An experiment is suggested to study the symmetry of order parameter of
high temperature superconductors. The experiment is based on the reso
nant characteristics of the radio frequency superconducting interferen
ce device operating in the inductive mode. By analyzing the effects of
device parameters, the presence of multiple junctions in series and t
he residual magnetic field, the feasibility of the experiment is discu
ssed. (C) 1998 Elsevier Science Ltd. All rights reserved.