Tunneling study of epitaxial YBa sub 2 Cu sub 3 O sub x superconducting films

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5876292

Boguslavsky, Y M; Rudenko, E M; Mukhortov, V M ^[1]

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1. Inst. of Metal Physics, Ukrainian Academy of Sciences, 36 Vernadsky str. 252142, Kiev-142 (SU)

This paper presents planar and edge-type tunnel junctions YBa{sub 2}Cu{sub 3}O{sub x}-metal (Pb,Pt,In) based on epitaxial Y-Ba-Cu-O films. Features of conductance characteristics of these junctions, mainly conductance zero bias anomalies, have been considered. We have observed the difference between the R{sub d}(V) dependences for two types of the contacts at low bias voltages V {approx lt}5 mV. This difference probably linked with an anisotropy of the states density N ({epsilon}) in near-contact region of YBa{sub 2}Cu{sub 3}O{sub x}. Existence of the correlation in the temperature dependences of the states density of YBa{sub 2}Cu{sub 3}O{sub x} along the Cu-O planes and perpendicularly to them have been observed.

• OSTI ID: 5876292
• 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

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
ANISOTROPY
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
EPITAXY
FILMS
JUNCTIONS
OXIDES
OXYGEN COMPOUNDS
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT
YTTRIUM COMPOUNDS
YTTRIUM OXIDES