Codoping Effect of Zn and Pr in YBa2Cu3O7-delta

Naik, MS and Sarode, PR and Prabhu, RB and Priolkar, KR and Vasanthacharya, NY (2009) Codoping Effect of Zn and Pr in YBa2Cu3O7-delta. In: Acta Physica Polonica, A, 115 (3). pp. 742-744.

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Abstract

In this paper we present the resistivity data for Pr and Zn codoped compound Y1-xPrxBa2[Cu1-yZny](3)O7-delta with 0 < y < 0.1 and x = 0.0, 0.1 and 0.2. The data is analysed in terms of the superconducting critical temperature T-c, residual resistivity rho(0) and the resistivity slope d rho/dT corresponding to the linear rho-T region. It is found that for x = 0.1 Pr has a minimal influence on the in-plane processes for Zn impurity alone affecting slightly T-c and rho(0). The slope dp/dT becomes larger for 0.03 < y < 0.06 leading to larger depining effect and hence slower fall of T, as a function of y. For x = 0.2 there is a drastic change, rho(0) becomes abnormally large, d rho/dT becomes negative implying absence of depinning and a totally pinned charge stripes. Superconductivity vanishes at y = 0.03. It is concluded that for x = 0.2 Pr converts the system from overdoped to underdoped region leading to the universal superconductor-insulator transition.

Item Type:	Journal Article
Publication:	Acta Physica Polonica, A
Publisher:	Institute of Physics, Polish Academy of Sciences
Additional Information:	Copyright of this article belongs to Institute of Physics, Polish Academy of Sciences.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	28 May 2009 10:17
Last Modified:	19 Sep 2010 05:31
URI:	http://eprints.iisc.ac.in/id/eprint/20064

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