This article is cited in 5 papers

Superconductivity

Interfaces in superconducting hybrid heterostructures with an antiferromagnetic interlayer

K. I. Constantinian^a, Yu. V. Kislinskii^a, G. A. Ovsyannikov^ab, A. V. Shadrin^ab, A. E. Sheierman^a, A. L. Vasil'ev^c, M. Yu. Presniakov^c, Ph. V. Komissinskii<sup>ad

a</sup> Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences, Moscow
^b Chalmers University of Technology, Sweden
^c National Research Centre "Kurchatov Institute", Moscow
^d Technische Universität Darmstadt, Germany

Abstract: The structural, X-ray diffraction, and electrophysical studies of hybrid superconducting hetero-structures with an interlayer of cuprate antiferromagnetic Ca$_{1-x}$Sr$_x$CuO$_2$ (CSCO) with the upper electrode Nb/Au and the lower electrode YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO) have been carried out. It has been experimentally shown that the epitaxial growth of two cuprates, YBCO and CSCO, results in the formation of an interface on which the enrichment of the CSCO interlayer with charge carriers proceeds to a depth of about 20 nm. In this case, the conduction of the enriched CSCO region proves to be closer to metallic, whereas the CSCO film deposited onto the NdGaO$_3$ substrate is a Mott insulator with hopping conduction.

Received: 29.08.2012

 English version: Physics of the Solid State, 2013, 55:3, 461–465

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