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Pair breaking by chain oxygen disorder in light-ion irradiated YBa_(2)Cu_(3)O_(x) thin films



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Arias Serna, Diego and Sefrioui, Zouhair and Loos, G. and Agulló-Rueda, F. and García Barriocanal, Javier and León Yebra, Carlos and Santamaría Sánchez-Barriga, Jacobo (2003) Pair breaking by chain oxygen disorder in light-ion irradiated YBa_(2)Cu_(3)O_(x) thin films. Physical review B, 68 (9). ISSN 1098-0121


Official URL: http://dx.doi.org/10.1103/PhysRevB.68.094515



We report on the effect of oxygen disorder in the CuO chains on the superconducting properties of oxygen depleted YBa_(2)Cu_(3)O_(x)(YBCO). While moderate disorder, induced thermally, depresses the critical temperature as a result of a reduced carrier concentration, strong oxygen disorder and chain fragmentation induced by low energy (80 keV) He^(+) irradiation suppresses the critical temperature beyond the values expected from the reduction of the carrier density. This provides an experimental evidence of pair breaking by chain disorder and outlines the importance of chain states in the pairing mechanism in the YBCO family.

Item Type:Article
Additional Information:

© 2003 The American Physical Society. We thank M. A. Alario for fruitful conversations. Financial support by Spanish CICYT Grant No. MAT 2000-1468 is also acknowledged.

Uncontrolled Keywords:T-C superconductors; Single-crystal; Insulator-transition; Normal-state; Resistivity; Anisotropy; Temperature; Plane; Hall; Suppression.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:30741
Deposited On:10 Jun 2015 08:45
Last Modified:10 Dec 2018 14:58

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