In this work the in-plane conductivity of YВaCuO and Y_1-zPr_zBa₂Cu₃O_7-x single crystals with a system of unidirectional twin boundaries was investigated. The results indicate that the partial substitution of Y by Pr results to the formation of two superconducting phases with different critical temperatures. The Pr dopants behave as efficient scattering centers of normal and fluctuating carriers. For this, a slight doping with praseodymium (till z ≈0.05) results to a significant narrowing of the temperature interval in which the pseudo-gap regime is realized in the ab-plane of YBaCuO single crystals.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/7792 must be provided.

1. Scattering processes of normal and fluctuating carriers in REBa₂Cu₃O_7-δ (RE=Y, Ho) single crystals with unidirectional twin boundaries
2. Intrinsic defect mechanisms and dopant substitution in RBa₂Cu₃O_6.5 (R=Y, Al and Ho)
3. Defect chemistry and clustering in Y_1-xPr_xBa₂Cu₃O_6.5