Tunneling in Pb-YBCO junctions: Determining the symmetry of the pairing state
AuthorWollman, D. A.
Harlingen, D. J. Van
Ginsberg, D. M.
SourceJournal of Physics and Chemistry of Solids
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We report on our efforts to understand the origin of supercurrent observed in c-axis tunnel junctions on YBCO [Sun A. G. et al., Phys. Rev. Lett. 72, 2267 (1994).] by studying the phase coherence of a-axis/c-axis and b-axis/c-axis Pb-YBCO SQUIDs and Josephson junctions. We also discuss the quasiparticle tunneling spectra measured in c-axis Pb-YBCO junctions which should give information about the pairing mechanism responsible for high temperature superconductivity. © 1995.