Abstract:
We study the ultrasonic attenuation in layered superconductors using the Green's function
formalism. General expressions are derived analytically and then calculated numerically
by taking the nearest and next-nearest interactions in a disordered layered superconductor
with random hoppings. Our results show huge anisotropics of ultrasonic attenuation in the
superconductors and the strong dependence of ultrasonic attenuation on the temperature
and the direction of polarization of the sound wave.
