Ultrasonic Attenuation in Clean Anisotropic Superconductors

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28 April 1986

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 56 (17) , 1870-1873
https://doi.org/10.1103/physrevlett.56.1870

Abstract

We calculate the longitudinal ultrasonic attenuation

α

of clean anisotropic superconductors. The temperature dependence of

α

depends not only on the density of states and the sound orientation, but also on

R = \frac{T_{c}}{{2 T}_{F}}

, where

T_{c}

and

T_{F}

are the transition and Fermi temperatures. Peaks in

α (T)

can occur for certain orientations if

R \neq 0

. The asymptotic low-temperature regime is only reached for

T < < R T_{c}

.

Keywords

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