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