M. Palumbo et Mj. Graf, ELECTROMAGNETIC ABSORPTION IN AN ANISOTROPIC LAYERED SUPERCONDUCTOR, Physical review. B, Condensed matter, 53(5), 1996, pp. 2261-2264
We calculate the infrared conductivity tensor of a layered superconduc
tor considering two different order parameter symmetries: strongly ani
sotropic s wave with line nodes, and pure (d(x2-y2)) d wave. The calcu
lations are performed within the quasiclassical theory of superconduct
ivity and include the effects of nonmagnetic scattering processes. We
discuss to what extent measurements of the electromagnetic absorption
can be relied upon to distinguish between these two order parameter sy
mmetries.