Time-Resolved Optical Study Of The Ferroelectric Metal LiOsO<sub>3</sub>

ORAL

Abstract

Recently, an inversion symmetry breaking metal-to-metal phase transition (Tc = 140K) was shown to exist in the strongly correlated spin-orbit coupled metal LiOsO3, potentially realizing the long sought after ferroelectric metal first proposed by Anderson and Blount over a half century ago. However, the microscopic origin of the ferroelectric-like distortion below Tc remains unclear. In this work, ultrafast optical pump-probe spectroscopy experiments are utilized to address this question. We �find the fast carrier dynamics to display obvious signatures of the transition, with differing temperature dependence above and below Tc. A two-temperature model is developed to extract the electron-phonon coupling constant of LiOsO3, which is found to be larger than previously thought. Our results provide critical insight into the dynamics of this uncommon phase transition.

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Presenters

  • Nicholas Laurita

    • Department of Physics and Astronomy, Johns Hopkins Unversity
    • Johns Hopkins Univ
    • Johns Hopkins University
    • Institute For Quantum Information and Matter, California Institute of Technology

Authors

  • Nicholas Laurita

    • Department of Physics and Astronomy, Johns Hopkins Unversity
    • Johns Hopkins Univ
    • Johns Hopkins University
    • Institute For Quantum Information and Matter, California Institute of Technology

  • Alon Ron

    • Institute For Quantum Information and Matter, California Institute of Technology

  • Youguo Shi

    • Insititute of Physics, Chinese Academy of Scienes (CAS)
    • Chinese Academy of Sciences
    • Chinese Academy of Scienes (CAS)
    • Institute of Physics,Chinese Academy of Scienes (CAS)
    • Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    • Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences

  • David Hsieh

    • Institute for Quantum Information and Matter, Caltech
    • Department of Physics, California Institute of Technology
    • California Institute of Technology
    • Institute For Quantum Information and Matter, California Institute of Technology