Zero-field μSR study of YBa2Cu3O6+x, x ≥ 0.67: Evidence for charge ordering

J. E. Sonier, J. H. Brewer, R. F. Kiefl, R. Miller, R. H. Heffner, K. F. Poon, G. D. Morris, W. N. Hardy, R. Liang, D. A. Bonn, J. S. Gardner, C. E. Stronach

Research output: Contribution to journalArticlepeer-review

Abstract

Zero-field (ZF) μSR measurements were performed on single crystals of the high temperature superconductor YBa2Cu3O6+x, for x ≥ 0.67. Contrary to early ZF-μSR studies, we find that the muon-spin relaxation function evolves significantly as a function of temperature and oxygen content. The relaxation rate of the ZF-μSR time spectra exhibits a local minimum near 55 K and a subsequent increase with decreasing temperature. These features weaken considerably with decreasing x. A comparison to the results of nuclear quadrupole resonance experiments on highly doped samples suggests that these observations are associated with the build up of long-range charge correlations and not spontaneous orbital moments as suggested by Sonier et al. (Science 292 (2001) 1692).

Original languageEnglish
Pages (from-to)312-315
Number of pages4
JournalPhysica B: Physics of Condensed Matter
Volume326
Issue number1-4
DOIs
StatePublished - Feb 2003
Externally publishedYes

Funding

This work was supported in part by NSERC, the Canadian Institute for Advanced Research and the US DOE.

FundersFunder number
U.S. Department of Energy
Canadian Institute for Advanced Research
Natural Sciences and Engineering Research Council of Canada

    Keywords

    • Charge ordering
    • High-temperature superconductors
    • Zero-field μSR

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