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Oxygen isotope effects on the superconducting transition and magnetic states within the phase Ddagram of Y1-xPrxBa2Cu3O7-delta


Khasanov, R; Shengelaya, A; Di Castro, D; Morenzoni, E; Maisuradze, A; Savic, I M; Conder, K; Pomjakushina, E; Bussmann-Holder, A; Keller, H (2008). Oxygen isotope effects on the superconducting transition and magnetic states within the phase Ddagram of Y1-xPrxBa2Cu3O7-delta. Physical Review Letters, 101(7):077001.

Abstract

The various phases observed in all cuprate superconductors [superconducting (SC), spin-glass (SG), and antiferromagnetic (AFM)] were investigated with respect to oxygen-isotope (16O/18O) effects, using here as a prototype system of cuprates Y1-xPrxBa2Cu3O7-delta. All phases exhibit an isotope effect which is strongest where the respective phase terminates. In addition, the isotope effects on the magnetic phases (SG and AFM) are sign reversed as compared to the one on the superconducting phase. In the coexistence regime of the SG and SC phase a two-component behavior is observed where the isotope induced decrease of the superfluid density leads to a corresponding enhancement in the SG related density.

The various phases observed in all cuprate superconductors [superconducting (SC), spin-glass (SG), and antiferromagnetic (AFM)] were investigated with respect to oxygen-isotope (16O/18O) effects, using here as a prototype system of cuprates Y1-xPrxBa2Cu3O7-delta. All phases exhibit an isotope effect which is strongest where the respective phase terminates. In addition, the isotope effects on the magnetic phases (SG and AFM) are sign reversed as compared to the one on the superconducting phase. In the coexistence regime of the SG and SC phase a two-component behavior is observed where the isotope induced decrease of the superfluid density leads to a corresponding enhancement in the SG related density.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2008
Deposited On:17 Feb 2009 15:57
Last Modified:05 Apr 2016 13:00
Publisher:American Physical Society
ISSN:0031-9007
Publisher DOI:10.1103/PhysRevLett.101.077001
Related URLs:http://arxiv.org/abs/0711.2257
Permanent URL: http://doi.org/10.5167/uzh-13715

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