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COEXISTENCE OF DIFFERENT TYPES OF TRANSVERSE CONDUCTIVITY IN Y_1-xPr_xBa₂Cu₃ O_7-δ SINGLE CRYSTALS WITH DIFFERENT PRASEODYMIUM CONCENTRATIONS

R. V. VOVK

Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

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N. R. VOVK

Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

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I. L. GOULATIS

Kharkov National University, 4 Svoboda Sq., 61077 Kharkov, Ukraine

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, and

A. CHRONEOS

Department of Materials, Imperial College, London SW7 2AZ, UK

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https://doi.org/10.1142/S0217984913501984Cited by:2 (Source: Crossref)

Abstract

In this paper, the influence of praseodymium doping on the conductivity across (transverse) the basal plane of high-temperature superconducting Y_1-xPr_xBa₂Cu₃O_7-δ single crystals is investigated. It is determined that an increase of praseodymium doping leads to increased localization effects and the implementation of a metal–insulator transition Y_1-xPr_xBa₂Cu₃O_7-δ, which always precedes the superconducting transition. The increase of the praseodymium concentration also leads to a significant displacement of the point of the metal–insulator transition to the low temperature region.

Keywords:

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