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Fabrication of heteroepitaxial YBa sub 2 Cu sub 3 O sub 7 minus x -PrBa sub 2 Cu sub 3 O sub 7 minus x -YBa sub 2 Cu sub 3 O sub 7 minus x Josephson devices grown by laser deposition

Journal Article · · Applied Physics Letters; (USA)
DOI:https://doi.org/10.1063/1.102340· OSTI ID:5169720
; ; ; ; ;  [1]
  1. Bellcore, Red Bank, New Jersey 07701 (US)
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We have fabricated Josephson weak links from {ital in} {ital situ} laser-deposited four-layer structures of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/PrBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}/YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}}Au. These devices show superconductor/normal-metal/superconductor-like current-voltage characteristics with good areal scaling of both the critical currents {ital I}{sub {ital c}} and resistances {ital R}{sub {ital j}}, with {ital I}{sub {ital cRj}}{approx}3.5 mV. Constant-voltage current steps observed in response to 84 GHz mm-wave radiation and modulation of the dc supercurrent in a transverse magnetic field demonstrate that both the ac and dc Josephson effects occur in these devices.

OSTI ID:
5169720
Journal Information:
Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 55:19; 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
426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
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
CURRENTS
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
FABRICATION
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES