An isotropic energy dissipation in high Tc ceramic: local field effects

Abstract

In a recent, communication Ji Rzchowski and Tinkham have interpreted the history dependence of the microwave surface resistance in polycrystalline. In this paper we show that the proposed model can be extended to understand the hysteretic dissipation, found in polycrystalline superconductors through I-V dc curves for the case where the magnetic field lies parallel and anti-parallel to the transport currrent.