Acoustoelectric and Thermoelectric Effects in Superconductors
Gal'perin Yu. M. , Gurevich V.L., Kozub V. I.
It is shown that a phase difference of the ordering parameter is produced on the "boundaries of a superconductor through which sound propagates or in which a temperature gradient exists. This difference is proportional to the difference between the sound intensities or the temperature difference, and can Ъе measured in a superconducting interferometer.