Josephson and single-particle tunneling in superconducting bicrystals BaPb1-xBix O3
Stepankin V. N., Protasov E. A., Kuznetsov A. V., Zaitsev-Zotov S. V.
Tunneling has been observed at the barrier formed by the intergrowth surface of the superconducting bicrystals BaP^ _xBix03. It has been determined that this compound has a ratio 2Δ [Q)/kTc = 3.6 + 0.1 and that the differential-conductivity peak has a doublet structure.