Abstract
Interlayer coupling is one of the important issues in understanding transport properties in the normal and superconducting state of the cuprates. Its implications for the superconducting state, such as its role in pairing in the c-direction. are not well understood. New results are presented for longitudinal acoustic attenuation iit a layered/anisotropic superconductor. The calculation focuses on the role of anisotropy in the band structure and in the superconducting order parameter. Measurements of acoustic attenuation are useful as they can provide information on the dielectric response of the charge carriers in the low wavevector q and frequency ω regime.
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