Ultrasonic attenuation of a superconductor with a spiral spin-density wave

M. E. Simón; A. A. Aligia

doi:10.1103/PhysRevB.45.12959

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Ultrasonic attenuation of a superconductor with a spiral spin-density wave

M. E. Simón, A. A. Aligia

DOI 10.1103/PhysRevB.45.12959 · Physical Review B

T1

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Abstract

We have calculated the longitudinal ultrasonic attenuation of a simple clean superconducting metal with a spiral spin-density wave (SSDW). The superconducting gap Δ(k) vanishes along a circle on the Fermi surface. The ultrasonic attenuation coefficient αq for wave vector q parallel to the SSDW axis is not directly related to the superconducting density of states, its temperature dependence cannot be fitted by a power law and depends on the ratio between Fermi and sound velocities. For q perpendicular to the SSDW axis, αq(T) is linear in T for low enough temperature T, as for the polar phase of p-wave superconductors.

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
(U,Th)Be13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown