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Superconducting characteristics of a planar-type HoBa sub 2 Cu sub 3 O sub 7 sub minus x minus La sub 1. 5 Ba sub 1. 5 Cu sub 3 O sub 7 sub minus y minus HoBa sub 2 Cu sub 3 O sub 7 sub minus x junction

Journal Article · · Applied Physics Letters; (USA)
DOI:https://doi.org/10.1063/1.104790· OSTI ID:5638608
; ; ; ; ;  [1]
  1. Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185, Japan (JP)
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A planar-type junction of HoBa{sub 2}Cu{sub 3}O{sub 7{minus}}{sub {ital x}} {minus} La{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 7{minus}{ital y}} {minus} HoBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} having an electrode spacing as small as 0.1 {mu}m is fabricated and its electrical characteristics are measured. Supercurrent through the La{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 7{minus}{ital y}} layer is detected up to the temperature of 69 K. A superconducting region extends from the YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} electrodes into a normal La{sub 1.5}Ba{sub 1.5}Cu{sub 3}O{sub 7{minus}{ital y}} layer with a submicrometer scale. The superconducting decay length is 65 nm, which is two orders of magnitude larger than the value calculated from the conventional proximity theory.

OSTI ID:
5638608
Journal Information:
Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 58:23; ISSN APPLA; ISSN 0003-6951
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRODES
FABRICATION
HOLMIUM COMPOUNDS
HOLMIUM OXIDES
JUNCTIONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PROXIMITY EFFECT
RARE EARTH COMPOUNDS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS