A systematic transport and thermodynamic study of metallic states in single-crystal iridates

ORAL

Abstract

It is widely recognized that a combined effect of strong spin-orbit and on-site Coulomb interactions generally causes an insulating ground state in most iridates. The Jeff = ½ Mott state first observed in Sr2IrO4 is a unique, intriguing consequence of such an effect and has been extensively studied in recent years. This work, as an extension of our research on iridates, focuses on metallic states in iridates that either naturally occur (e.g., in Bi2Ir2O7, SrIrO3, etc.), or are induced via chemical substitution (e.g., in La doped Sr2IrO4, Sr doped BaIrO3, etc.). We emphasize transport and thermodynamic properties of metallic states for a wide range of temperature from 50 mK to 1000 K as functions of magnetic field and pressure. These properties along with empirical trends in a group of metallic iridates will be summarized and discussed.

*This work was supported by the National Science Foundation via grant DMR-1712101.

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Presenters

  • Yifei Ni

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

Authors

  • Yifei Ni

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

  • Hao Zheng

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

  • 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

  • Wenhai Song

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

  • 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