Quasi-one-dimensional fluctuation contribution to ultrasonic attenuation in clean type-II superconductors aboveTc(B)

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Abstract
We have calculated the effect of fluctuations on the ultrasonic attenuation in a clean bulk type-II superconductor at temperatures above the transition temperature and in magnetic fields near the zero-temperature upper critical field, where the fluctuations are effectively one dimensional. The result is a decrease in the attenuation which should be observable experimentally. The effect increases with increasing mean free path.