Pairing and Self-Organization of Vortices and Antivortices in h-YMnO$_{3}$

ORAL

Abstract

Fascinating vortices and antivortices with ferroelectric domains were discovered in multiferroic hexagonal YMnO$_{3}$ [1]. Interlocking of ferroelectric and structural antiphase domain walls of h-YMnO$_{3}$ is one of the important ingredients for the topologically-nontrivial domain pattern formation. We have recently investigated the large-scale configuration of vortices and antivortices in h-YMnO$_{3}$ using selective chemical etching. Our results indicate the importance of pairing of vortices and antivortices, and provide valuable insights into understanding the self-organization mechanism of a zoo of vortices and antivortices. Furthermore, we have studied the response of the vortices and antivortices configuration to external stimuli such as external electric fields. \\[4pt] [1] T. Choi et al., Nature Mater. \textbf{9}, 253 (2010).

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Authors

  • S.C. Chae

    • Rutgers Center for Emergent Materials
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA

  • Yoichi Horibe

    • Rutgers Center for Emergent Materials and Department of Physics \& Astronomy, Rutgers University
    • Rutgers Center for Emergent Materials
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA
    • Rutgers University

  • D.Y. Jeong

    • Department of Mathematics, Soongsil University, Seoul 156-743, Korea

  • S. Rodan

    • Rutgers Center for Emergent Materials
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA

  • Nara Lee

    • Rutgers Center for Emergent Materials
    • Rutgers University
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA

  • S.W. Cheong

    • Rutgers University
    • Rutgers Center for Emergent Materials
    • Rutgers University, USA
    • Rutgers Univ. Physics Dept.
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA