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Proceedings Paper

[BaCu02)m./[[Ca,Sr]CuO2]n superlattices grown by pulsed laser deposition: structural and electrical transport properties
Author(s): Giusepe Balestrino; A. Crisan; Sergio Martellucci; P. G. Medaglia; A. Paoletti; G. Petrocelli
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Paper Abstract

In this paper we show that (BaCuO2)m/((Ca,Sr)CuO2)n superlattices with good crystallographic quality can be engineered by Pulsed Laser Deposition in a wide range of composition, namely for m equals 2 and n ranging form 1 to 6. The temperature dependence of resistivity of the superlattices grown at relatively high oxygen pressure and temperatures above 570 degrees C is metallic with a full transition to a superconductive state. For optimized growth conditions, the critical temperature can reach a value of about 80 K. We investigated some of the electrical transport properties of these superlattices. The result of these measurements indicate, for these artificial structures, an intermediate degree of anisotropy between the highly anisotropic BSCCO and the relatively isotropic YBCO. Moreover, the dependence of Tc on the number of CaCuO2 layers was investigated and a maximum was found for n equals 2-3.

Paper Details

Date Published: 9 December 1998
PDF: 7 pages
Proc. SPIE 3480, Superconducting Superlattices II: Native and Artificial, (9 December 1998); doi: 10.1117/12.332457
Show Author Affiliations
Giusepe Balestrino, Univ. degli Studi di Roma Tor Vergata (Italy)
A. Crisan, Univ. degli Studi di Roma Tor Vergata (Italy)
Sergio Martellucci, Univ. degli Studi di Roma Tor Vergata (Italy)
P. G. Medaglia, Univ. degli Studi di Roma Tor Vergata (Italy)
A. Paoletti, Univ. degli Studi di Roma Tor Vergata (Italy)
G. Petrocelli, Univ. degli Studi di Roma Tor Vergata (Italy)


Published in SPIE Proceedings Vol. 3480:
Superconducting Superlattices II: Native and Artificial
Ivan Bozovic; Davor Pavuna, Editor(s)

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