Evidence for pair-breaking in (R1−xPrx)Ba2Cu3O7−y (R=Er, Y, Dy, Gd, Eu) systems
- 21 October 1991
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 59 (17) , 2183-2185
- https://doi.org/10.1063/1.106067
Abstract
We observed that the superconducting critical temperature Tc(x) of the oxides (R1−xPrx)Ba2Cu3O7−y (R=Er, Y, Dy, Gd, Eu) decreases monotonically with increasing Pr concentration x. Using the reduced parameters Tc/Tc(0) and x/xcr all the experimental data for five studied systems fall onto the theoretical universal curve of Abrikosov and Gor’kov over the reduced Pr concentration regime, x/xcrxcr is the critical concentration of Pr for the complete suppression of superconductivity and Tc(0) is the Tc for undoped material. The consistency of these results suggests a pair‐breaking mechanism which plays a role in depressing superconductivity in these high Tc oxides.Keywords
This publication has 19 references indexed in Scilit:
- Evidence against hole filling by Pr inPhysical Review B, 1990
- On narrowing of the resistive superconducting transition in applied magnetic fields and positive curvature in Hc2(T) in the (Gd1−xPrx)Ba2Cu3O7−δ systemPhysica C: Superconductivity and its Applications, 1990
- Hole filling and pair breaking by Pr ions in YBa_{2}Cu_{3}O_{6.95±0.02}Physical Review Letters, 1989
- Upper critical field and normal-state properties of single-phase compoundsPhysical Review B, 1989
- Electronic structure of the quenched superconductivity materials Y1−xPrxBa2Cu3O7−δJournal of the Less Common Metals, 1989
- Hole concentrations, Hall number, and relationships in substitutedPhysical Review B, 1989
- On the Suppression of Superconductivity in Y
1-
x
Pr
x
Ba 2 Cu 3 O 7-δEurophysics Letters, 1988
- Superconducting and normal state properties ofSolid State Communications, 1988
- Incorporation of Pr in YBa2Cu3O7−δ: electronic effects on superconductivityNature, 1987
- The superconductive properties and crystal structure of Ba2(Y1?x Pr x )Cu3O9?y solid solutionsZeitschrift für Physik B Condensed Matter, 1987