Large, non-saturating magnetoresistivity and magnetic anisotropy in the iridate BaIrO3

ORAL

Abstract

The hexagonal BaIrO3 is an antiferromagnetic (AFM) insulator with a charge gap of 0.1 eV. It undergoes a sharp magnetic transition at 182 K with an order magnetic moment smaller than 0.1 Bohr magneton. This compound is known for decades, but its physical properties are largely unexplored. Results of our recent study of this system reveal an unusually large, non-saturating magnetoresistivity up to 36 Tesla and a strong magnetic anisotropy. In addition, a close examination of structural properties of this material, along with results of early studies, confirms the existence of a charge density wave (CDW) that may co-exist with the AFM state. We present and discuss structural, transport, magnetic, and thermal properties of this and other related compounds as functions of temperature, magnetic field, and pressure.

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Presenters

  • Hengdi Zhao

    Department of Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado, University of Colorado at Boulder

Authors

  • Hengdi Zhao

    Department of Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado, University of Colorado at Boulder

  • Jasminka Terzic

    Univ of Kentucky, National High Magnetic Field Laboratory, Department of Physics, Univ of Colorado - Boulder, University of Colorado at Boulder

  • Hao Zheng

    Department of Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado, University of Colorado at Boulder

  • David Graf

    NHMFL Tallahassee, NHMFL, National High Magnetic Field Lab, National High Magnetic Field Laboratory, National High Magnetic Field Laboratory/Florida State University, Natl High Magnetic Field Lab, NHMFL at Florida State University, Florida State University, National High Magnetic Field Laboratory, Florida State University, Condensed Matter Science, NHMFL

  • Wenhai Song

    Institute of Solid State Physics, Chinese Academy of Science, Department of Physics, Univ of Colorado - Boulder

  • Yifei Ni

    Department of Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado

  • Yu Zhang

    Department of Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado

  • Gang Cao

    Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado-Boulder, Department of Physics, University of Colorado Boulder, Materials Science and Engineering Program, University of Colorado Boulder, Department of Physics, Univ of Colorado - Boulder, Department of Physics, University of Colorado, University of Colorado at Boulder