Atomic and Electronic Structure Changes Underlying Votex Polarization Domains in Hexagonal RMnO3

ORAL

Abstract

Hexagonal phase RMnO3 systems exhibit polarization domains with complex vortex patterns with density depending on the cooling rate from the high-temperature paraelectric phase. Detailed polarization mapping is compared with spatially dependent structural and spectroscopic measurements to relate variations in the domain patterns with local atomic and electronic structure. Structural measurements reveal variations on the length scale of the changes in polarization. The hard x-ray measurements were complemented by soft x-ray and low energy electron microscopy measurements to probe surface potential variations.

*This work is supported by NSF Grant No. DMR-1809931.

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Presenters

  • Trevor Tyson

    • New Jersey Inst of Tech

Authors

  • Trevor Tyson

    • New Jersey Inst of Tech

  • Sizhan Liu

    • New Jersey Inst of Tech

  • Jerzy T. Sadowski

    • Center for Functional Nanomaterials, Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973
    • CFN, Brookhaven National Laboratory

  • Matthew Newville

    • University of Chicago

  • Antonio Lanzirotti

    • University of Chicago

  • Sang-Wook Cheong

    • Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University-New Brunswick
    • Rutgers Center for Emergent Materials, Rutgers University
    • Rutgers, The State University of New Jersey
    • Rutgers University
    • Department of Physics and Astronomy, Rutgers University
    • Center for Quantum Materials Synthesis, Rutgers University
    • Center for Emergent Materials and Department of Physics and Astronomy, Rutgers