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Proceedings Paper

Parallel and perpendicular field investigations of coupled high-Tc multilayer structures
Author(s): Patrice Fivat; Jean-Marc Triscone; M. Andersson; Michel Decroux; Oystein Fischer
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Paper Abstract

We report on the behavior of high Tc superconductors coupled multilayer structures in magnetic field parallel and perpendicular to the ab plane. These structures consist of N 24 angstroms thick DyBa2Cu3O7 layers, each separated from the next by 96 angstroms of an (formula available in paper) alloy. This alloy allows a coupling of the superconducting layers as demonstrated by measurements of the activation energies for flux motion U. For a N equals 15 sample one finds, in perpendicular fields, that a correlated motion of pancake vortices occurs with a characteristic length of about 480 angstroms. Additionally, U is found to be proportional to logB at low fields while at higher fields a power law behavior is observed. In parallel field we find U to be field independent up to 1 T, suggesting that the vortices are trapped at low fields in the material where weak superconductivity is induced by proximity effect.

Paper Details

Date Published: 29 June 1994
PDF: 7 pages
Proc. SPIE 2157, Superconducting Superlattices and Multilayers, (29 June 1994); doi: 10.1117/12.179158
Show Author Affiliations
Patrice Fivat, Univ. de Geneve (Switzerland)
Jean-Marc Triscone, Univ. de Geneve (Switzerland)
M. Andersson, Univ. de Geneve (Switzerland)
Michel Decroux, Univ. de Geneve (Switzerland)
Oystein Fischer, Univ. de Geneve (Switzerland)

Published in SPIE Proceedings Vol. 2157:
Superconducting Superlattices and Multilayers
Ivan Bozovic, Editor(s)

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