X-Ray-Diffraction Study of Charge-Density-Waves and Oxygen-Ordering in YBa2Cu3O6+x Superconductor

Zahirul Islam; S. K. Sinha; D. Haskel; J. Lang; G. Srajer; D. R. Haeffner; B. W. Veal; H. A. Mook

doi:10.1103/PhysRevB.66.092501

X-Ray-Diffraction Study of Charge-Density-Waves and Oxygen-Ordering in YBa2Cu3O6+x Superconductor

Superconductivity 2013-05-29 v1

Authors: Zahirul Islam , S. K. Sinha , D. Haskel , J. Lang , G. Srajer , D. R. Haeffner , B. W. Veal , H. A. Mook

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Abstract

We report a temperature-dependent increase below 300 K of diffuse superlattice peaks corresponding to q_0 =(~2/5,0,0) in an under-doped YBa_2Cu_3O_6+x superconductor (x~0.63). These peaks reveal strong c-axis correlations involving the CuO_2 bilayers, show a non-uniform increase below \~220 K with a plateau for ~100-160 K, and appear to saturate in the superconducting phase. We interpret this unconventional T-dependence of the ``oxygen-ordering'' peaks as a manifestation of a charge density wave in the CuO_2 planes coupled to the oxygen-vacancy ordering.

Keywords

X-ray diffraction charge density wave oxygen ordering YBa2Cu3O6+x superconductor superlattice peak

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@article{arxiv.cond-mat/0110390,
  title  = {X-Ray-Diffraction Study of Charge-Density-Waves and Oxygen-Ordering in YBa2Cu3O6+x Superconductor},
  author = {Zahirul Islam and S. K. Sinha and D. Haskel and J. Lang and G. Srajer and D. R. Haeffner and B. W. Veal and H. A. Mook},
  journal= {arXiv preprint arXiv:cond-mat/0110390},
  year   = {2013}
}

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4 pages, 4 figures

X-Ray-Diffraction Study of Charge-Density-Waves and Oxygen-Ordering in YBa2Cu3O6+x Superconductor

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