Bi2Sr2CaCu2O8+δ intrinsic Josephson junctions: Surface layer characterization and control
S. P. Zhao, X. B. Zhu, Y. F. Wei, G. H. Chen, Q. S. Yang, C. T. Lin
DOI 10.1103/PhysRevB.72.184511 · Physical Review B
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Abstract
Intrinsic Josephson junctions on Bi2Sr2CaCu2O8+δ superconductors are fabricated using an in situ low-temperature cleavage technique, which allows for the fabrication of well-controlled surface CuO2 double layers of different doping levels. The low-voltage I−V characteristics and c-axis conductivity properties are discussed for both the surface junctions (D−I−D′ type) and inner junctions (D−I−D type) where D denotes a d-wave superconductor. Our results show that the experimental data can be satisfactorily described in terms of the theory taking account of the coherent process with a directional tunneling matrix element.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.5 | Pressure not reported | midpoint |
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