Alkali metal doping effect in conducting polymer- C60 composites: low-field microwave absorption and susceptibility study

摘要

Superconducting phases in composites of C_(60)with various types of conducting polymer (CP) doped by alkalimetals are studied by LFMA and susceptibility mesurements.LFMA signal drastically changes due to the metallization of CPwith increasing alkali metal doping level. At large C_(60) content,Paramagnetic Meissner Effect is confirmedd in field cooling curve.The existence of intergranular and intragranular junctions issupported from the results os AC susceptibility measurements.