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Proceedings Paper

Superconducting artificial multilayers based on (Ba,Ca)/CuO2 grown by pulsed laser ablation
Author(s): Valeria Braccini; Daniele Marre; Giuseppe Grassano; Antonio Sergio Siri
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Paper Abstract

Superconducting multilayers, whose growth and structure are determined by the kinetic deposition and not by thermodynamics, are a powerful tool for investigating High Tc superconductors (HTSC) properties and for possible future applications. By means of Pulsed Laser Deposition (PLD), we grew such materials alternating infinite layer phases both pure and doped, to supply CuO2 planes and charge reservoir (CR) blocks respectively. We found out that using CR chemically doped with high concentrations of Ag and Sc substituted on the copper site in infinite layer compounds leads to a semiconducting behavior, whereas oxygen doping seems to be much more effective, since the BaCuO2 infinite phase, grown in high oxygen partial pressure, does actually bring about a superconducting behavior. We deposited BaCuO2/CaCuO2 superlattices with various periodicities and studied their transport and structural properties. By varying the deposition parameters, we reached both kinetic and thermodynamic growth and we observed semiconducting and superconducting behaviors.

Paper Details

Date Published: 6 September 2000
PDF: 8 pages
Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); doi: 10.1117/12.397859
Show Author Affiliations
Valeria Braccini, INFM/Univ. degli Studi di Genova (Italy)
Daniele Marre, INFM/Univ. degli Studi di Genova (Italy)
Giuseppe Grassano, INFM/Univ. degli Studi di Genova (Italy)
Antonio Sergio Siri, INFM/Univ. degli Studi di Genova (Italy)

Published in SPIE Proceedings Vol. 4058:
Superconducting and Related Oxides: Physics and Nanoengineering IV
Davor Pavuna; Ivan Bozovic, Editor(s)

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