Virgin response of field induced microwave absorption in the high T c ceramic superconductor BSCCO — RSJ model

Abstract

Field induced microwave absorption is recorded at low fields (<20mT) in a high T c ceramic superconductor (Bi,Pb)SrCaCuO, after cooling in zero field to 54,77 and 90 K at 9.9 GHz and to 77K at 36.4 GHz. The results are discussed in conjunction with the dc magnetization data obtained on the same sample. It is argued that the observed features do not follow the predictions of the flux flow model while they give qualitative evidence in support of the resistively shunted Josephson junction model.