

10.1103/PhysRevB.55.1200

For a two layer system in a weak coupling BCS formalism any interlayer interaction, regardless of its sign, enhances the critical temperature. The sign has an effect upon the relative phase of the order parameter in each of the two planes but not upon its magnitude. When one of the planes has a dispersion consistent with CuO chains and no intrinsic pairing interaction there is both an enhancement of the critical temperature and an s+d mixing in both layers as the interlayer interaction is increased. The magnetic penetration depth, c-axis Josephson tunneling, density of states and Knight shift are calculated for several sets of model parameters.

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