The high-Tc superconductor Bi2Sr2CaCu2Ox as a superconducting superlattice

Jin Xiang Liu, S. W. Pierson, G. C. Spalding, Ji Chun Wan, Allen M Goldman

Research output: Contribution to journalLetterpeer-review

6 Scopus citations


Structures in the conductance which are periodic in bias voltage have been observed in very weakly coupled Bi2Sr2CaCu2Ox/W point-contact tunneling junctions. These reproducible features appear to result from geometrical resonances of the order parameter, as would be found in superconductor-normal multilayers, rather than from Coulomb-staircase or multiple-gap effects. The data and its analysis strongly suggest the validity of treating even microscopic properties of Bi2Sr2CaCu2Ox using multilayer models with geometrical parameters inferred from the placement and thicknesses of the CuO2 conductive sheets within the unit cell.

Original languageEnglish (US)
Pages (from-to)721-726
Number of pages6
Issue number8
StatePublished - Dec 15 1992


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