Generation of ultrasonic waves by ac magnetic fields in the mixed state of high-{ital T}{sub {ital c}} superconductors
Journal Article
·
· Physical Review, B: Condensed Matter
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
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.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 54969
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 51, Issue 21; Other Information: PBD: 1 Jun 1995
- Country of Publication:
- United States
- Language:
- English
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