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Josephson junction in superconducting oxides thick films. Jonction Josephson en couche epaisse d'oxydes supraconducteurs

Conference:

Abstract

Constrictions engraved in YBaCuO thick films fabricated by screen printing on YSZ substrate (J{sub c} > 3 000 A/cm{sup 2} at 77 K) have been studied. Microwave irradiation of the devices at LN{sub 2} showed distinct Shapiro steps demonstrating the presence intrinsic Josephson junctions. The latter have an I{sub c}(T) dependence fitting (1 - T/T{sub c}){sup 2} characteristic of SNS junctions. Furthermore, dc SQUID effects have also been observed with a peak-to-peak response {approx equal} 0.2 {mu}V and with a magnetic field periodicity extending through several hundred of {phi}{sub o}. An energy resolution close to 3 x 10{sup -29} J/Hz is estimated for our constriction operating in the white noise frequency range (f > 50 Hz) at 77 K. This sensitivity is adequate to use this flux sensor in many applications: geomagnetism, magnetocardiology,... 19 refs; 7 figs.
Authors:
Gunther, C; Monfort, Y; Lam Chok Sing, M; Bloyet, D; Brousse, T; Provost, J; Raveau, B [1] 
  1. Institut des Sciences de la Matiere du Rayonnement, 14 - Caen (FR)
Publication Date:
Feb 01, 1992
Product Type:
Conference
Report Number:
CONF-9011234-
Reference Number:
FRD-92-001673; EDB-92-109139
Resource Relation:
Journal Name: Journal de Physique. 3, Physique Appliquee, Sciences des Materiaux, Fluides, Plasmas, Instrumentation; (France); Journal Volume: 2:2; Conference: 2. national meeting of studies on high critical temperature superconducting ceramics, 2. Journees d'Etudes: Ceramiques Supraconductrices a Haute Temperature critique, Caen (France), 6-7 Nov 1990
Subject:
36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; JOSEPHSON JUNCTIONS; BARIUM OXIDES; COPPER OXIDES; CRITICAL CURRENT; IRRADIATION; SHORT WAVE RADIATION; SQUID DEVICES; SUPERCONDUCTIVITY; YTTRIUM OXIDES; ZIRCON; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CURRENTS; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; FLUXMETERS; JUNCTIONS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATIONS; RADIOWAVE RADIATION; SILICATE MINERALS; SUPERCONDUCTING DEVICES; SUPERCONDUCTING JUNCTIONS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; 360207* - Ceramics, Cermets, & Refractories- Superconducting Properties- (1992-)
OSTI ID:
5265731
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Journal ID: ISSN 1155-4320; CODEN: JPAIE
Submitting Site:
FRN
Size:
Pages: 255-262
Announcement Date:

Conference:

Citation Formats

Gunther, C, Monfort, Y, Lam Chok Sing, M, Bloyet, D, Brousse, T, Provost, J, and Raveau, B. Josephson junction in superconducting oxides thick films. Jonction Josephson en couche epaisse d'oxydes supraconducteurs. France: N. p., 1992. Web.
Gunther, C, Monfort, Y, Lam Chok Sing, M, Bloyet, D, Brousse, T, Provost, J, & Raveau, B. Josephson junction in superconducting oxides thick films. Jonction Josephson en couche epaisse d'oxydes supraconducteurs. France.
Gunther, C, Monfort, Y, Lam Chok Sing, M, Bloyet, D, Brousse, T, Provost, J, and Raveau, B. 1992. "Josephson junction in superconducting oxides thick films. Jonction Josephson en couche epaisse d'oxydes supraconducteurs." France.
@misc{etde_5265731,
title = {Josephson junction in superconducting oxides thick films. Jonction Josephson en couche epaisse d'oxydes supraconducteurs}
author = {Gunther, C, Monfort, Y, Lam Chok Sing, M, Bloyet, D, Brousse, T, Provost, J, and Raveau, B}
abstractNote = {Constrictions engraved in YBaCuO thick films fabricated by screen printing on YSZ substrate (J{sub c} > 3 000 A/cm{sup 2} at 77 K) have been studied. Microwave irradiation of the devices at LN{sub 2} showed distinct Shapiro steps demonstrating the presence intrinsic Josephson junctions. The latter have an I{sub c}(T) dependence fitting (1 - T/T{sub c}){sup 2} characteristic of SNS junctions. Furthermore, dc SQUID effects have also been observed with a peak-to-peak response {approx equal} 0.2 {mu}V and with a magnetic field periodicity extending through several hundred of {phi}{sub o}. An energy resolution close to 3 x 10{sup -29} J/Hz is estimated for our constriction operating in the white noise frequency range (f > 50 Hz) at 77 K. This sensitivity is adequate to use this flux sensor in many applications: geomagnetism, magnetocardiology,... 19 refs; 7 figs.}
journal = {Journal de Physique. 3, Physique Appliquee, Sciences des Materiaux, Fluides, Plasmas, Instrumentation; (France)}
volume = {2:2}
place = {France}
year = {1992}
month = {Feb}
}