Abstract
Theoretical and numerical results for the attenuation of high-frequency sound waves in superconductors are presented. Explicit calculations are given for the attenuation of longitudinal sound waves with wavelengths both large and small compared with the electron mean free path in pure superconductors and in superconductors containing magnetic impurities. Extensions to more general situations are discussed. The contribution due to the disruption of Cooper pairs by phonons is examined as a function of impurity concentration.
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