Generation of ultrasonic waves by ac magnetic fields in the mixed state of high-Tc superconductors

D. Domínguez; L. Bulaevskii; B. Ivlev; M. Maley; A. R. Bishop

doi:10.1103/PhysRevB.51.15649

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Generation of ultrasonic waves by ac magnetic fields in the mixed state of high-Tc superconductors

D. Domínguez, L. Bulaevskii, B. Ivlev, M. Maley, A. R. Bishop

DOI 10.1103/PhysRevB.51.15649 · Physical Review B

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Abstract

We discuss the interaction of a vortex array in a superconductor with sound oscillations, taking into account pinning forces between vortices and crystal displacements. The generation of ultrasound by an ac electromagnetic field acting on the vortex array is considered. We find that at low temperatures and in the linear regime the amplitude of the induced sound wave is proportional to the applied dc magnetic field and independent of pinning strength. We show how the subsequent multiple echo amplitudes allow one to obtain information on the Magnus force and viscosity of the vortex array.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown