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Evidence for pair-breaking in (R1−xPrx)Ba2Cu3O7−y (R=Er, Y, Dy, Gd, Eu) systems (1991)

Xu, Yunhui ; Guan, Weiyan

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 59 (1991), S. 2183-2185

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: 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/xcr〈0.6, where xcr 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.106067

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