Penetration depth in layered high-Tc superconductors
C. Jiang, J. P. Carbotte
DOI 10.1103/PhysRevB.45.10670 · Physical Review B
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Abstract
Starting from the complete anisotropic Eliashberg equations valid for a layered compound, we compute the temperature variation of the London penetration depth λL(T) parallel and perpendicular to the planes. In our model we use a free-electron approximation in the planes with a hopping probability for interplane motion. The anisotropy in the pairing is expanded in Fermi-surface harmonics. It is found that anisotropy can strongly influence the temperature dependence of λL(T) but that its effect is suppressed with increasing coupling strength.
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