Abstract
Critical current and resistance of a single grain boundary in bulk bicrystals of the oxide superconductor BaPb1−x Bi x 03 show a reentrant behavior in the temperature region below critical temperature of single crystal blocks. We established that the reentrant behavior is related to intrinsic properties of a barrier of single grain boundary Josephson junctions in the bicrystals. Origin and structure of the tunneling barrier in the bicrystals under study are discussed.
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Roshchin, I., Stepankin, V. & Kuznetsov, A. Reentrant superconducting transport behavior of single grain boundary Josephson junction in BaPb1−xBixO3 Bicrystals. J Low Temp Phys 100, 229–240 (1995). https://doi.org/10.1007/BF00751508
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DOI: https://doi.org/10.1007/BF00751508