Theory of ultrasonic attenuation in impure anisotropic p-wave superconductors

L. Coffey

doi:10.1103/PhysRevB.35.8440

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Theory of ultrasonic attenuation in impure anisotropic p-wave superconductors

L. Coffey

DOI 10.1103/PhysRevB.35.8440 · Physical Review B

T1

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Abstract

The longitudinal ultrasonic attenuation for impure anisotropic superconductors in the axial and polar phases is calculated using the deformation-potential approach. Impurity effects are treated by the self-consistent Born method. For realistic values of ql and ωτ, good agreement is obtained between theory and experiments. This is the case for the exponents describing the intermediate temperature dependence as well as the peak observed in the sound attenuation just below Tc. The behavior of the peak that is calculated in this theory is examined and discussed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
UBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown