Planar Hybrid Josephson Junctions Based on Ba-122 Single Crystals

We prepared SIS' (insulating barrier I, different superconducting electrodes S, and S') hybrid Josephson junctions on the polished surface of Ba-122 single crystals as a base electrode and used Pb as a thin-film counter electrode. We obtained I
_c
R
_N
-products up to 1.15 mV and got remarkable I
_c
R
_N
-T dependence. The influence of microwave irradiation to the junctions will be discussed.