Thermal Hall Effect in Collinear Antiferromagnets on a Square Lattice

ORAL

Abstract

We show that the thermal Hall effect is possible in collinear antiferromagnets on a squre lattice once the magnon-phonon interaction due to the Dzyaloshinskii-Moriya interaction (DMI) is taken into account. We discuss the field- and DMI-dependence of the thermal Hall coefficient. We show that the thermal Hall conductivity is controlled by the resonant contribution from the anticrossing points between the magnon and phonon branches, and estimate its size in real materials.

*Work at CMU is supported by DE-SC0019443 and DE-SC0012509.
The research by S.O. is supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

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Presenters

  • Nishchay Suri

    • Physics, Carnegie Mellon University
    • Carnegie Mellon Univ

Authors

  • Nishchay Suri

    • Physics, Carnegie Mellon University
    • Carnegie Mellon Univ

  • Yinhan Zhang

    • Carnegie Mellon Univ

  • Satoshi Okamoto

    • Oak Ridge National Lab
    • Materials Science and Technology Division, Oak Ridge National Laboratory
    • University of Tennessee, Knoxville
    • Oak Ridge National Laboratory

  • Di Xiao

    • Physics, Carnegie Mellon University
    • Carnegie Mellon University
    • Carnegie Mellon Univ
    • Department of Physics, Carnegie Mellon University