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Charge density wave memory in a cuprate superconductor

Author

Listed:
  • X. M. Chen

    (Brookhaven National Laboratory
    Lawrence Berkeley National Laboratory)

  • C. Mazzoli

    (Brookhaven National Laboratory)

  • Y. Cao

    (Brookhaven National Laboratory)

  • V. Thampy

    (Brookhaven National Laboratory
    SLAC National Accelerator Laboratory)

  • A. M. Barbour

    (Brookhaven National Laboratory)

  • W. Hu

    (Brookhaven National Laboratory)

  • M. Lu

    (Brookhaven National Laboratory)

  • T. A. Assefa

    (Brookhaven National Laboratory)

  • H. Miao

    (Brookhaven National Laboratory)

  • G. Fabbris

    (Brookhaven National Laboratory)

  • G. D. Gu

    (Brookhaven National Laboratory)

  • J. M. Tranquada

    (Brookhaven National Laboratory)

  • M. P. M. Dean

    (Brookhaven National Laboratory)

  • S. B. Wilkins

    (Brookhaven National Laboratory)

  • I. K. Robinson

    (Brookhaven National Laboratory
    University College)

Abstract

Although CDW correlations are a ubiquitous feature of the superconducting cuprates, their disparate properties suggest a crucial role for pinning the CDW to the lattice. Here, we report coherent resonant X-ray speckle correlation analysis, which directly determines the reproducibility of CDW domain patterns in La1.875Ba0.125CuO4 (LBCO 1/8) with thermal cycling. While CDW order is only observed below 54 K, where a structural phase transition creates inequivalent Cu-O bonds, we discover remarkably reproducible CDW domain memory upon repeated cycling to far higher temperatures. That memory is only lost on cycling to 240(3) K, which recovers the four-fold symmetry of the CuO2 planes. We infer that the structural features that develop below 240 K determine the CDW pinning landscape below 54 K. This opens a view into the complex coupling between charge and lattice degrees of freedom in superconducting cuprates.

Suggested Citation

  • X. M. Chen & C. Mazzoli & Y. Cao & V. Thampy & A. M. Barbour & W. Hu & M. Lu & T. A. Assefa & H. Miao & G. Fabbris & G. D. Gu & J. M. Tranquada & M. P. M. Dean & S. B. Wilkins & I. K. Robinson, 2019. "Charge density wave memory in a cuprate superconductor," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09433-1
    DOI: 10.1038/s41467-019-09433-1
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