YBCO/Pb tunnel junctions; Reproducibility, cyclability and role of the oxygen content at the YBCO surface
Conference
·
· IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:5901379
- Dept. di Fisica, Univ. di Salerno, 84081 Baronissi (IT)
- AT and T Bell Labs., Murray Hill, NJ (United States)
This paper reports on planar tunnel junctions on liquid etched YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) single crystals with a native barrier and a Pb film as counterelectrode. Reproducibility of the tunelling characteristics has been tested on more than 150 junctions. Cyclability was good for 6 thermal cycles over the course of 6 months. The main features on the dV/dI vs V curves were gap-like structures at {plus minus}4-5 mV and {plus minus}19 mV and well defined minima at {plus minus}36 mV. The amplitudes of these structures show little change when the YBCO single crystals were exposed 24 hours to room atmosphere prior to the Pb evaporation.
- OSTI ID:
- 5901379
- Report Number(s):
- CONF-900944--
- Journal Information:
- IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELEMENTS
ENERGY GAP
FILMS
HEATING
JUNCTIONS
LEAD
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHONONS
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
ELEMENTS
ENERGY GAP
FILMS
HEATING
JUNCTIONS
LEAD
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHONONS
QUASI PARTICLES
SUPERCONDUCTING JUNCTIONS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES