Effect of Interband Transitions on the c axis Penetration Depth of Layered Superconductors

Details Effect of Interband Transitions on the c axis Penetration Depth of Layered Superconductors Effect of Interband Transitions on the c axis Penetration Depth of Layered Superconductors

1996-12-05

arxiv.org/abs/cond-mat/9612058v1

PHYS REV B 55: (21) 14592-14599 JUN 1 1997

Physics

Condensed Matter

Superconductivity

8 pages, 5 figures

Scientific paper

10.1103/PhysRevB.55.14592

The electromagnetic response of a system with two planes per unit cell involves, in addition to the usual intraband contribution, an added interband term. These transitions affect the temperature dependence and the magnitude of the zero temperature c-axis penetration depth. When the interplane hopping is sufficiently small, the interband transitions dominate the low temperature behaviour of the penetration depth which then does not reflect the linear temperature dependence of the intraband term and in comparison becomes quite flat even for a d-wave gap. It is in this regime that the pseudogap was found in our previous normal state calculations of the c-axis conductivity, and the effects are connected.

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