Wavelength dependent coherent phonon spectroscopy of Ca<sub>2</sub>RuO<sub>4</sub>

ORAL

Abstract

Ca2RuO4 is a multi-band Mott insulator featuring complex magnetic and orbital ordered states as a function of temperature. We conducted wavelength- and temperature-dependent time-resolved optical reflectivity measurements on Ca2RuO4 to study how optically excited coherent phonons interact with these ordered states. I will also present a microscopic model we developed to understand the dynamics of the coupled lattice and electronic order parameters.

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Presenters

  • Honglie Ning

    • Caltech

Authors

  • Honglie Ning

    • Caltech

  • Omar Mehio

    • Caltech

  • Xinwei Li

    • California Institute of Technology
    • Caltech

  • Michael Buchhold

    • University of Cologne

  • Bing Hu

    • University of Colorado, Boulder

  • Gang Cao

    • University of Colorado, Boulder
    • University of Colorado Boulder

  • David Hsieh

    • Caltech