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Fabrication and characterization of YBa sub 2 Cu sub 3 O sub 7 /Au/YBa sub 2 Cu sub 3 O sub 7 Josephson junctions

Conference · · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:5922181
; ;  [1];  [2];  [3]
  1. Westinghouse Science and Technology Center, Pittsburgh, PA (US)
  2. Cornell Univ., Ithaca, NY (United States)
  3. FEI Company, Beaverton, OR (US)
This paper reports on all-high-T{sub c} Josephson junctions in a planar S-N-S geometry, by bridging narrow gaps ({approx}0.-0.2 {mu}m) in epitaxial YBa{sub 2}Cu{sub 3}O{sub 7} (YBCO) films with Au. The resulting devices exhibit a variety of nonhysteretic I-V characteristics, with I{sub c}R{sub N} of order 0.1 to 10 mV, and exhibit Shapiro steps under microwave irradiation, and weak periodic modulation of the critical current with applied magnetic field. The transport properties of the junctions appear to be dominated by the Au/YBCO interfaces rather than by the Au itself.
OSTI ID:
5922181
Report Number(s):
CONF-900944--
Conference Information:
Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
Country of Publication:
United States
Language:
English

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