H. Haneda et al., MUTUAL CONVERSION BETWEEN ELECTROMAGNETIC AND ULTRASONIC-WAVES IN HIGH-T-C SUPERCONDUCTORS UNDER MAGNETIC-FIELD, Physica. B, Condensed matter, 220, 1996, pp. 778-780
An RF magnetic field applied parallel to the external DC magnetic fiel
d in the superconducting YBa2Cu3O7 generates a longitudinal ultrasonic
wave. Conversely, the longitudinal ultrasonic wave induces the RF fie
ld, The conversion at the lower-temperature region is explained in ter
ms of the vibration of pinned vortices in the linear regime.