High Pressure Study on the Multiferroic State in Mn$_{1-x}$Co$_x$WO$_4$: x = 0.135 and x = 0.15

ORAL

Abstract

Mn$_{1-x}$Co$_x$WO$_4$ has an interesting and complex phase diagram where 2 multiferroic phases coexist at x = 0.15. For x $<$ 0.15 a spiral spin structure forms, while in contrast a conical spin is observed for x $>$ 0.15. High pressure polarization measurements on x = 0.135 observed a polarization flop and an increase in the polarization, indicating the a-c spiral is converted to the conical spin. An enhancement of the polarization by $\sim$ 400\% is seen for x = 0.15, at the highest pressure measured. High pressure neutron measurements found supporting results.

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Authors

  • Melissa Gooch

    • Texas Center for Superconductivity at the University of Houston

  • Narayan Poudel

    • Texas Center for Superconductivity at the University of Houston

  • Bernd Lorenz

    • Texas Center for Superconductivity and Department of Physics, University of Houston
    • Texas Center for Superconductivity at the University of Houston

  • K.C. Liang

    • Texas Center for Superconductivity at the University of Houston

  • Y.Q. Wang

    • Texas Center for Superconductivity at the University of Houston

  • Y.Y. Sun

    • Texas Center for Superconductivity at the University of Houston

  • Jinchen Wang

    • Oak Ridge National Laboratory

  • Feng Ye

    • Oak Ridge National Laboratory

  • Jaime Fernandez-Baca

    • Oak Ridge National Laboratory and Department of Physics and Astronomy at The University of Tennessee

  • Ching-Wu Chu

    • Texas Center for Superconductivity at the University of Houston and Lawrence Berkeley National Laboratory