Metal-to-insulator transition in Y1−xPrxBa2Cu3O7−δ single crystals with various praseodymium contents

► Influence of Pr doping on the basis plane conductivity of Y1−xPrxBa2Cu3O7−δ. ► Increase of the Pr content leads to the metal–insulator transition in the system. ► The metal–insulator transition always precedes the superconducting transition. ► Increase of Pr content shifts the metal–insulator tran...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2013-02, Vol.485, p.89-91
Main Authors: Vovk, R.V., Nazyrov, Z.F., Goulatis, I.L., Chroneos, A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Doping
Electronic structure
Exact sciences and technology
High Tc superconductivity
Localization effects
Metal–insulator transition
Physics
Properties of type I and type II superconductors
Superconductivity
YBaCuO single crystals
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Summary:► Influence of Pr doping on the basis plane conductivity of Y1−xPrxBa2Cu3O7−δ. ► Increase of the Pr content leads to the metal–insulator transition in the system. ► The metal–insulator transition always precedes the superconducting transition. ► Increase of Pr content shifts the metal–insulator transition point at T. We investigate the influence of praseodymium content on the basis plane conductivity of Y1−хPrхBa2Cu3O7−δ single crystals. An increase of the praseodymium concentration leads to the enhancement of the localization effects and the appearance of a metal–insulator transition in the system, which always precedes the superconducting transition. The increase of the concentration of praseodymium, leads to a significant displacement of the point of the metal–insulator transition in the low temperature region.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2012.09.017