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Coupling between elementary excitations in CoTiO<sub>3</sub>

ORAL

Abstract

Neutron scattering experiments have revealed Dirac magnon dispersion and spin-orbit excitations in a 3D quantum XY magnet CoTiO3. Here, we investigate unique phonon properties in this material using magneto-Raman spectroscopy. The coupling between spin-orbit excitations and phonons endows large magnetic moments to two Eg phonon modes. We report the evolution of phonon spectra as a function of an external magnetic field, polarization, and temperature in CoTiO3.

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Presenters

  • David Lujan

    University of Texas at Austin

Authors

  • David Lujan

    University of Texas at Austin

  • Jeongheon Choe

    University of Texas at Austin

  • Gaihua Ye

    Texas Tech University

  • Swati Chaudhary

    Northeastern University, University at Texas at Austin, Caltech, The University of Texas at Austin, Northeastern University, Massachusetts Institute of Technology, University of Texas at Austin, The university of Texas at Austin

  • Cynthia Nnokwe

    Texas Tech University

  • Martin A Rodriguez-vega

    Theoretical Division, Los Alamos National Laboratory, University of Texas at Austin, University of Texas at Austin, Northeastern University

  • Jiaming He

    University of Texas at Austin

  • Frank Y Gao

    University of Texas at Austin

  • Timothy N Nunley

    University of Texas at Austin

  • Jianshi Zhou

    University of Texas at Austin, The University of Texas at Austin, University of Texas

  • Gregory A Fiete

    Northeastern University, Northeastern University, Massachusetts Institute of Technology

  • Rui He

    Texas Tech University

  • Xiaoqin Elaine Li

    University of Texas at Austin