Superconducting artificial multilayers based on (Ba,Ca)/CuO2 grown by pulsed laser ablation

Valeria Braccini; Daniele Marre; Giuseppe Grassano; Antonio Sergio Siri

doi:10.1117/12.397859

6 September 2000 Superconducting artificial multilayers based on (Ba,Ca)/CuO₂ grown by pulsed laser ablation

Valeria Braccini, Daniele Marre, Giuseppe Grassano, Antonio Sergio Siri

Proceedings Volume 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV; (2000) https://doi.org/10.1117/12.397859
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

Superconducting multilayers, whose growth and structure are determined by the kinetic deposition and not by thermodynamics, are a powerful tool for investigating High T_c 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.

Citation Download Citation

Valeria Braccini, Daniele Marre, Giuseppe Grassano, and Antonio Sergio Siri "Superconducting artificial multilayers based on (Ba,Ca)/CuO₂ grown by pulsed laser ablation", Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); https://doi.org/10.1117/12.397859

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