Linear magnetoresistance in the all-in-all-out antiferromagnet Cd<sub>2</sub>Os<sub>2</sub>O<sub>7</sub>

ORAL

Abstract

The pyrochlore Cd2Os2O7 undergoes a metal-insulator transition at 227 K, concomitant with a formation of all-in-all-out magnetic ordering. Here, we explore the magnetoresistance associated with this magnetic order, which manifests an odd-parity linear functional form. This form, recently reported in the related compounds Eu2Ir2O7, is allowed by the Onsager relationship for antiferromagnetic materials; however the microscopic origin is still unclear. By systematically studying a range of galvanomagnetic measurement configurations, we are able offer potential mechanisms for understanding this linear magnetoresistance involving transport both in the bulk and along the magnetic domain walls.

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Presenters

  • Yishu Wang

    • Johns Hopkins University
    • Caltech, Physics, Math & Astronomy
    • The Johns Hopkins University

Authors

  • Yishu Wang

    • Johns Hopkins University
    • Caltech, Physics, Math & Astronomy
    • The Johns Hopkins University

  • Yejun Feng

    • Okinawa Institute of Science and Technology
    • Okinawa Institute of Science and Technology Graduate University

  • Felipe Gomez

    • California Institute of Technology

  • Daniel Silevitch

    • Caltech
    • Caltech, Physics, Math & Astronomy
    • California Institute of Technology

  • Jiaqiang Yan

    • Oak Ridge National Laboratory (USA)
    • Materials Science and Technology Division, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory
    • Materials Science and Technology, Materials Science and Technology
    • Oak Ridge National Lab
    • Materials Science and Engineering, The University of Tennessee

  • David George Mandrus

    • Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
    • University of Tennessee-Knoxville
    • Oak Ridge National Lab
    • Department of Materials Science and Engineering, University of Tennessee
    • University of Tennessee (Knoxville, USA)
    • Department of Materials Science and Engineering, University of Tennessee Knoxville
    • Department of Material Science & Engineering, University of Tennessee
    • Material Science and Engineering, University of Tennessee
    • Materials Science and Technology, Materials Science and Technology
    • University of Tennessee, Knoxville
    • Department of Materials Science and Engineering, The University of Tennessee
    • Materials Science and Engineering, The University of Tennessee
    • Oak Ridge National Laboratory
    • Department of Material Science and Engineering, University of Tennessee

  • Patrick Lee

    • Massachusetts Institute of Technology
    • Physics, Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology

  • Thomas F Rosenbaum

    • Caltech
    • Caltech, Physics, Math & Astronomy
    • California Institute of Technology