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Observation of a three-dimensional quasi-long-range electronic supermodulation in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures

Author

Listed:
  • Junfeng He

    (Boston College)

  • Padraic Shafer

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • Thomas R. Mion

    (Boston College)

  • Vu Thanh Tra

    (Institute of Physics, National Chiao Tung University)

  • Qing He

    (Durham University)

  • J. Kong

    (Boston College)

  • Y.-D. Chuang

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • W. L. Yang

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • M. J. Graf

    (Boston College)

  • J.-Y. Lin

    (Advanced Light Source, Lawrence Berkeley National Laboratory
    Institute of Physics, National Chiao Tung University)

  • Y.-H. Chu

    (Institute of Physics
    National Chiao Tung University)

  • E. Arenholz

    (Advanced Light Source, Lawrence Berkeley National Laboratory)

  • Rui-Hua He

    (Boston College)

Abstract

Recent developments in high-temperature superconductivity highlight a generic tendency of the cuprates to develop competing electronic (charge) supermodulations. While coupled with the lattice and showing different characteristics in different materials, these supermodulations themselves are generally conceived to be quasi-two-dimensional, residing mainly in individual CuO2 planes, and poorly correlated along the c axis. Here we observed with resonant elastic X-ray scattering a distinct type of electronic supermodulation in YBa2Cu3O7−x (YBCO) thin films grown epitaxially on La0.7Ca0.3MnO3 (LCMO). This supermodulation has a periodicity nearly commensurate with four lattice constants in-plane, eight out of plane, with long correlation lengths in three dimensions. It sets in far above the superconducting transition temperature and competes with superconductivity below this temperature for electronic states predominantly in the CuO2 plane. Our finding sheds light on the nature of charge ordering in cuprates as well as a reported long-range proximity effect between superconductivity and ferromagnetism in YBCO/LCMO heterostructures.

Suggested Citation

  • Junfeng He & Padraic Shafer & Thomas R. Mion & Vu Thanh Tra & Qing He & J. Kong & Y.-D. Chuang & W. L. Yang & M. J. Graf & J.-Y. Lin & Y.-H. Chu & E. Arenholz & Rui-Hua He, 2016. "Observation of a three-dimensional quasi-long-range electronic supermodulation in YBa2Cu3O7−x/La0.7Ca0.3MnO3 heterostructures," Nature Communications, Nature, vol. 7(1), pages 1-8, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10852
    DOI: 10.1038/ncomms10852
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