Superconductor GdBa2Cu3O7−δ edge junctions with lattice-matched Y0.6Pr0.4Ba2Cu3O7−δ barriers
Jia, Q. X. ; Wu, X. D. ; Reagor, D. W. ; Foltyn, S. R. ; Houlton, R. J. ; Tiwari, P. ; Mombourquette, C. ; Campbell, I. H. ; Garzon, F. ; Peterson, D. E.
[S.l.] : American Institute of Physics (AIP)
Published 1995
[S.l.] : American Institute of Physics (AIP)
Published 1995
| ISSN: |
1089-7550
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
High-temperature-superconductor Josephson junctions with an edge geometry of superconductor/normal-metal/superconductor have been fabricated on yttria-stabilized zirconia substrates by engineering the electrode and N-layer material to reduce the lattice mismatches (a, b, and c). With GdBa2Cu3O7−δ as electrodes and Pr-doped Y0.6Pr0.4Ba2Cu3O7−δ as a barrier, the lattice mismatches from electrode and barrier layer are reduced to a very low level. The junctions fabricated with such a design demonstrate resistively shunted junction current-voltage characteristics under dc bias at temperatures in the range of 77–88 K. The quite low specific interface resistivity on the order of 10−10 Ω cm2 indicates that the junction performance is controlled by the normal-metal (N) layer material instead of the interfaces. The use of lattice-matched electrode and N-layer material is one of the key design rules to obtain controllable high-temperature superconductor Josephson junctions. © 1995 American Institute of Physics.
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| Type of Medium: |
Electronic Resource
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| URL: |