RIXS excitations of polar magnet Fe<sub>2</sub>Mo<sub>3</sub>O<sub>8</sub>

ORAL

Abstract

Cross control of magnetization (electric polarization) by an external electric (magnetic) field, i.e. magnetoelectric (ME) effect, is a key in designing novel multiferroic devices. The polar magnet Fe2Mo3O8 has been demonstrated to be a promising multiferroic material recently. The ME coupling is not only strong but also compositionally tunable. Upon Zn doping higher than 12.5 %, the antiferromagnetic ground state becomes ferrimagnetic state accompanying a change in ME coefficient. To study the electronic structure of (Fe1-xZnx)2Mo3O8, we carried out comprehensive measurements including Hard X-ray photoemission, soft x-ray absorption and resonant inelastic X-ray scattering. Our results disentangle the electronic properties of octahedral and tetrahedral Fe2+and provide spectroscopic evidence that the doped Zn favors to replace tetrahedral Fe in the doped compound. We observed peculair temperature and polarization dependences of low-energy RIXS excitations across the phase transition of Fe2Mo3O8.

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Presenters

  • Hsiao-Yu Huang

    • National Synchrotron Radiation Research Center

Authors

  • Hsiao-Yu Huang

    • National Synchrotron Radiation Research Center

  • Amol Singh

    • Condensed Matter Physics, National Synchrotron Radiation Research Center
    • National Synchrotron Radiation Research Center

  • Abhishek Nag

    • Diamond Light Source

  • Kejin Zhou

    • Diamond Light Source

  • Andrew Walters

    • Diamond Light Source

  • Mirian Garcia-Fernandez

    • Diamond Light Source

  • Jun Okamoto

    • National Synchrotron Radiation Research Center

  • Ashish Chainani

    • Condensed Matter Physics, National Synchrotron Radiation Research Center
    • National Synchrotron Radiation Research Center

  • Yu-Miin Sheu

    • Department of Electrophysics, National Chiao Tung University

  • Takashi Kurumaji

    • Physics, MIT
    • Department of Applied Physics, University of Tokyo

  • Yoshinori Tokura

    • RIKEN Center for Emergent Matter Science (CEMS)
    • RIKEN Center for Emergent Matter Science
    • RIKEN CEMS
    • RIKEN Center for Emergent Matter Science (CEMS), Wako, Japan
    • Center for Emergent Matter Science (CEMS), RIKEN
    • Department of Applied Physics and Quantum-Phase Electronics Center, University of Tokyo
    • University of Tokyo
    • University of Tokyo and RIKEN CEMS
    • CEMS, RIKEN
    • Center for Emergent Matter Science, RIKEN
    • Department of Applied Physics, University of Tokyo
    • University of Tokyo and RIKEN-CEMS

  • Chien-Te Chen

    • National Synchrotron Radiation Research Center

  • Di-Jing Huang

    • Condensed Matter Physics, National Synchrotron Radiation Research Center
    • National Synchrotron Radiation Research Center