Ultrasonic attenuation by the vortex lattice of high-Tc superconductors

J. Pankert; G. Marbach; A. Comberg; P. Lemmens; P. Fröning; S. Ewert

doi:10.1103/PhysRevLett.65.3052

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Ultrasonic attenuation by the vortex lattice of high-Tc superconductors

J. Pankert, G. Marbach, A. Comberg, P. Lemmens, P. Fröning, S. Ewert

DOI 10.1103/PhysRevLett.65.3052 · Physical Review Letters

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Abstract

Measurements of the transverse sound attenuation and velocity in a ceramic Bi1.6Pb0.4Sr2Ca2Cu3Oy superconductor (Tc=110 K) were performed with and without a magnetic field. Pronounced peaks in the field-induced attenuation and an increase of the velocity at low temperatures were observed. These effects can be attributed to the transition of a rigidly pinned flux-line lattice into a depinned state. A quantitative explanation is presented within the framework of thermally assisted flux flow and without any adjustable parameter.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi1.6Pb0.4Sr2Ca2Cu3Oy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	110	Pressure not reported	unknown