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Light-enhanced Charge Density Wave Coherence in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6+x</sub>

ORAL

Abstract

We report ultrafast resonant soft x-ray scattering results tracking the transient evolution of charge density wave correlations in the high temperature superconductor YBa2Cu3O6+x. Ultrashort infrared pulses produce a non-thermal quench of the superconducting state, while X-ray pulses detect the reaction of charge density waves. We observe a picosecond response, characterized by a large enhancement of spatial coherence of charge density waves, nearly doubling their correlation length, and a smaller increase of their amplitude. This ultrafast snapshot directly reveals the interaction between these quantum states on their natural timescales. It demonstrates that their competition manifests inhomogeneously, as disruption of spatial coherence, indicating the role of superconductivity in stabilizing topological defects within charge density waves domains.

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Presenters

  • Giacomo Coslovich

    SLAC - Natl Accelerator Lab

Authors

  • Scott Wandel

    SLAC - Natl Accelerator Lab

  • Fabio Boschini

    Institut National de la Recherche Scientifique, University of British Columbia

  • Eduardo H Da Silva Neto

    Department of Physics, University of California, Davis, Yale University

  • Joshua Turner

    SLAC - Natl Accelerator Lab

  • Lingjia Shen

    SLAC - Natl Accelerator Lab

  • MengXing Na

    Department of Physics and Astronomy, University of British Columbia

  • Sioan Zohar

    SLAC - Natl Accelerator Lab

  • Jake D Koralek

    SLAC National Lab, SLAC - Natl Accelerator Lab

  • Ruixing Liang

    Quantum Matter Institute, University of British Columbia, University of British Columbia, Department of Physics and Astronomy, University of British Columbia

  • Doug Bonn

    Department of Physics and Astronomy, University of British Columbia

  • Walter N Hardy

    University of British Columbia, Department of Physics and Astronomy, University of British Columbia

  • Andrea Damascelli

    Quantum Matter Institute, University of British Columbia, Department of Physics and Astronomy, University of British Columbia

  • Giacomo Coslovich

    SLAC - Natl Accelerator Lab